Jefferson Lab Hall C Logbook for December 06 - Beam

  • Main INDEX

    Friday

    

    Thursday
    

    

    Wednesday
    

  • 129994 12/20/06 22:41  smithg         Beam: warmed up

  • 129964 12/20/06 14:28  suleiman       Beam: Ignore this entry. The schedule is as before (Laser on Day Jan 2nd, and beam on Swing Jan 3rd).

  • 129953 12/20/06 10:55  suleiman       Beam: The Pockels Cell Alignment is now Scheduled for Swing Shift Wednesday 1/3/07

    • 

    Tuesday
    

  • 129891 12/19/06 14:35  M Jones        Beam: Beam Energy measurement

  • 129882 12/19/06 11:23  suleiman       Beam: Parity Controls Screen

  • 129874 12/19/06 10:08  suleiman       Beam: Change Hall A IA Slope to -1025 ppm/V

    • 

    Monday
    

  • 129807 12/18/06 16:40  suleiman       Beam: The Hall C Charge Asymmetry width depends on Hall A Current

  • 129795 12/18/06 15:21  suleiman       Beam: Hall C BPMs Widths from run 32983

  • 129794 12/18/06 15:20  suleiman       Beam: G0 Cavity Signals from run 32983

  • 129793 12/18/06 15:19  suleiman       Beam: Charge Asymmetry and Position Differences fron run 32983 - IN, RHWP=7000 -

  • 129792 12/18/06 15:18  suleiman       Beam: Coil Modulation Cycle from run 32982

  • 129790 12/18/06 14:29  suleiman       Beam: Pockels Cell Alignment and Injector Work in January -- Update

  • 129787 12/18/06 13:29  suleiman       Beam: The new Hall A IA Slope is -500 ppm/V

  • 129786 12/18/06 13:25  suleiman       Beam: Changing Lambda/4 angle for Hall A IA system

  • 129753 12/18/06 00:51  franklin       Beam: IOC se 20 rebooted

    • 

    Sunday
    

  • 129742 12/17/06 23:22  Papavassilio   Beam: Funny position caught in snapshot

  • 129686 12/17/06 07:16  Franklin       Beam: Beam not stable in x

    • 

    Saturday
    

  • 129597 12/16/06 00:46  Franklin       Beam: Beam back

  • 129595 12/16/06 00:39  Franklin       Beam: Beam off

    • 

    Friday
    

  • 129573 12/15/06 18:49  jmammei        Beam: position monitor calibrations for new DB

  • 129570 12/15/06 17:59  jschaub        Beam: Restarted Beam Feedback and Realtime Analyzers

  • 129568 12/15/06 17:15  jmammei        Beam: position monitor calibration for run 32881

  • 129555 12/15/06 13:30  suleiman       Beam: G0 Cavity Signals from run 32908

  • 129554 12/15/06 13:29  suleiman       Beam: Hall C BPMs Widths from run 32908

  • 129553 12/15/06 13:28  suleiman       Beam: Charge Asymmetry and Position Differences from run 32908 - OUT -

  • 129547 12/15/06 11:40  suleiman       Beam: Looking at the wire G0XM - the current scan should give the right pedestal but the beam off gives a different one

  • 129527 12/15/06 02:48  jroche         Beam: width of hc parameters

    • 

    Thursday
    

  • 129481 12/14/06 23:37  jschaub        Beam: New Slope for Hall A Charge Feedback

  • 129475 12/14/06 21:54  jschaub        Beam: Asymmetries Large Again

  • 129470 12/14/06 20:42  jmammei        Beam: BPM/BCM calibration complete

  • 129468 12/14/06 19:50  suleiman       Beam: The signal coming to us was saturated - the actual width is 240 ppm.

  • 129467 12/14/06 19:35  suleiman       Beam: Changed Hall A BCM signal to 3XBCM2

  • 129466 12/14/06 18:23  jmammei        Beam: BPM/BCM calib

  • 129459 12/14/06 16:36  jmammei        Beam: non-invasive test by MCC finished

  • 129454 12/14/06 16:05  suleiman       Beam: Hall A Charge Asymmetry width is only 20 ppm at 85 uA

  • 129449 12/14/06 15:34  suleiman       Beam: Coil Modulation Cycle from run 32877 - After increasing coils amplitudes.

  • 129445 12/14/06 15:27  jmammei        Beam: BPM calibration with gains "off"

  • 129441 12/14/06 13:47  suleiman       Beam: New method to find the BPMs' Pedestals

  • 129437 12/14/06 13:35  suleiman       Beam: The Gain Control Screen with Gains OFF selected

  • 129436 12/14/06 13:30  suleiman       Beam: Hall C BPM IOC in Auto-gain at 20 uA and gain OFF at 10 uA

  • 129416 12/14/06 10:50  suleiman       Beam: Doubled the amplitude of Coils: 2,3,4,5,6 to increase the beam motion during the Coil Modulation Cycle

  • 129388 12/14/06 04:31  jroche         Beam: RHWP: from 6000 to 5000

  • 129386 12/14/06 04:06  jroche         Beam: parity quality (rhwp setting 6000): no so good

  • 129385 12/14/06 03:27  jroche         Beam: Hall A is off so is the charge asymmetry width in hall C

    • 

    Wednesday
    

  • 129364 12/13/06 22:25  jmammei        Beam: beam will be down for another 30 min.

  • 129363 12/13/06 22:15  jmammei        Beam: RF zone dropout

  • 129337 12/13/06 18:51  jmammei        Beam: HV trip

  • 129336 12/13/06 18:36  jmammei        Beam: G0 and G0B "unresolved"

  • 129332 12/13/06 17:25  jmammei        Beam: parity quality

  • 129328 12/13/06 17:08  jschaub/sule   Beam: I give up!

  • 129326 12/13/06 17:06  jschaub/sule   Beam: &%@!ing File Formats!

  • 129325 12/13/06 17:03  jschaub/sule   Beam: Injector Optimization--Better Better Format

  • 129324 12/13/06 17:01  jschaub/sule   Beam: Injector Optimization--Better Format

  • 129323 12/13/06 17:00  jschaub/sule   Beam: Injector Optimization

  • 129322 12/13/06 17:00  jmammei        Beam: parity quality

  • 129313 12/13/06 15:15  suleiman       Beam: Charge Asymmetry and Position Differences from run 32849 - (IN, RHWP=120, IA=5.0)

  • 129311 12/13/06 14:15  horn           Beam: new RHWP settings

  • 129300 12/13/06 11:02  suleiman/jsc   Beam: IOCSE 11 and 19 back in auto gain, iocse11 has different IF gains now

  • 129294 12/13/06 10:15  suleiman/jsc   Beam: Helicity controls

  • 129293 12/13/06 10:07  suleiman/jsc   Beam: Injector IOCSEs

  • 129282 12/13/06 07:40  jroche         Beam: parity quality over night

  • 129278 12/13/06 06:42  jroche         Beam: beam instability : HV trip

  • 129274 12/13/06 06:06  jroche         Beam: hall A off: charge assymetry decreased by a factor of two

  • 129273 12/13/06 06:05  jroche         Beam: hall A off: charge assymetry decreased by a factor of two

  • 129271 12/13/06 05:23  jroche         Beam: beam feedback off between 3:40 and 4:15

    • 

    Tuesday
    

  • 129241 12/12/06 21:36  suleiman       Beam: Charge Asymmetry and Position Differences from run 32827 - (IN, RHWP=-30, IA=5.7)

  • 129238 12/12/06 20:56  suleiman       Beam: Charge Asymmetry and Position Differences from run 32826 - (IN, RHWP=0, IA=4.2)

  • 129237 12/12/06 20:17  suleiman       Beam: Helicity controls

  • 129236 12/12/06 20:14  suleiman       Beam: Changed RHWP for IN to -30 degress (7500) before run 32827

  • 129191 12/12/06 15:35  suleiman       Beam: Charge Asymmetry and Position Differences from run 32811 - PC OFF -

  • 129190 12/12/06 15:19  Doug Beck/Ri   Beam: !! Pockels cell HV back on!!

  • 129187 12/12/06 15:03                 Beam: Hall A IA Slope was changed from -1750 DACV/ppm to -300 DACV/ppm

  • 129186 12/12/06 15:00  suleiman       Beam: Charge Asymmetry and Position Differences from run 32810 - (IN, RHWP=+20, IA=3.8)

  • 129185 12/12/06 14:55  Doug Beck/Ri   Beam: !!Pockells Cell HV OFF!!

  • 129183 12/12/06 14:45  suleiman       Beam: Charge Asymmetry and Position Differences from run 32809 - (IN, RHWP=-20, IA=5.3)

  • 129181 12/12/06 14:18  suleiman       Beam: Charge Asymmetry and Position Differences from run 32807 - (IN, RHWP=0, IA=4.2)

  • 129180 12/12/06 14:17  Doug Beck/Ri   Beam: Try again to reduce y position differences

  • 129176 12/12/06 13:52  Doug Beck/Ri   Beam: Attempt to reduce y position difference

  • 129161 12/12/06 12:13  Doug Beck      Beam: Working on charge asymmetry widths

    • 

    Monday
    

  • 129109 12/11/06 17:40  jschaub        Beam: Magnet Problem & New FSD Problem

  • 129106 12/11/06 16:51  jschaub        Beam: Beam Down

    • 

    Sunday
    

  • 129040 12/10/06 16:19  suleiman       Beam: Hall C BPMs Position Differences Widths from run 32773

  • 129039 12/10/06 16:12  suleiman       Beam: BCM1 had A Glitch in run 32773

  • 129036 12/10/06 15:54  suleiman       Beam: G0 Cavity Signals from run 32773

  • 129035 12/10/06 15:54  suleiman       Beam: Charge Asymmetry and Position Differences from run 32773 - Looks fine

  • 129034 12/10/06 15:53  suleiman       Beam: Coil Modulation Cycle from run 32766

  • 129017 12/10/06 10:43  Sarah          Beam: Halo Strip Chart

    • 

    Saturday
    

  • 128954 12/09/06 14:19  benesch        Beam: tuning optics with Moller quads off

    • 

    Friday
    

    

    Thursday
    

  • 128758 12/07/06 00:25  jroche         Beam: simple quantifying of the (past) y wiggling

    • 

    Wednesday
    

  • 128744 12/06/06 20:16  jroche         Beam: good beam since 2 hours

  • 128741 12/06/06 18:48  suleiman       Beam: The y position of the beam from a bad run - 32715 - 

  • 128740 12/06/06 18:40  suleiman       Beam: The beam y-motion from run 32714

  • 128736 12/06/06 17:39  jroche         Beam: bpm reading along the beam line before, during, after the Hall B polarization measurment

  • 128735 12/06/06 17:37  suleiman       Beam: Hall C BPMs Width - The beam y-motion is affecting the y-diff RMS

  • 128734 12/06/06 17:35  suleiman       Beam: G0 Cavity Signals from run 32714 - Note the correlation between y_G0B and y_CAV2 - The beam y-motion is real

  • 128733 12/06/06 17:33  suleiman       Beam: Charge Asymmetry and Position Differences from run 32714 - IN - It is good.

  • 128730 12/06/06 16:55  jroche         Beam: the beam is so bad that the detector tripped twice in 15mn

  • 128726 12/06/06 16:37  jschaub        Beam: Shift Summary and Checklist Snapshots

  • 128724 12/06/06 16:37  jroche         Beam: y position gone crasy when hall B off ?

  • 128717 12/06/06 16:12  jroche         Beam: y position is quiet

    • 

    Tuesday
    

  • 128648 12/05/06 17:42  benesch        Beam: new hall C orbit lock began about 1600

  • 128647 12/05/06 17:35  suleiman       Beam: Position Differences are getting better since MCC started to improve the Stability of y-position in Hall C line

  • 128643 12/05/06 16:54  suleiman       Beam: The Energy Modulation Cycle from run 32679 - After energy lock being moved to Hall A - It looks ok.

  • 128629 12/05/06 10:25  M Jones        Beam: Y positions at pivot and G0 girder

  • 128628 12/05/06 10:16  M Jones        Beam: Start beam studies and investigations

    • 

    Monday
    

  • 128555 12/04/06 18:46  ellis          Beam: beam situation

  • 128550 12/04/06 17:36  suleiman       Beam: G0 Cavity Signals from run 32673

  • 128549 12/04/06 17:34  suleiman       Beam: The Position Differences are Large

  • 128545 12/04/06 17:22  suleiman       Beam: The Position Differences are Large

  • 128523 12/04/06 12:00  smithg         Beam: IOCSE20 software bug & injector tuning

  • 128522 12/04/06 11:45  pate and jon   Beam: IHWP changed from OUT to IN ---  FLIPPER OUTPUT CONFUSING

    • 

    Sunday
    

  • 128481 12/03/06 22:03  jroche         Beam: cvxwrks unable to read g0and g0B epics variable but other users can !

  • 128471 12/03/06 18:58  Kinsley/ Roc   Beam: Y position is noisy

    • 

    Saturday
    

  • 128353 12/02/06 05:07  suleiman       Beam: Coil Modulation Cycle from run 32604

  • 128352 12/02/06 05:04  suleiman       Beam: G0 Cavity Signals from run 32604

  • 128350 12/02/06 05:00  suleiman       Beam: Charge Asymmetry and Position Differences from run 32604 - IN -

  • 128348 12/02/06 04:58  suleiman       Beam: Charge Asymmetry and Position Differences from run 32598 - OUT -

    • 

    Friday
    

  • 128295 12/01/06 15:34  beise          Beam: RF problems, beam off for 20 min

  • 128293 12/01/06 14:41  beise          Beam: Beam is Back:  H00A, etc. IOC rebooted

  • 128292 12/01/06 14:41  beise          Beam: Beam is Back:  H00A, etc. IOC rebooted

  • 128289 12/01/06 12:45  Beise          Beam: problems in accelerator

  • 128288 12/01/06 10:03  Beise          Beam: MCC takes beam to measure bunch length 

  • 128284 12/01/06 09:32  smithg         Beam: Magic knob for charge asymmetry width improvement

  • 128271 12/01/06 04:10  Alex           Beam: snapshots for the checklist