cc.rtf11 MOUs; 14 Sectors Now Assigned

To date, 14 sectors on the APS experiment hall floor have been assigned to Collaborative Access Teams (CATs) that have signed Memorandums of Understanding (MOUs) with the APS. An MOU can be signed after a CAT has received approval of its scientific proposal and conceptual design, obtained the necessary funding commitments, and developed an appropriate management plan. At the time of MOU signing, the APS assigns sector locations on the experiment hall floor. (On each sector, radiation can be extracted from an insertion-device and a bending-magnet source.)

The first MOU was signed in December of 1993 with DND-CAT (E. I. Du Pont de Nemours & Co.-Northwestern University-The Dow Chemical Company CAT), which has been assigned to Sector 5. The second, with SBC-CAT (Structural Biology Center CAT), was signed in March of 1994. SBC-CAT will be located on Sector 19. The third and fourth MOU-signing ceremonies (between the APS and two of the Illinois-based CATs) took place in Springfield, Illinois, at the State Capitol Building on April 27, 1994. In those ceremonies, UNI-CAT (University-National Laboratory-Industry CAT) and CARS-CAT (Consortium for Advanced Radiation Sources CAT) signed a total of three MOUs, with CARS-CAT signing separate MOUs for its BioCARS and GeoCARS sectors. UNI-CAT will occupy Sector 6, BioCARS will have Sector 13, and GeoCARS will have Sector 14.

The SRI-CAT (Synchrotron Radiation Instrumentation CAT) was the fifth group to come on board, with a ceremony on April 29, 1994. Dennis Mills, Director of SRI-CAT, was joined on this occasion by Dick Deslattes (NIST) and Ralph Simmons (Univ. of Illinois at Urbana-Champaign), two of the scientific members of SRI-CAT, who discussed the profound impact of SRI-CAT beamlines on their research. SRI-CAT will occupy Sectors 1, 2, and 3.

IMM-CAT's (IBM-MIT-McGill University CAT) MOU came next, with a May 19 ceremony on Sector 8 of the experiment hall floor. The Director of IMM-CAT, Brian Stephenson of IBM, was joined at the podium by Trey Smith (Director of Physical Sciences, IBM Research Division), Robert Birgeneau (Dean, School of Science, MIT), and Mark Sutton (Acting Director, Centre for the Physics of Materials, McGill), as well as by Simon Mochrie (MIT), who became the new Director of IMM-CAT on June 1, 1994.

Howard University, Washington, D.C., was the location of the eighth MOU signing. MHATT-CAT (Center for Real-Time X-Ray Studies CAT) combined the signing of their MOU with a "ribbon-cutting" ceremony for their new assembly facility in Beltsville, MD, presided over by Walter Lowe, Director of MHATT-CAT. Hazel O'Leary, U. S. Secretary of Energy, was an honored guest at the proceedings and spoke eloquently of the importance to the Department of Energy of the APS and its potential for leading-edge research and university-industry-national laboratory collaborations. MHATT-CAT will be located on Sector 7.

BESSRC-CAT (Basic Energy Sciences Synchrotron Radiation Center CAT) became the next CAT to sign, with a July 6 ceremony on Sector 11 of the APS experiment hall floor. (BESSRC-CAT will occupy Sectors 11 and 12.) Joining Pedro Montano, Director of BESSRC-CAT, in discussing the scientific potential for research on BESSRC-CAT beamlines was Clyde Kimball from Northern Illinois University and James Norris from the Chemistry Division at Argonne.

The tenth MOU was signed on September 16 between IMCA-CAT (Industrial Macromolecular Crystallography Association CAT) and the APS. Speaking on behalf of the 12 pharmaceutical companies that make up IMCA, Keith Watenpaugh, Chairman of the IMCA Board of Supervisors, recognized the considerable debt owed to Noel Jones (formerly with Eli Lilly, now Vice President for Research at Molecular Structures), who was the driving force behind the unprecedented formation of a consortium of competing industrial companies to build a common research facility. IMCA-CAT will occupy Sector 17.

Halloween Day, October 31, was the day for the 14th MOU signing, this one between the Complex Materials Consortium CAT and the APS. Argonne Director Alan Schriesheim recognized U. S. Congressman Harris Fawell; Manager of the DOE Chicago Operations Office Cherri Langenfeld; and Associate Director for the APS David Moncton; each of whom commented on the "treat" of the occasion. After recognizing the influence of Exxon employees (both former and current) on the development and progress of the APS, Moncton then introduced CMC-CAT Director Sunil Sinha from Exxon, who recognized Alfredo M. Lopez, Vice President for Corporate Research, Exxon Research and Engineering Co.; L. Doon Gibbs, Leader of the X-ray Scattering Group, Physics Department, Brookhaven National Laboratory; Michael Klein, Director of the Laboratory for Research on the Structure of Matter, University of Pennsylvania; and E. Ward Plummer, Distinguished Professor of Physics at the University of Tennessee and Oak Ridge National Laboratory; each of whom spoke on behalf of one of the CMC-CAT consortium members. Following the signing ceremony, CAT members, APS employees, and guests enjoyed a Halloween treat of cake and coffee.

Two more CATs have completed the requirements for MOU signing, with ceremonies now being planned.


This APS plan view shows sector assignments for those CATs that have signed MOUs.


Cutting a cake to feed guests at the CARS- and UNI-CAT MOU signings are (from left) Arthur M. Sussman, Vice President for Administration and Argonne National Laboratory, The University of Chicago; John E. LaTourette, President, Northern Illinois University; Keith Moffat, Executive Director, CARS-CAT; Haydn Chen, Director, UNI-CAT; David E. Moncton, Associate Laboratory Director for the APS; Alan Schriesheim, Director, Argonne National Laboratory; Lee Daniels, Illinois House Minority Leader; John C. Guyon, President, Southern Illinois University at Carbondale; and Clyde W. Kimball, Chairman, CARS Board of Governors.


BESSRC-CAT obtained "title" to Sectors 11 and 12 following the signing ceremony shown in the photo. Participants were (from left) Pedro A. Montano, Director BESSRC-CAT; David E. Moncton, Associate Laboratory Director for the APS; John E. LaTourette, President, Northern Illinois University; Frank Y. Fradin, Associate Laboratory Director for Physical Research, Argonne National Laboratory; and Alan Schriesheim, Director, Argonne National Laboratory.


Signing an MOU between the APS and IMM-CAT were (from left) Mark Sutton, Acting Director, Centre for the Physics of Materials, McGill University; Alan Schriesheim, Director, Argonne National Laboratory; David Moncton, Associate Laboratory Director for the APS; IMM-CAT Deputy Director Simon Mochrie, Massachusetts Institute of Technology; G. Brian Stephenson, Director, IMM-CAT; Trey Smith, Director of Physical Sciences, IBM Research Division; and Robert Birgeneau, Dean of the School of Science, Massachusetts Institute of Technology.


From left, Joyce A. Ladner (Acting President of Howard University), Walter Lowe (Director of MHATT-CAT), Alan Schriesheim (Director of Argonne), Hazel O'Leary (U.S. Secretary of Energy), and David Moncton (Associate Laboratory Director for the APS) smile following the signing of MHATT-CAT's MOU.


Keith Watenpaugh, Chairman of the IMCA Board of Supervisors, and David Moncton, Associate Laboratory Director for the APS (both seated), are all smiles following the IMCA MOU-signing ceremony. Looking on (standing from left) are Edwin Westbrook, Noel Jones, Darsh Wasan, Alan Schriesheim, and Arthur Sussman.


Cutting the celebration cake for the CMC-CAT MOU signing are (from left) Alan Schriesheim, Sunil Sinha, L. Doon Gibbs, E. Ward Plummer, Michael Klein, Arthur Baddorf, and David Moncton


Dennis Mills, Director of the Synchrotron Radiation Instrumentation CAT, beams as David Moncton, Associate Laboratory Director for the APS, watches Argonne Laboratory Director Alan Schriesheim finally sign the MOU between SRI-CAT and the APS (following a postponement caused by a late-winter snowstorm).

CAT Communicator is intended to provide timely information to Advanced Photon Source Collaborative Access Team members and associates.

Editor: Susan H. Barr

Layout and Design: Linda Carlson

Telephone: (708) 252-5981

Fax: (708) 252-9250


The Advanced Photon Source at Argonne National Laboratory is supported by the U. S. Department of Energy, BES-Materials Science under contract W-31-109-Eng-38

Construction Progress

The focus of conventional construction activities has now shifted from the completed technical buildings (the linac/PAR building, the booster synchrotron, the rf extraction building, the control center, the utility building, the storage ring enclosure, and the experiment hall) to support areas such as the lab/office modules (LOMs) for users, the central lab/office building (CLO) for APS staff, and the user residence facility (URF).

Ground has been broken for all six of the LOMs to be constructed as part of the first phase of the APS project (see related story on p. 16), with completion of the first LOM (Bldg. 432) expected by late December of this year. Work on the CLO (Bldg. 401) is progressing well. This building, which will house the majority of APS staff members as well as user support facilities (such as the user office, library, training area, lounge, stockroom, and seminar rooms), will be connected to the multifunction building (Bldg. 402), which includes a 500-person lecture hall and related conference facilities. Both buildings are scheduled for completion by the fall of 1995. Construction of the URF (see related story on p. 7) should begin later this year.

The focus of technical construction in the accelerator area has moved from manufacturing and installation to checkout and commissioning. All accelerator vacuum chambers and magnets have now been produced, and installation is now complete-with the last storage-ring girder officially placed on September 27. Commissioning of all accelerators except the storage ring is in progress now, with the first acceleration of an electron beam from 400 MeV to 1 GeV in the booster synchrotron occurring on August 23, 1994, at 8:05 p.m. Commissioning of the storage ring is scheduled to begin in January of 1995.

The emphasis in beamline construction and support activities is gradually shifting from R&D to procurement and prototype installation. A mock-up of an insertion-device front end was constructed in the Building 362 high bay area to enable technicians to develop expertise in the installation of this equipment prior to its actual assembly and installation in the storage-ring tunnel. Current plans call for 10 bending-magnet front ends and at least two insertion-device front ends to be in place prior to the start of storage-ring commissioning in January of 1995. The first undulator (see related story on p. 17) has been delivered and tested. The remaining four undulators (of the five originally ordered) should be delivered by December; an option to purchase an additional eight undulators was recently exercised. A contract for procurement of wiggler A was awarded on August 8, 1994, to STI Optronics. Arrival of the first wiggler is planned for mid-June of 1995. The first Kohzu-Seiki monochromator, which will be used on one of SRI-CAT's Sector 1 beamlines, has arrived and has been extensively tested. A number of avenues for realizing high-heat-load monochromators are also being actively pursued by the Experimental Facilities Division Optics Group. Among these are both liquid-gallium and liquid-nitrogen cooling and the use of inclined, pin-post cooled, and diamond crystals. Various methods of bonding crystals are also under investigation.

The clean rooms for the fabrication and characterization of beamline optics, located directly under the Visitor Gallery on Sector 1 of the experiment hall floor, have now been completed. Equipment for these laboratories is being delivered and installed, with official operation of the metrology laboratory scheduled to begin very shortly. The deposition facility should be completed during the first quarter of calendar year 1995.


This September 20, 1994, aerial view of the APS shows the completed technical buildings, construction in progress on the LOMs and the CLO, and the site for the URF, where ground-breaking ceremonies will be held later in the fall.


The Accelerator Systems Division Vacuum Science and Technology Group is shown assembled proudly behind the 235th (and final) completed APS storage-ring vacuum chamber.


As the APS nears the end of conventional construction, the site is beginning to look more like this artist's rendering.

Illinois State Seal Placed in Cornerstone of URF

Illinois Governor Jim Edgar visited the APS on October 12, 1994, to place a circular bronze Illinois State Seal on the cornerstone of the APS User Residence Facility (URF). Witnessing this event were Directors of 12 APS CATs, a number of state and local officials, APS staff members, and other Argonne employees. In addition, Governor Edgar presented a $17.4M check to Associate Laboratory Director David Moncton to pay for construction of the URF. The State of Illinois has provided a total of $18.9M for the facility. Of this amount, $1.5M was awarded in FY 1994 for design work.

At present, the APS is completing the bidding process, with an award expected soon for facility construction, which is projected to take about 18-20 months. The official opening of the facility is planned for the summer of 1996.

The design consists of single rooms and "quad" units, with each quad encompassing four sleeping rooms, a communal sitting area, shared bathroom facilities, and a small kitchenette. The facility has been planned to accommodate anticipated user needs. Rooms will be available on either a daily or long-term basis.

The ground floor will contain a lobby, reception desk, dining and kitchen areas, a lounge and sundry area, a laundry room, general offices, a meeting room, and mechanical rooms. The remaining floors consist of single rooms, quads, halls, and public interaction areas. The facility will be equipped with electronic data links for 24-hour monitoring of experiments taking place on the APS experimental hall floor.


An artist's rendering shows how the final building will look.


Governor Edgar and David Moncton officially set the Illinois State seal in the URF cornerstone.

Overflow Crowd Attends Sixth Users Meeting

A crowd of more than 550 (in multiple locations) attended the opening session of the Sixth Users Meeting for the Advanced Photon Source on Wednesday, May 25, 1994. Users in the filled-to-capacity auditorium were joined by those who viewed Moncton's APS progress report on monitors located in several other Argonne buildings or, by means of M-BONE teleconferencing, on their own computers in eight other DOE national laboratories, three other government labs, and 14 universities in the U.S., as well as in 10 foreign countries.

After opening comments by Roy Clarke (Univ. of Michigan), APS Users Organization (APSUO) Chair, and a welcome from Argonne National Laboratory Director Alan Schriesheim, Moncton summarized progress on the project in conventional construction and technical areas, stressing that the APS is under budget and essentially on schedule. His concluding time-lapse video of project construction (whose final frame read "to be completed") was followed by rousing applause.

Jens Als-Nielsen (Risø National Laboratory, Denmark) spoke of his experience during a year's sabbatical at the European Synchrotron Radiation Facility. In his talk, entitled "The possible simplicity of undulator beam research," he encouraged APS users to prepare in earnest for the extraordinary scientific opportunities rapidly approaching. Ronald Pindak (AT&T Bell Laboratories) followed with a discussion of disorder in materials studied by means of coherent x-ray scattering, providing an overview for one of the three workshops scheduled for the next day. Kenneth Finkelstein (CHESS, Cornell University) laid the foundation for another of the workshops by discussing x-ray science with polarized radiation.

During the lunch break, participants enjoyed submarine sandwiches; vendor exhibits; visits to the Building 362 high bay to see front-end and insertion-device (ID) vacuum chamber prototypes and the undulator magnetic measurement facility; and a number of technical demos, among them the operation of a liquid-gallium-cooled, inclined-crystal monochromator and an experimental physics and industrial control system (EPICS) demo.

The afternoon session began with another overview talk, this one by Stephen Hoffman (Northwestern University) entitled "X-ray microbeams: Creation methods and experimental applications." He was followed by Robert Sweet (Biology Department, Brook-haven National Laboratory) who asked "Are we MAD? Can anomalous diffraction solve the phase problem." The meeting venue then shifted to the APS site, where participants chose among a number of options, including a graduate student/postdoctoral poster session; a self-guided tour; exhibits; and demos of the APS Design Exchange, the World Wide Web, a graphical user interface for spectral calculations, and the APS control system. These events were followed by a wine and cheese reception on the APS experiment hall floor.

Following an evening at Comiskey Park for a baseball game (accompanied by a "Taste of Chicago" buffet during a convenient rain delay), meeting participants gathered again the next morning at Argonne to address technical issues. Gopal Shenoy (Director, Experimental Facilities Division [XFD], APS) began the session by describing the installation and commissioning plans for insertion devices, front ends, and beamlines. APS plans call for storage-ring commissioning to begin in January of 1995, with beam for those CATs that are ready to receive it possibly by the summer of 1995. He then outlined the steps CATs need to take to be ready and encouraged CATs to submit Preliminary Design Reports as soon as possible. He concluded with a comment that to complete 32 beamlines (16 sectors) by February or March of 1996, the APS and CATs will be following a tight time table. He stressed that APS staff will set aside time for beamline reviews and must accomplish these tasks as well as their installation and commissioning activities. He also cautioned the CATs to be aware of potentially long lead times for procurement of some critical components.

Efim Gluskin (Insertion Devices Group Leader, XFD) then described performance enhancements to the APS undulator A. Dennis Mills (Optics Group Leader, XFD) discussed first-optics-monochromator performance and mentioned other current high-heat-load optics R&D. Richard Parry (XFD) provided a user's perspective of the APS beamline personnel safety system, looking at such issues as safety requirements, transparent operation, control, and features. Deming Shu (Deputy Group Leader, Engineering and Construction Group, XFD) then assembled a beamline on a 12-foot-high screen working from an IBM PC logged into the APS Design Exchange (DX) and described the new "tool box" feature on the DX. Wenbing Yun (Insertion Devices Group, XFD) explained the benefits of using mirrors as first optics at the APS, and Susan Barr (APS User Program Administrator) concluded the meeting by describing the process for user registration (see related story on p. 12).

Following announcement of the newly elected APS Users Organization Steering Committee members and concluding remarks by Alan Goldman, incoming Chair of the APSUO, participants disbursed to three afternoon workshops: Coherent X-ray Scattering, organized by Steven Dierker; Microfocusing Technology and Applications, organized by Don Bilderback; and CAT Optics, organized by Gene Ice.

Proceedings of the Sixth Users Meeting and the three workshops will be sent to participants shortly.


Participants in the self-guided tour examine an assembled girder in the APS storage ring.


Roger Dejus from the APS Experimental Facilities Division demonstrates a graphical user interface for spectral calculations during the Sixth Users Meeting for the APS.


Participants study posters, exhibits, and an APS sector model on the APS experiment hall floor.

APSUO Elects Steering Committee Members

Seven new members were elected to the APS Users Organization (APSUO) Steering Committee at a business meeting held on May 16, 1994, as part of the Sixth Users Meeting for the APS. The APSUO Steering Committee, which meets quarterly, functions on behalf of all APS users and conducts the business of the APSUO. Joining incoming Chair Alan Goldman (Ames Laboratory/Iowa State University) and continuing Committee members Michael Bedzyk (Argonne National Laboratory and Northwestern Univ.), George S. Brown (Univ. of California, Santa Cruz), Kevin L. D'Amico (X-Ray Analytics), Mark L. Rivers (The University of Chicago), Ian K. Robinson (Univ. of Illinois at Urbana-Champaign), and Roy Clarke (Univ. of Michigan) are the following persons:

Steven E. Ealick, Professor of Biochemistry, Cornell University and Director, MacCHESS (Macromolecular Crystallography at CHESS)

Richard Harlow, Senior Research Associate, E. I. DuPont de Nemours & Co.

Gabrielle Long, Group Leader, Materials Microstructural Characterization Group, National Institute of Standards and Technology

Ronald Pindak, Distinguished Member of the Technical Staff, AT&T Bell Laboratories

John Quintana, Staff Scientist, DND-CAT Synchrotron Research Center and Project Manager, DND-CAT Sector Development

Larry Sorensen, Professor of Physics, University of Washington

D. Mark Sutton, Associate Professor of Physics, McGill University

At the July 18, 1994, meeting of the Steering Committee, Mark Sutton was elected Vice-Chair. He will work with the APS in planning the joint meeting of SRI'95 and the Seventh Users Meeting for the APS (tentatively scheduled for the week of October 16-20, 1995).

In Memory: Paul Cowan (1950-1994)

Paul Lloyd Cowan, member of BESSRC-CAT and leader of the synchrotron-radiation-based atomic physics program at Argonne, passed away on August 16, 1994, after a year-long battle with cancer. His technical advice and contributions to current beamline designs, however, will have significant impacts on the level of research that will take place at the APS. Among his contributions to the field of synchrotron radiation studies were early efforts to develop and instrument X24A, a soft-x-ray beamline at the National Synchrotron Light Source; early beamline design work for BESSRC-CAT beamlines at the APS; the design of the Cowan-Golovchenko boomerang design crystal spectrometer; the realization of the back-reflection standing wave method; the extension of the analysis of threshold phenomena in the x-ray region to include resonant inelastic scattering; and key contributions in the discovery and elucidation of polarization spectroscopy in the x-ray region.


Paul Cowan

Experimental Station Ordered; Design Available

A prototype monochromatic-beam experimental enclosure has been ordered from Tecknit Shielding Systems of Passaic, New Jersey. The enclosure, which is a general-purpose enclosure for experiments with monochromatic insertion-device radiation, will be constructed on SRI-CAT's Sector 1 insertion-device beamline.

The enclosure is 4-m wide x 7-m long x 3.35-m high. The interior clearance of 3 m is limited by a 500-kg manual hoist. The construction is modular, with standard self-supporting 1-m-wide steel/lead/steel sandwich panels. The thickness of lead is 10 mm for the side and upstream walls, 12.5 mm for the downstream wall, and 6 mm for the roof.

The enclosure has two sets of sliding doors, with each set having two 1-m-wide doors. One door will be pneumatically operated and used for routine entry into the station. The other doors will be manually operated and only used for installation of large equipment. Details of the enclosure design can be found on the APS Design Exchange in the General Library (drawing numbers H12100-0 to H12100-9).

The enclosure is now being constructed on the experiment hall floor and should be ready for occupancy by mid-November.

The preceding was abstracted with permission from an article by Dean Haeffner in the August 1994 issue of the SRI CAT Newsletter.


Experimental Station

Argonne Plans High-Speed Computer Network

Argonne will soon be linked to The University of Chicago and Fermilab through a new high-speed computer network. Every on-site computer connected to Argonne's network will be linked to the other three facilities and can access the new high-speed network. Known as the Chicago Research and Education Network (CREN), the system will transmit videos and data at a rate of 34 megabits per second, an increase over the current network that transmits 1.5 megabits of data per second.

Fiber optics and high-speed switches will enable new network applications such as video conferencing, medical imaging, and high-performance computing. "CREN will eventually connect with other advanced research and education institutions throughout the region and around the world," reports Joel Mambretti, Director of The University of Chicago's Office of Strategic Technologies and CREN Acting Director.

APS CATs will be able to access CREN through computers in the APS experiment hall, lab/office modules, or user residence facility.

Some of the preceding information was originally published in Argonne Week and has been used with permission.

User Registration

As CATs move into the final phases of beamline design and begin construction planning, the need for user access to the APS site has grown. Those who are not Argonne employees will need to obtain two badges: one for Argonne site access and the other for the APS. To begin this process, either obtain a registration form and APS User Guide (ANL/APS/TB-15) from Linda Carlson in the APS User Office or download both from the APS Home Page on the Argonne National Laboratory server on the World Wide Web. (The registration form also appears on the facing page.) Complete the registration form and return it to the User Office as far in advance as possible of your desired arrival date at Argonne so that the necessary permission for Laboratory access can be obtained. This is especially important for non-U.S. citizens because it may take as long as eight weeks for the necessary approval. As soon as your form has been received and the necessary approval has been obtained, the User Office will notify you, schedule orientation, and arrange for Argonne and APS site access badges to be prepared. When you arrive at Argonne, stop at the Argonne Visitor Reception Center. Your photograph will be taken there, and an Argonne access badge will be issued. From there, come to the APS User Office (temporarily located in Building 362, Room A365) to complete a brief orientation course. You will then be able to obtain your APS site access badge.

Those who are already Argonne employees and have Argonne badges can now be granted APS site access by registering with the APS User Office, reading the APS User Guide, and completing a brief orientation course. Obtain a registration form and guide from the User Office, return the completed form, and the User Office will call to schedule your orientation. For further information, please contact Susan Barr.


Registration Form

ID Group Begins Configuration Installation

The Insertion Devices Group of the APS Experimental Facilities Division has begun a "configuration installation" of an insertion-device (ID) vacuum chamber and an undulator A in sector 3 of the APS storage ring. This is the first "mating" of an insertion device with its special vacuum chamber and the first assembly of all of the auxiliary ID components and systems.

The configuration installation was planned to check for interface interferences, develop the installation procedures, and train the installation crew. Initially, the storage ring will be commissioned with standard vacuum chambers (42-mm-aperture) in the straight sections. Pat Den Hartog, the ID Installation Manager, comments, "In the spring, storage ring access time will be very limited, so we want to discover if there are any procedural problems now. We don't want to have any surprises next spring." For the configuration installation, the ID Group is using a 2.5-meter, 12-mm aperture ID vacuum chamber. Later, however, chambers with an 8-mm aperture will be used to optimize the performance of the undulators.

In addition to the equipment being installed inside the tunnel, the ID control system is being installed on the roof of the tunnel. "The ID gap separation and taper will be fully operable from an EPICS workstation," reports Den Hartog.

Contingency Recommitment Benefits Users

The APS recently allocated $10M of Project contingency funds to benefit users. Four more insertion devices and eight more front ends will be provided as part of the construction project, bringing the number of sectors supported behind the shield wall from 16 to 20. Currently, 20 sectors worth of proposals have been approved by the APS Proposal Evaluation Board. Moncton commented that " at this time, the APS is fairly confident of our remaining costs and believes that this decision shows the continuing commitment of the APS to support users." Previously, the APS allocated some contingency funds to complete two additional Lab/Office Modules to support user activities, bringing the total number of LOMs to be constructed now to six. At present, all six are under construction.

Accelerator Commissioning Update:

4-GeV Electrons Generated

As the January 1995 date for commissioning of the APS storage-ring approaches, injector facility commissioning is picking up steam. The linac is now running reliably with electrons, and positron-production studies are being successfully pursued. Operation of the positron accumulator ring (PAR) with electrons, in many different bunch configurations, is now routine. The booster, which initially suffered "birthing pains" associated with the regulation of the large ramping power supplies, is now regularly generating 4- GeV electrons. These electrons were extracted for the first time on October 25, 1994, paving the way for introduction of the first beam into the storage ring enclosure for the two-sector test . Much, however, remains to be done, and the months of November and December promise to be busy for the commissioning team. A week-long shutdown in November will see the replacement and upgrade of several pulsed magnet components in the PAR, which will allow the 60-Hz operation necessary for acceptable positron operation. After commissioning of these components, the changeover and commissioning of the PAR with positrons will occur. Meanwhile, work continues on the booster to achieve the 7-GeV energy necessary for storage-ring commissioning.

Robert Smither: Distinguished Performer

Robert Smither, a Senior Scientist in the Experimental Facilities Division (XFD) of the APS, has received a 1994 University of Chicago Award for Distinguished Performance at Argonne National Laboratory. These awards constitute the highest honor conferred on Argonne employees by the University, which operates Argonne for the U.S. Department of Energy. The award was presented to Smither by the University's President, Hugo Sonnenschein, in a July 28th ceremony.

The award recognized Smither's 38-year record of accomplishments at Argonne (most recently as a member of XFD's Optics Group) in the fields of x-ray and gamma-ray optics, detectors, and supporting technologies. These achievements have included the development of technologies that are critically important for third-generation synchrotron radiation sources such as the APS. Particularly noteworthy was his pioneering work on liquid-metal cooling of first optical elements, including the design of channel-cooled diffraction crystals, contributions to the design of tilted two-crystal monochromators, and the invention of two types of liquid-gallium pumps.

Smither's earlier work on the design and application of a bent-crystal spectrometer and germanium detector greatly advanced the state of the art of gamma-ray analysis. He invented a variable-focal-length crystal diffraction lens for imaging applications and a method for enhancing the brightness of monochromatic x-ray beams from synchrotron sources. His ongoing work on the design, construction, and testing of crystal diffraction lenses with novel geometry is finding applications in treaty verification, in astrophysics research, and at the APS.


Robert Smither

Bedzyk Wins Warren Award

Michael Bedzyk (DND- and BESSRC-CATs) was awarded the 1994 Bertram Eugene Warren Diffraction Physics Award by the American Crystallographic Association at its annual meeting in July. This award was established to recognize an important recent contribution of the physics of solids or liquids using x-ray, neutron, or electron diffraction techniques. Bedzyk developed a technique for using standing waves of x-rays to examine how ions arrange themselves in solution above an electrically charged surface or within a thin-film coating. This work may lead to an improved understanding and design of a wide variety of electrical devices, among them batteries and electromechanical coating systems. Bedzyk's technique may also be used in the chemical and electronics industries.

Bedzyk is currently serving as Chair of the DND-CAT Board of Governors, and is a member of both the APS Users Organization Steering Committee and the Cornell High Energy Synchrotron Source (CHESS) Executive Committee.


Michael Bedzyk

Two-Sector Test in Progress

The APS Accelerator Systems Division is currently conducting a two-sector test of the APS storage ring. In this test, electron beams of various energies (4-7 GeV) are being introduced into the first two sectors of the storage ring downstream of the injection point.

The objectives of the test are first, to verify radiation shielding calculations well in advance of storage-ring commissioning, which is scheduled to begin in January 1995, and second, to check out high-energy transport and storage-ring hardware with beam. Magnets, power supplies, vacuum systems, and hardware and software for diagnostics and controls will be exercised so that their operational characteristics can be better understood.

All magnetic components of the high-energy transport line, including bending magnets, steering correctors, quadrupoles, and the pulsed septum magnets, will be tested. The injector synchrotron extraction bumper and storage-ring injection bumpers will be involved, as will the high-energy transport line diagnostics, 18 storage-ring beam position monitors, three fluorescent screens, and a long ionization-chamber loss monitor overlapping the high-energy transport line.

Of primary interest from the shielding standpoint are measurements to confirm estimates of radiation fields resulting from injected beam losses at the storage-ring injection septum and at the beam dump. Perhaps the most important measurement, however, is a simulation of the maximum credible incident at reduced beam power levels. These measurements will confirm the adequacy of the shielding design for the APS storage ring.

The two-sector test was planned near the end of injector synchrotron commissioning, which is currently being completed.

Lab/Office Modules Take Shape

As shown in the photograph (right), which was taken on September 1, 1994, the first two laboratory/office modules (LOMs) for users are taking shape! Each LOM consists of five pentagons and will house laboratories and offices for four sectors (one pentagon per sector), with a central pentagon containing a card-key-controlled entrance and shared facilities (conference room, staff shop, break room, men's and women's locker rooms), a network closet, and an office for APS support personnel. The office space in each of the four pentagons can be configured in a variety of ways, with the final decision to be made by each CAT in consultation with Steve Davey, APS User Technical Interface Group Leader. An electronics laboratory and a chemical laboratory will also be provided for each sector.

The first LOM to be finished (Building 432) will house DND, UNI, MHATT, and IMM-CATs, all of which have signed Memorandums of Understanding. This building is scheduled to be completed in December of 1994. Building 431, housing SRI-CAT, will be finished next, with completion of the remaining four LOMs planned at approximately one-month intervals.


Building 432, which will house offices and labs for Sectors 5 through 8 is shown in the photograph.

First Undulator Accepted

The first undulator A was shipped from the manufacturer, STI Optronics of Bellevue, Washington, and arrived at the APS on August 9, 1994. It was unloaded, uncrated, and installed in the magnetic measurement room by the end of the day.

The Experimental Facilities Division (XFD) Insertion Devices Group conducted a long list of acceptance tests on the undulator. These tests included physical measurements of the device, testing of the various motions, and extensive measurements of the magnetic field. The APS magnetic field measurements were in agreement with the measurements performed by STI. Formal acceptance of the device took place on August 31, after the results of the exhaustive field-quality measurements were evaluated.

The specifications for the integrals of the magnetic field through the undulator were chosen to ensure that users would be able to change gap during operations. After some magnetic fine tuning of the undulator by XFD staff members, the variation of a first or second integral with gap was reduced to values that are several times smaller than the specification.

Twenty insertion devices will be provided to Collaborative Access Teams as part of the current APS construction project .


Jenny O'Brien (APS Experimental Facilities Division Insertion Devices Group) examines the first undulator A to arrive at the APS.

Reviews in Progress

The pathway of a CAT from submission of its original Letter of Intent to form an APS Collaborative Access Team to receiving the first x-rays in an experimental station is marked by reviews, each designed to provide information to the APS and beneficial feedback to the CAT. Letters of Intent and scientific proposals are reviewed by the APS Proposal Evaluation Board (PEB), chaired by Mike Knotek. At present, 15 CATs have received full scientific approval. Conceptual Design Report (CDR) reviews come next; the CDR Review Committee, chaired by George Brown, assesses functionality of the design for the PEB-approved scientific mission of each CAT. All 15 CATs have also passed through this stage. Management plans are reviewed by an APS Committee, chaired by Liz Stefanski, which examines a variety of management, safety, and reporting issues. Twelve of the 15 CATs have submitted management plans; to date, 11 of the 12 submitted plans have been accepted by the APS.

At present, most CATs are preparing Preliminary Design Reports (PDRs) for review by a committee of APS technical staff members. This committee, chaired by Steve Davey, has received three PDRs (which are expected to represent approximately 30% completion of the beamline designs). The purpose of these design reviews is primarily to assess safety and functionality. Comments have been returned to two of the CATs. Final Design Reports (FDRs) will follow; these reports represent an approximately 90% level of completion of the design effort. Next will come a Construction Readiness Review, followed by a Commissioning Readiness Review when a CAT's beamlines are fully constructed and ready to receive beam.

A Progress Review, conducted by the PEB, is planned for each CAT once a Memorandum of Understanding has been signed. These reviews are designed to provide the PEB with a comprehensive overview of each CAT's progress in scientific, management, and technical areas, as well as to identify any areas of potential concern-from either the CAT or the PEB perspective. The first eight of these reviews took place on November 3-4, 1994.

Argonne Wins Award for APS Metal-Cleaning Process

A process developed to clean metal parts for the APS won the U. S. Department of Energy's first Pollution Prevention Award for Zero Generation. In this new process, developed to remove surface contamination, storage-ring sections and other metal parts are dipped in a bath of alkaline detergent and subjected to high-frequency sound waves. The detergent solution is nonhazardous and can be handled by Argonne's waste water treatment plan. The original process called for dipping the storage-ring sections in 15-foot-long tanks of sodium hydroxide. This procedure would have produced 3,000 gallons of hazardous waste per month and would have cost Argonne approximately $600,000 per year in disposal, training, protective equipment, and compliance costs. The process was developed by John Noonan, James Lang, Robert Ferry, Richard Rosenberg, Mike McDowell, and Dean Wyncott, all of the APS Accelerator Systems Division, who have also received an 8th Annual Pollution Prevention award from the State of Illinois for their efforts.

CAT Calendar

January 19,1995 APSUO Steering Committee Meeting

January 20, 1995 Research Directorate Meeting

April-May 1995 Proposal Evaluation Board Progress Reviews

April 6, 1995 Research Directorate Meeting

April 7, 1995 APSUO Steering Committee Meeting

June 29, 1995 Research Directorate Meeting

June 30, 1995 APSUO Steering Committee Meeting

October 17, 1995 Research Directorate Meeting

October 18, 1995 APSUO Steering Committee Meeting

October 16-20, 1995 Synchrotron Radiation Instrumentation '95 Meeting Argonne National Laboratory

October 16-20, 1995 International Symposium celebrating the 100th anniversary of the discovery of x-rays Argonne National Laboratory

October 16-20, 1995 Seventh Users Meeting for the APS

Documents Sent

The following documents have been sent to each CAT Director. For further information about any of them, please contact your CAT Director or the APS User Program Office.

* Draft Advanced Photon Source, User Policies and Procedures, October 1994 version; sent October 4, 1994

* Argonne National Laboratory, Environment, Safety and Health Manual, Volumes 1 & 2, sent October 19, 1994.

* Draft Advanced Photon Source, User Policies and Procedures, October 1994, Appendixes; sent November 7, 1994

* Vacuum Policy for APS Beamlines and Experimental Stations, October 1994; sent

November 1, 1994.

User Contact Information

Susan H. Barr, User Program Administrator Steven Davey, User Technical Interface

Phone: 630/252-5981 Phone: 630/252-5311

E-mail: E-mail:

Linda Carlson, User Program Secretary Phone: 630/252-5089 E-mail: FAX (for all of the above): 708/252-9250