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Advanced Photon Source
Beamline Controls and Data Acquisition (BCDA)

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APS Status Information Process Variables

The list of key process variables are categorized according to functionality.

Storage Ring Operating Parameters

  • S:DesiredMode
    This Process Variable is set by the operators. This PV gives information about the mode the machine is in and will have the following values and meanings.
    0 State Unknown
    1 USER OPERATIONS
    2 Bm Ln Studies
    3 INJ Studies
    4 ASD Studies
    5 No Beam
    6 MAINTENANCE

  • S:ActualMode
    This Process Variable is derived based on various values. This PV gives the operating mode and has the following meanings.
    0 State Unknown
    1 NO BEAM
    2 Injecting
    3 Stored Beam
    4 Delivered Beam
    5 MAINTENANCE

  • SRFB:GBL:LoopStatusBI
    This Process Variable shows the status of Real Time Closed Orbit Feedback System and has the following meanings.
    0 Off
    1 On

  • SRFB:GBL:VLoopStatusBI
    This Process Variable is for Vertical Plane control of Real Time Closed Orbit Feedback and has the following meanings.
    0 Off
    1 On

  • SRFB:GBL:HLoopStatusBI
    This Process Variable is for Horizontal Plane control of Real Time Closed Orbit Feedback and has the following meanings.
    0 Off
    1 On

  • S:OrbitCorrection:CC
    This Process Variable shows the status of orbit correction and has the following meanings.
    0 No corrections
    1 Correction in Progress

  • S:OrbitControlLawXFineBO
    This Process Variable is for orbit correction in the Horizontal plane and has the following meanings.
    0 No corrections
    1 Correction in Progress

  • S:OrbitControlLawYFineBO
    This Process Variable is for orbit correction in the Vertical plane and has the following meanings.
    0 No corrections
    1 Correction in Progress

  • ACIS:ShutterPermit
    This Process Variable is derived based on various values and has the following meanings.
    0 Shutters Disabled
    1 Shutters Enabled

  • S:FillNumber
    This PV is a unique number for each new fill. The number is reset to zero at the beginning of every run period.

  • XFD:srCurrent
    This PV is the current in milliamps in the storage ring.

  • S:SRtimeCP & S:SRcurrentCP
    These PV's represent the time(relative) vs current history. It's an array of 600 values which gives the storage ring current history for the past 24 hours.

  • S:SRdateCP
    This PV represents the (absolute) time for the current history. It's an array of 600 values which gives the time since epoch (VxWorks) in seconds for the past 24 hours.
    This PV is useful only for the 2.3.x versions of medm.

  • XFD:LifeTimeHrs
    This PV is the lifetime of the stored beam in hours.

  • SRFB:dsp2:xRMSmotion30HzPkM.VAL
    This PV is horizontal beam motion in microns.

  • SRFB:dsp2:yRMSmotion30HzPkM.VAL
    This PV is vertical beam motion in microns.

  • S:VID1:filteredXemittance
    This pv is the measured horizontal emittance from sector 35 bending magnet beamline.

  • S:VID1:filteredYemittance
    This pv is the measured vertical emittance from sector 35 bending magnet beamline.

  • S:VID1:filteredCoupling
    This pv is the measured Coupling from sector 35 bending magnet beamline.

  • XFD:message1
    This PV is a message set by the operator. This line will contain the names of the master control room operators on current shift.

  • XFD:message2
    This PV is a message set by the operator. This line will contain the names of the floor coordinator on current shift.

  • XFD:message3
    This PV is a message set by the operator. This line will have information about the fill pattern.

  • XFD:message4
  • XFD:message14
  • XFD:message15
    These PVs show a message set by the operator. They will contain information about current problems if any.

  • XFD:message5
  • XFD:message15
    These PVs show a message set by the operator. They will have information about last fill dump/Trip reasons, etc.

  • XFD:message6
  • XFD:message17
    These PVs show a message set by the operator. They will have information about new fill schedule.

  • OPS:TimeOfDaySI
    This PV is an automatic time stamp, showing the last time information was entered in the "Next Fill Info." dialog box by the accelerator operators.

  • XFD:message18
    This PV is a message set by the operator. It says when the next update, regarding fill or down time problems, is to occur. It's mostly for long or undefined downtimes.

TopUp Related Information

  • S:TopUpStatus
    When TopUp mode is set bit is set.

  • S:MSLT:longTopOffGateBI
    Injection bit active when injecting.

  • ID:TopUpTimetoInject
    Countdown timer in seconds for next TopUp Injection.

  • S:TopUpCurrent
    Amount of current in mA injected during the last TopUp injection.

  • ID:TopUpWarning
    A warning signal which activates 20 seconds prior to TopUp Injection.

  • S:TopUpTime
    Time of last TopUp injection in string format.

  • S:TopUpInterval
    Interval between TopUp injections in string format.

Storage Ring RF BPM Information

The alarm state of all the RF bpm's should be monitored. In medm it is possible by setting the variables display as an alarm condition. Normally the BPMs are not in alarm. However when the BPM is not in the feedback loop then the alarm is minor which is reflected in medm with yellow color. For non medm cases the .SEVR field can be monitored for the alarm conditions.

  • Sx:BM:SrcPt:xPositionM
    old name : FE:yy:BM:SR:HPOS:CC
    The x represents a sector number between 1-34. This gives the horizontal position in millimeters of the particle beam at the source point for a Bending Magnet beamline.

  • Sx:BM:SrcPt:xAngleM
    old name : FE:yy:BM:SR:HANG:CC
    The x represents a sector number between 1-34. This gives the horizontal angle in microradians of the particle beam at the source point for a Bending Magnet beamline.

  • Sx:BM:SrcPt:yPositionM
    old name : FE:yy:BM:SR:VPOS:CC
    The x represents a sector number between 1-34. This gives the vertical position in millimeters of the particle beam at the source point for a Bending Magnet beamline.

  • Sx:BM:SrcPt:yAngleM
    old name : FE:yy:BM:SR:VANG:CC
    The x represents a sector number between 1-34. This gives the vertical angle in microradians of the particle beam at the source point for a Bending Magnet beamline.

  • Sx:ID:SrcPt:xPositionM
    old name : FE:yy:ID:SR:HPOS:CC
    The x represents a sector number between 1-34. This gives the horizontal position in millimeters of the particle beam at the source point for an Insertion Device beamline.

  • Sx:ID:SrcPt:xAngleM
    old name : FE:yy:ID:SR:HANG:CC
    The x represents a sector number between 1-34. This gives the horizontal angle in microradians of the particle beam at the source point for an Insertion Device beamline.

  • Sx:ID:SrcPt:yPositionM
    old name : FE:yy:ID:SR:VPOS:CC
    The x represents a sector number between 1-34. This gives the vertical position in millimeters of the particle beam at the source point for an Insertion Device beamline.

  • Sx:ID:SrcPt:yAngleM
    old name : FE:yy:ID:SR:VANG:CC
    The x represents a sector number between 1-34. This gives the vertical angle in microradians of the particle beam at the source point for an Insertion Device beamline.

Storage Ring X-ray BPM Information

  • FE:xx:BM:1XBPM:A:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the top blade of the 1st x-ray BPM located at about 10.9 meters for a Bending Magnet beamline.

  • FE:xx:BM:1XBPM:B:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the bottom blade of the 1st x-ray BPM located at about 10.9 meters for a Bending Magnet beamline.

  • FE:xx:BM:2XBPM:A:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the top blade of the 2nd x-ray BPM located at about 18.0 meters for a Bending Magnet beamline.

  • FE:xx:BM:2XBPM:B:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the bottom blade of the 2nd x-ray BPM located at about 18.0 meters for a Bending Magnet beamline.

  • SxxBM:P1:msAve:y:AdjustedCC
    The xx represents a sector number between 1-34. This PV gives the normalized vertical position of the beam in mm at the 1st x-ray BPM located at about 10.9 meters for a Bending Magnet beamline.

  • SxxBM:P2:msAve:y:AdjustedCC
    The xx represents the sector number between 1-34. This PV gives the normalized vertical position of the beam in mm at the 2nd x-ray BPM located at about 18.0 meters for a Bending Magnet beamline.

  • FE:xx:BM:VPOSITION:CC
    The xx represents a sector number between 01-34. This gives the vertical position in millimeters of the x-ray beam at the source point for a Bending Magnet beamline.

  • FE:xx:BM:VANGLE:CC
    The xx represents a sector number between 01-34. This gives the vertical angle in microradians of the x-ray beam at the source point for a Bending Magnet beamline.

  • FE:xx:ID:1XBPM:A:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the top outboard blade of the 1st x-ray BPM located at about 16.3 meters for an Insertion Device beamline.

  • FE:xx:ID:1XBPM:B:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the bottom outboard blade of the 1st x-ray BPM located at about 16.3 meters for an Insertion Device beamline.

  • FE:xx:ID:1XBPM:C:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the top inboard blade of the 1st x-ray BPM located at about 16.3 meters for an Insertion Device beamline.

  • FE:xx:ID:1XBPM:D:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the bottom inboard blade of the 1st x-ray BPM located at about 16.3 meters for an Insertion Device beamline.

  • FE:xx:ID:2XBPM:A:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the top blade of the 1st x-ray BPM located at about 20.0 meters for an Insertion Device beamline.

  • FE:xx:ID:2XBPM:B:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the bottom blade of the 1st x-ray BPM located at about 20.0 meters for an Insertion Device beamline.

  • FE:xx:ID:2XBPM:E:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the outboard blade of the 1st x-ray BPM located at about 20.0 meters for an Insertion Device beamline.

  • FE:xx:ID:2XBPM:F:CC
    The xx represents a sector number between 01-34. This PV gives the raw intensity in microamps of the inboard blade of the 1st x-ray BPM located at about 20.0 meters for an Insertion Device beamline.

  • SxxID:P1:msAve:y:AdjustedCC The xx represents the sector number between 1-34. This PV gives the normalized vertical position of the beam in mm at the 1st x-ray BPM located at about 16.3 meters for an Insertion Device beamline.

  • SxxID:P1:msAve:x:AdjustedCC
    The xx represents the sector number between 1-34. This PV gives the normalized horizontal position of the beam in mm at the 1st x-ray BPM located at about 16.3 meters for an Insertion Device beamline.

  • SxxID:P2:msAve:y:AdjustedCC
    The xx represents the sector number between 1-34. This PV gives the normalized vertical position of the beam in mm at the 2nd x-ray BPM located at about 20.0 meters for an Insertion Device beamline.

  • SxxID:P2:msAve:x:AdjustedCC
    The xx represents the sector number between 1-34. This PV gives the normalized horizontal position of the beam in mm at the 2nd x-ray BPM located at about 20.0 meters for an Insertion Device beamline.

  • FE:xx:ID:VPOSITION:CC
    The xx represents a sector number between 01-34. This gives the vertical position in millimeters of the x-ray beam at the center of the straight section for an Insertion Device beamline.

  • FE:xx:ID:VANGLE:CC
    The xx represents a sector number between 01-34. This gives the vertical angle in microradians of the x-ray beam at the center of the straight section for an Insertion Device beamline.

  • FE:xx:ID:HPOSITION:CC
    The xx represents a sector number between 01-34. This gives the horizontal position in millimeters of the x-ray beam at the center of the straight section for an Insertion Device beamline.

  • FE:xx:ID:HANGLE:CC
    The xx represents a sector number between 01-34. This gives the horizontal angle in microradians of the x-ray beam at the center of the straight section for an Insertion Device beamline.

ID Information

Front End Shutter Status

  • FE:xx:YY:FEshutter
    Front end Shutter Status. The xx represents a sector number between 01-35 and the YY is BM or ID. The values are
    0 Shutter Closed
    1 Shutter Open

Liquid Nitrogen Distribution System Information

The liquid nitrogen system is directly controlled by PLC. It is also possible to bypass the plc and control the valves directly. In order to have remote access the control of the valves have to be set in Auto mode. The EPICS interface to the LNDS is through the PLC. We strongly urge the CATs to use the epics method of controlling the valves.
Please do not use the switches in the control cabinets to open/close the valves.

  • LN:SxxValveStatus
    Beamline liquid nitrogen flow valve status. The xx represents a sector number between 01-35. The values are
    0 Unknown
    0 Unknown
    1 Closed
    2 Opened
    3 Switch Flt
    4 Unknown
    5 Closed
    6 Opened
    7 Switch Flt

  • LN:z:DewarLevel
    Liquid nitrogen dewar level in inches of water. The z represents the module dewar between A-D.

  • LN:z:DewarPressure
    Liquid nitrogen dewar pressure in PSI. The z represents the module dewar between A-D.

  • LN:z:ValveStatus
    Liquid nitrogen dewar main valve status. The z represents the module dewar between A-D. The values are
    0 Unknown
    1 Closed
    2 Opened
    3 Switch Flt
    4 Unknown
    5 Closed
    6 Opened
    7 Switch Flt

  • LN:zz:ValveStatus
    Liquid nitrogen dewar interconnect valve status. The zz is one of AB, BC or CD The values are
    0 Unknown
    1 Closed
    2 Opened
    3 Switch Flt
    4 Unknown
    5 Closed
    6 Opened
    7 Switch Flt

  • LN:z:Tempx
    Temperature of the liquid nitrogen transfer lines in degrees Celsius. The z represents the zone dewar between A-D and x in Tempx above is between 1-3.

  • LN:SxxValveCtl
    Control of Beamline liquid nitrogen flow valve. The xx represents a sector number between 01-35. Control of this valve is only possible when the system is in User Mode. The values are
    0 Close
    1 Open

  • LN:AccessControl
    Status of control of the Liquid Nitrogen Distribution System. When in User mode, users have control of their beamline flow valves. When in System Manager mode control of valves is only possible by system managers. The values are
    0 User
    1 System Manager
    2 No Control

General

  • APS:BarometricPressure:PSI
    Barometric pressure in PSI (at the Sector 20 Storage Ring mezzanine)

  • APS:BarometricPressure:MBR
    Barometric pressure in millibars (at the Sector 20 Storage Ring mezzanine)

  • APS:BarometricPressure:MMHG
    Barometric pressure in mm of mercury (at the Sector 20 Storage Ring mezzanine)

APS Status Screens - Sample Medm screen images

Sample screen can be viewed by clicking on the links below.

APS Status Screens - Medm source files

APS beamline control developers can access APS operation status MEDM adl files, and all other SR status screens,
by accessing their sector's dserv filesystem at /APSshare/adlsys. An active APS storage ring level status screen
is available by running /APSshare/adlsys/xfd-display.

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JPS, 12 Feb 2014
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