Jefferson Lab Hall C Logbook for November 10 - Beam

  • Main INDEX

    Tuesday

  • 209264 11/30/10 23:08  W. Deconinck   Beam: 140 uA on LH2, 3x3

  • 209257 11/30/10 21:40  W. Deconinck   Beam: Tune beam for BCM studies

  • 209249 11/30/10 20:10  W. Deconinck   Beam: Setting up beam through the chicane at 10 uA

  • 209196 11/30/10 16:31  W. Deconinck   Beam: 1 uA, 12x12 (more W plug hits this way)

  • 209193 11/30/10 16:27  W. Deconinck   Beam: 1 uA, 3x3 for raster map

  • 209170 11/30/10 12:11  Page           Beam: Update - beam can be available after 2 pm

  • 209160 11/30/10 08:33  Pitt           Beam: More on the relation between MD asymmetry widths and BCM noise

    • Monday

  • 209094 11/29/10 22:02  Page           Beam: RF problems - negotiated compromise for tonight

  • 209043 11/29/10 14:46  Page / Birch   Beam: Beam Positions for 7C and 9B locks

  • 209024 11/29/10 10:36  Pitt           Beam: Oops: incorrect double difference plots

  • 209017 11/29/10 07:16  Pitt           Beam: Comments on BCM double differences

    • Sunday

  • 208969 11/28/10 20:57  benesch        Beam: hcrate14 is STILL changing even though beam is out of Compton 

  • 208968 11/28/10 20:47  Pitt           Beam: Revised test plan for halo target centering/calibration

  • 208962 11/28/10 19:51  benesch        Beam: tiny beam at Compton interaction point 

  • 208947 11/28/10 17:46  benesch        Beam: SL phase is unstable

  • 208946 11/28/10 17:43  Page           Beam: Halo etc

  • 208900 11/28/10 13:17  dalton         Beam: Correlated and anti-correlated

  • 208883 11/28/10 12:07  Pitt           Beam: Halo 4 correlated with Compon photon detector trip

    • Saturday

  • 208793 11/27/10 21:03  benesch        Beam: transmission oscillating with fifteen minute period

    • Friday

  • 208541 11/26/10 11:38  Page           Beam: Injector transmission is really good

  • 208513 11/26/10 09:39  Page           Beam: Beam is back at 140 uA CW

    • Thursday

    

    Wednesday
    

  • 208390 11/24/10 10:06  kamyers        Beam: BPM plots for Run 7508: FFB ON, FF OFF

  • 208376 11/24/10 08:25  Pitt           Beam: Test plan for halo target centering/calibration

  • 208363 11/24/10 06:39  Pitt           Beam: Halo 4 rates back to their "good" values

    • 

    Tuesday
    

    

    Monday
    

  • 208072 11/22/10 18:36  W. Deconinck   Beam: Back to quartets at 960 Hz (late entry)

  • 208057 11/22/10 17:42  W. Deconinck   Beam: Switched helicity board to octoquads

  • 208042 11/22/10 13:43  suleiman       Beam: Hall C FFB was not responding during at this time

  • 208033 11/22/10 11:59  W. Deconinck   Beam: Dave Mack messing with BCM signals as of 11:59am

  • 207968 11/22/10 01:14  narayan        Beam: all HV (MD , Lumi) turned off

    • 

    Sunday
    

  • 207841 11/21/10 07:21  benesch        Beam: peak at 240 Hz

    • 

    Saturday
    

  • 207787 11/20/10 20:40  benesch        Beam: elog entry with harp scans for big spot

  • 207767 11/20/10 18:13  W. Deconinck   Beam: Current restriction during Carbon tests

  • 207762 11/20/10 17:43  W. Deconinck   Beam: Carbon target run plan

  • 207756 11/20/10 16:05  benesch        Beam: FFB gain

  • 207691 11/20/10 08:41  benesch        Beam: Accelerator modulation frequencies

  • 207684 11/20/10 08:13  benesch        Beam: angle scan plots and spreadsheet

  • 207679 11/20/10 07:35  saw            Beam: Variables to look at instead of qw:exitwindow

    • 

    Friday
    

  • 207467 11/19/10 10:57  benesch        Beam: two changes by Ops: YSOFs and slow lock 

  • 207423 11/19/10 06:32  benesch        Beam: forwarded BPM questions to controls group

  • 207422 11/19/10 06:24  benesch        Beam: SOF values from allsaves since 11/10/10

    • 

    Thursday
    

  • 207318 11/18/10 19:00  Benesch        Beam: ion pump on/off test

  • 207249 11/18/10 10:03  Benesch        Beam: 3H04 is DOWNSTREAM of fast raster

  • 207244 11/18/10 08:55  W. Deconinck   Beam: Triple beam spot in 3H04 on FastSEE (?)

  • 207243 11/18/10 08:50  W. Deconinck   Beam: Realtime FastSEE FFTs on Hall BPMs

    • 

    Wednesday
    

    

    Tuesday
    

  • 206920 11/16/10 21:47  A. Micherdzi   Beam: ELectron detector studies are finished, beam is down -- problem with e- gun.

  • 206910 11/16/10 19:08  A. Micherdzi   Beam: Beam is back -- electron detector study continues 

  • 206907 11/16/10 18:41  A. Micherdzi   Beam: no beam: MCC is doing slow orbit corrections

  • 206876 11/16/10 15:20  Benesch        Beam: another 9.5 kHz suspect - pre-buncher

  • 206874 11/16/10 15:11  benesch        Beam: it's not clear the 9.5 kHz source was found

  • 206870 11/16/10 14:59  rob            Beam: Wien angle changed; vertical noise source identified and removed

  • 206840 11/16/10 10:33  saw            Beam: Buddhini Beam Projection script ported to EPICS

    • 

    Monday
    

  • 206769 11/15/10 23:59  A. Micherdzi   Beam: Matching it time Parity and Injector runs (formatted 206765 entry)

  • 206765 11/15/10 23:36  A. Micherdzi   Beam: Matching it time Parity and Injector runs

  • 206662 11/15/10 11:12  saw            Beam: BPMs added to Hall C EPICS archiver

    • 

    Sunday
    

  • 206539 11/14/10 23:06  W. Deconinck   Beam: QTOR FSD works as intended

  • 206527 11/14/10 21:26  W. Deconinck   Beam: Increased beam current ramp rate to 1.5 uA / s

  • 206522 11/14/10 20:50  W. Deconinck   Beam: BCM gain settings at 2 for both BCM1 and BCM2

  • 206481 11/14/10 17:42  benesch        Beam: Moller tune changes the last two quads in the line

  • 206454 11/14/10 16:01  saw            Beam: Beam ramp up rate

  • 206312 11/14/10 05:51  covrig         Beam: exit window simulation

    • 

    Saturday
    

  • 206046 11/13/10 11:58  benesch        Beam: better lines with IPM3H07A reduced by 1 too

  • 206037 11/13/10 11:33  benesch        Beam: if the beam is a straight line, 3H08.Y is 1.4mm high

  • 205959 11/13/10 06:50  benesch        Beam: IPM3H08 vertical offset is wrong by about 1.4mm

    • 

    Friday
    

  • 205685 11/12/10 18:48  Micherdzinsk   Beam: We started BPM pedestal calibration

  • 205640 11/12/10 16:12  saw            Beam: Added calculated beam position variables to EPICS archiver

  • 205632 11/12/10 15:01  benesch        Beam: survey offsets input for last six BPMs

  • 205618 11/12/10 13:03  rob            Beam: observations during inspection of the hall

  • 205568 11/12/10 06:53  jdiefen        Beam: MCC moved harp 3h07a

  • 205567 11/12/10 06:44  jdiefen        Beam: MCC asks to send 5 muA beam into hall

    • 

    Thursday
    

  • 205485 11/11/10 22:58  benesch        Beam: It's not pretty

  • 205438 11/11/10 18:44  benesch        Beam: DAQ problem for IPM3C20? 

  • 205402 11/11/10 11:41  benesch        Beam: beamline between 3H07 and 3H09 went up to air

  • 205400 11/11/10 11:36  benesch        Beam: four back-up modulation MAT correctors disconnected; harp 3H09B has carbon wire

  • 205398 11/11/10 10:32  saw            Beam: Exit window EPICS value not a reflection of reality

  • 205390 11/11/10 09:22  rob            Beam: bpm replacement status: bleeding the beamline

    • 

    Wednesday
    

  • 205280 11/10/10 19:16  benesch        Beam: hall C optics exploration mostly moot

  • 205271 11/10/10 17:50  saw            Beam: Historical Exit window temperatures

  • 205268 11/10/10 17:34  Micherdzinsk   Beam: We have beam back, Jay takes over to do beam optics study.

  • 205266 11/10/10 17:28  Micherdzinsk   Beam: MCC sends tune beam now

  • 205251 11/10/10 13:42  gaskell        Beam: inserted 30 db attenuator for BCM17

    • 

    Tuesday
    

  • 205026 11/09/10 16:55  saw            Beam: ibcm5 and ibcm6 added to vmec15 EPICS server

    • 

    Monday
    

  • 204822 11/08/10 18:58  dalton         Beam: RHWP changed to 1850

  • 204760 11/08/10 13:20  benesch        Beam: 3H09 girder stuff

  • 204731 11/08/10 09:08  benesch        Beam: harp and IPM3H09B exploration 

    • 

    Sunday
    

  • 204649 11/07/10 20:23  benesch        Beam: impose only partial correction? 

  • 204645 11/07/10 20:18  W. Deconinck   Beam: 50 uA, LH2, continued QTOR off data taking

  • 204638 11/07/10 19:35  W. Deconinck   Beam: Still no resolution ion beam dump IOC, expert is coming in

  • 204610 11/07/10 17:41  W. Deconinck   Beam: 50 uA, LH2, continued production running

  • 204507 11/07/10 08:35  Gericke        Beam: Feedback

  • 204506 11/07/10 08:35  Gericke        Beam: Feedback

  • 204489 11/07/10 06:39  benesch        Beam: Pockel Cell +HV Alarm

    • 

    Saturday
    

  • 204290 11/06/10 21:34  W. Deconinck   Beam: FFB on, FF on again

  • 204204 11/06/10 16:39  W. Deconinck   Beam: Requested beam permit again

  • 204198 11/06/10 16:16  W. Deconinck   Beam: Controlled access for rad con badge removal (Mack)

  • 204118 11/06/10 12:15  Gericke        Beam: BPM positions, once again

  • 204097 11/06/10 11:34  Gericke        Beam: Wrong figure for miss-alligned beam on W plug

  • 204096 11/06/10 11:29  Gericke        Beam: Beam centering on tungsten plug

  • 204093 11/06/10 11:24  Gericke        Beam: Centering on tungsten plug not even close

    • 

    Friday
    

  • 203870 11/05/10 14:50  saw            Beam: Reboot vmec15 for BCM gain change

  • 203861 11/05/10 14:37  gaskell        Beam: BCM gains set to 2

  • 203849 11/05/10 13:32  saw            Beam: Beam modulation variables in EPICS archiver

    • 

    Thursday
    

    

    Wednesday
    

    

    Tuesday
    

  • 203551 11/02/10 13:18  benesch        Beam: IPM3H09B offset changed again, along with hardware

    • 

    Monday