APS User News-at-a-Glance
Issue 13; March 19, 2002




Message from Murray Gibson: APS Colloquium Returns

Research Highlight: X-rays Image Shock Waves from Fuel Spray

Applications Available for the Fourth National Neutron and X-ray Scattering School

User Activity Report Call

User Badge and Training Information

APSUO Corner: Check the Employment Bulletin Board


Operations Update


(Contact: smithj@purdue.edu )

On March 18, Murray Gibson, Associate Laboratory Director for the APS, and Janet Smith, GM/CA-CAT Director, jointly signed a Memorandum of Understanding (MOU) with the Director of Argonne National Laboratory Director, Hermann Grunder; the Director of the National Institute of General Medical Sciences, Marvin Cassman; and the Director of the National Cancer Institute, Andrew C. von Eschenbach serving as witnesses. This agreement marks the official beginning of GM/CA-CAT's tenure in sector 23 of the APS for the development of three beamlines (two insertion device and one bending magnet) optimized for protein crystallography. GM/CA-CAT (which stands for Institute for General Medical Sciences/National Cancer Institute Collaborative Access Team) is funded entirely by the two institutes of the National Institutes of Health and will provide a portion of its beam time to investigations that advance core programs of both institutes, with the balance of the time made available to the general structural biology user community by means of peer-reviewed proposals.

The scientific and technical goals of the CAT emphasize streamlined, efficient throughput for a variety of sample types, sizes, and qualities, representing the cutting edge of structural biology research.

At present, the APS has signed MOUs with 19 CATs, representing a total of 26 sectors, each sector consisting of one or more insertion-device beamlines and one bending-magnet beamline. Two more CATs are expected to sign MOUs soon.

For further information about GM/CA-CAT, contact Robert Fischetti, GM/CA-CAT Project Manager (rfischetti@anl.gov).

Message from Murray Gibson: APS Colloquium Returns
(contact: jmgibson@aps.anl.gov )

I want to personally invite all APS users, staff, and visitors to attend the monthly APS Colloquium lecture. This series began its 2002 season on March 6 with Dr. David Clarke from the University of California, Santa Barbara, who discussed opportunities for high-energy x-rays in the study of coatings.

The APS Colloquia will provide a number of opportunities for you to learn about leading- edge studies in various disciplines, discuss research opportunities with the visiting lecturers and other colleagues, and identify potential research initiatives involving the APS. As in previous years, the Colloquium lectures will be held on the first Wednesday of every month, but the time has been changed to 3:00 p.m. to better accommodate research schedules. (And, of course, refreshments will be served before the lecture.) Our April speaker will be Wei-Jen Tang of the Ben May Institute for Cancer Research, Department of Neurobiology, Pharmacology, and Physiology, The University of Chicago, who will discuss the road to finding an antidote against anthrax infection. Following in May will be Nobel laureate J. Robert Schrieffer of the National High Magnetic Field Laboratory, Florida State University, Tallahassee, who will talk about strange quantum numbers in condensed matter physics.

The success and value of this Colloquium series depend on your support and input. APS staff and resident users have been asked to schedule meetings and seminars around the Colloquia, and the Colloquia organizers welcome both suggestions for speakers and comments about the Colloquia. This year's Colloquia organizers are Katherine Harkay (630/252-9758; harkay@aps.anl.gov) and Jin Wang (630/252-9125 wangj@aps.anl.gov).

When planning trips to the APS, especially if you plan to be here on a first Wednesday, check the website below to learn who will be speaking:


Research Highlight: X-rays Image Shock Waves from Fuel Spray
(Contact: wangj@aps.anl.gov )

High-pressure, high-speed fuel sprays are a critical technology for many applications, including fuel-injection systems, where the structure and dynamics of the fuel sprays are the keys to increasing fuel efficiency and reducing pollutants. At SRI-CAT, sector 1 at the APS, and at the Cornell High Energy Synchrotron Source, synchrotron x-radiography and a fast x-ray detector were used to record the time evolution of transient fuel sprays from a high-pressure injector, capturing the propagation of spray-induced shock waves in a gaseous medium and revealing the complex nature of the spray hydrodynamics. Further information about this work can be found at the following Web site:


Other APS research highlights are located at the following Web site:



Applications Available for the Fourth National Neutron and X-ray Scattering School
(Contact: nxschool@dep.anl.gov )

Applications are now being accepted for the Fourth National Neutron and X-ray Scattering School, which is being held at Argonne National Laboratory on August 11-25, 2002. The primary focus of this school is the education of graduate students from U.S. universities on the use of major neutron and x-ray facilities. The curriculum consists of tutorial lectures on the principles of scattering theory, the characteristics of neutron and synchrotron x-ray sources, and the application of scattering methods to condensed matter research. Hands-on experiments at both the Intense Pulsed Neutron Source (IPNS) and the APS provide students with practical experience. Topics from many disciplines including materials science, condensed matter physics, chemistry, biology, and geology are included in both the experiments and lectures.

This year's Scientific Directors are Dean Haeffner of the APS and Raymond Osborn of IPNS. Other members of the Local Organizing Committee include Harold Myron, Educational Director; Ray Teller, IPNS; George Crabtree, ANL Materials Science Division, and Dennis Mills, APS. Carol Reynolds serves as the Conference Secretary.

The application deadline is April 26, 2002. Further information and an electronic application can be found at the following Web site:



User Activity Report Call
(Contact: fenner@aps.anl.gov )

Reminder: Call for 2001 APS User Activity Reports. The Advanced Photon Source Activity Report 2001 (ANL-02/06) will contain reports of work conducted at the APS from January 2001 through December 2001. The submission deadline for these reports is April 22, 2002. Complete instructions can be found on the Web at


PLEASE NOTE: There is a new anonymous FTP drop-off site for this year's reports: epics.aps.anl.gov/uar01

Questions? Please contact Rick Fenner (fenner@aps.anl.gov).

We look forward to receiving your reports and learning more about your research.


User Badge and Training Information
(Contact: strasser@aps.anl.gov)

APS users are reminded that their Cardkey photo user badges will be automatically deactivated if their safety training has not been renewed. Users are required to repeat APS User Orientation every five years and General Employee Radiation Training (GERT) every two years. If you have questions about the your status on either course, you can view your personal training history at the following Web site:


To access your history, you'll need to enter your user badge number and the password used for all APS Web applications. (If you have never obtained a password, enter your user badge number as your password; you will then be prompted to change it.)

But hold on to your user badge; it will be reactivated as a Cardkey for access to the experiment hall as soon as you complete the required training.


APSUO Corner: Check the Employment Bulletin Board
(Contact: carlson@aps.anl.gov)

As a service to APS users, the APS Users Organization sponsors an employment bulletin board where prospective employers can post job opportunities related to synchrotron radiation research. Prospective employees can also submit resumes, which are kept on file and distributed to prospective employers upon request. Currently, 23 employment opportunities are listed, most of them sited at the APS. For further information, go to the Web site listed below (also accessible from the APS User Information Web Page under General Information:


Another link to this Web page is located on the APS Home Page under the Employment Opportunities button, which also contains a link to Argonne National Laboratory job postings.


Operations Update
(Contact: avr@aps.anl.gov)

We are currently half way through the second of three runs for fiscal year 2002. The current run is the longest scheduled to date in the operating history of the APS, lasting nearly 14 weeks. After a shaky start, the last four weeks of operation have averaged over 98% with a mean time between faults of over 33 hours. For the run thus far, the availability is averaging 96.8%. Except for the first week, all of the other weeks have been operated with top-up. The average delivered current to the users has been 98.1 mA.

A significant amount of both maintenance time and machine studies time is dedicated to continued improvements in the areas of beam position monitors (bpms) and beam stability. At the present time, all of the vertical x-ray bpms in the bending magnet lines have been added into the vertical orbit control algorithms, and work continues on implementing the ID beamline x-ray bpms into the feedback loop. The continued improvements have permitted implementation of an increased response in the real-time orbit feedback system. The correction rate was increased from 0.4 Hz to 1.5 Hz, significantly reducing the small, but measurable, orbit transients caused by ID gap changes.

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