Jefferson Lab Hall C Logbook for October 10 - Beam

  • Main INDEX

    Sunday

  • 203396 10/31/10 17:52  Benesch        Beam: IPM3H09B.XSOF=-4 again

  • 203322 10/31/10 12:37  benesch        Beam: IPM3H09B horizontal response

  • 203277 10/31/10 10:36  neven          Beam: Raster map run 6401

    • Saturday

  • 203147 10/30/10 22:58  birchall       Beam: Switched to 5 mm raster

  • 203126 10/30/10 18:11  birchall       Beam: Beam off for escorted access to top up trap

  • 203113 10/30/10 14:38  benesch        Beam: more on IPM3P02B 

  • 203112 10/30/10 14:22  benesch        Beam: Compton lock BPM dead; laser hut entry required

  • 203106 10/30/10 12:15  benesch        Beam: BPM allocation to IOCs

  • 203105 10/30/10 12:04  Pitt           Beam: Suggestion about y widths may have narrowed up on 10/28/2010 owl

  • 203103 10/30/10 11:22  benesch        Beam: analyzed "MultiHarp" data of 10/27

  • 203014 10/30/10 01:25  rob            Beam: beam is back but seems dirty

    • Friday

    

    Thursday
    

    

    Wednesday
    

    

    Tuesday
    

  • 202784 10/26/10 22:29  W. Deconinck   Beam: 10 uA CW straight-through

  • 202770 10/26/10 21:26  W. Deconinck   Beam: A cryo problem is preventing MCC from sending beam, no ETA

  • 202766 10/26/10 20:05  W. Deconinck   Beam: Sweep complete, now in beam permit again

  • 202761 10/26/10 19:30  W. Deconinck   Beam: Compton work done, transitioning back to beam permit

    • 

    Monday
    

  • 202575 10/25/10 15:16  benesch        Beam: lem current monitors produce noise

    • 

    Sunday
    

    

    Saturday
    

    

    Friday
    

  • 202168 10/22/10 23:03  saw            Beam: BCM calibration run

  • 202166 10/22/10 23:00  saw            Beam: EPICS BCM gains changed

  • 202149 10/22/10 21:49  saw            Beam: Beam on at 10uA

    • 

    Thursday
    

  • 202075 10/21/10 19:32  Davis, C.      Beam: MCC not worried about ion pump near  3H07A/B

  • 201986 10/21/10 14:51  dalton         Beam: Pockels cell voltages possibly OFF

    • 

    Wednesday
    

  • 201735 10/20/10 19:41  benesch        Beam: 3C19 harp

  • 201719 10/20/10 18:26  dalton         Beam: optics changes seen at 1C19

  • 201681 10/20/10 12:25  birchall       Beam: Raster pattern

    • 

    Tuesday
    

  • 201576 10/19/10 23:40  W. Deconinck   Beam: Back to controlled access: C. Keith et al coming in

  • 201575 10/19/10 23:35  W. Deconinck   Beam: 1uA CW, 4x4mm, through Compton chicane for Compton edet studies

  • 201574 10/19/10 23:34  W. Deconinck   Beam: Requested beam permit, after masking diff pressure FSD

  • 201569 10/19/10 22:15  W. Deconinck   Beam: Beam off, target problem, requested escorted access asap

  • 201503 10/19/10 16:57  W. Deconinck   Beam: MCC masked the GEM ion chamber FSD

  • 201502 10/19/10 16:52  W. Deconinck   Beam: Back to Compton studies

  • 201497 10/19/10 16:27  W. Deconinck   Beam: Problem with the gun, should be up in a few minutes again

  • 201474 10/19/10 12:28  dalton         Beam: New optics available, 400um x 400um on target

  • 201472 10/19/10 11:51  dalton         Beam: New quad settings required by Moller quad outage

  • 201421 10/19/10 04:29  kamyers        Beam: having issues getting sttable beam at low current -> skip W plug centering check for now..

  • 201420 10/19/10 04:02  kamyerse       Beam: having issues again getting stable lock

  • 201418 10/19/10 03:05  kamyers        Beam: orbit lock back up

  • 201414 10/19/10 02:26  kamyers        Beam: update on beam restore

  • 201413 10/19/10 01:49  kamyers        Beam: orbit lock troubles

    • 

    Monday
    

  • 201360 10/18/10 15:17  benesch        Beam: hall C orbit lock goals updated

  • 201328 10/18/10 11:36  gunning        Beam: Down Due to Raster Problem

  • 201322 10/18/10 09:55  birchall       Beam: Orbit lock

  • 201320 10/18/10 09:32  birchall       Beam: Change of hall BPMs in orbit lock

  • 201319 10/18/10 09:32  birchall       Beam: Change of hall BPMs in orbit lock

  • 201311 10/18/10 08:35  gunning        Beam: Raster

    • 

    Sunday
    

  • 201249 10/17/10 22:05  paschke        Beam: bpm resolution

  • 201247 10/17/10 21:30  W. Deconinck   Beam: RF problems, expert called in

  • 201241 10/17/10 20:43  W. Deconinck   Beam: RF trip, another 10-15 mins before beam

  • 201226 10/17/10 18:52  dalton         Beam: Pockels cell voltages changed

  • 201204 10/17/10 16:54  W. Deconinck   Beam: Start of beam mod studies by Josh & Nur

  • 201193 10/17/10 16:23  W. Deconinck   Beam: 1 uA, 4x4 mm raster, goal: checking BPMs

  • 201190 10/17/10 16:20  benesch        Beam: FFB vertical changed recently

  • 201183 10/17/10 15:58  W. Deconinck   Beam: MCC is reconditioning the gun

  • 201171 10/17/10 14:41  birchall       Beam: "Golden" BPM values

  • 201097 10/17/10 00:07  Spayde         Beam: Changed PC Voltages Prior to Run 5950

    • 

    Saturday
    

  • 201090 10/16/10 23:06  Davis, C.      Beam: Raster fails

  • 201077 10/16/10 21:30  Spayde         Beam: Fast Raster X Went Away for Awhile

  • 201076 10/16/10 21:23  Davis, C.      Beam: Raster fails

  • 201070 10/16/10 20:58  Spayde         Beam: Prepping for PITA Scan/Ending Run 5941

  • 201013 10/16/10 13:18  gunning        Beam: Down Due to Raster Problem

  • 200983 10/16/10 09:14  suleiman       Beam: The correct screen for the Injector parity controls

    • 

    Friday
    

  • 200926 10/15/10 22:38  Spayde         Beam: Back In the Saddle

  • 200923 10/15/10 22:19  Spayde         Beam: Beam Issues

  • 200888 10/15/10 19:22  Spayde         Beam: Going to 100 nA in Order to Shoot the Tungsten Plug

  • 200878 10/15/10 19:05  Spayde         Beam: Going to 10 uA

  • 200870 10/15/10 18:35  Spayde         Beam: Going to 40 uA on No Target

  • 200867 10/15/10 18:23  Spayde         Beam: Requesting 50 uA from MCC on No Target with 4x4 Raster

  • 200804 10/15/10 12:07  birchall       Beam: No more than 50 uA of beam until Monday

  • 200780 10/15/10 08:55  birchall       Beam: Beam off for injector work at 10:00 until 11:00 today

  • 200710 10/15/10 01:28  Spayde         Beam: MCC Takes Beam to Clean Up Losses

    • 

    Thursday
    

  • 200642 10/14/10 21:54                 Beam: Run 5853 Positions and W Plug Rastermap

  • 200634 10/14/10 21:00  Spayde         Beam: 100 nA Beam with Orbit Locks On

  • 200621 10/14/10 20:06  benesch        Beam: BPMs for final orbit lock

  • 200611 10/14/10 18:28  Spayde         Beam: Beam Status

  • 200459 10/14/10 02:08  Spayde         Beam: Down Due to Raster Problem

    • 

    Wednesday
    

  • 200433 10/13/10 23:34  Spayde         Beam: Ramping Up to 150 uA

  • 200430 10/13/10 22:58  Spayde         Beam: Beam at 1 uA

  • 200429 10/13/10 22:50  Spayde         Beam: MCC is Tuning Beam Back Into the Hall

  • 200376 10/13/10 13:13  benesch        Beam: orbit lock back to summer configuration 

  • 200262 10/13/10 00:29  Spayde         Beam: Position Locks Off (Very Late Entry)

  • 200261 10/13/10 00:15  Spayde         Beam: BPMs and Halos for Tungsten Plug Centering (right after run 5792)

    • 

    Tuesday
    

  • 200244 10/12/10 23:10  Spayde         Beam: BPMs and Halos for DS Hole Centering (Run 5790)

  • 200237 10/12/10 22:44  Spayde         Beam: BPMs and Halos for Tungsten Plug Centering

  • 200217 10/12/10 20:51  Spayde         Beam: Switching Back to Straight Through Beampath

  • 200195 10/12/10 19:21  Spayde         Beam: Asked MCC for 5 uA

  • 200180 10/12/10 19:00  Spayde         Beam: Beam Status

  • 200166 10/12/10 17:29  Spayde         Beam: Changed Helicity Reversal Rate to 943 Hz

  • 200162 10/12/10 16:58  Spayde         Beam: Changed Helicity Reversal Rate to Something Close to 960 Hz

  • 200118 10/12/10 11:00  dalton         Beam: Add to runplan: charge asymmetry feedback calibration

  • 200104 10/12/10 08:51  donjones       Beam: strange raster pattern

  • 199936 10/12/10 00:17  Spayde         Beam: Asked MCC to Move Beam Right 2 mm and Up 0.5 mm

    • 

    Monday
    

  • 199925 10/11/10 23:58  Sarah          Beam: Screen Capture of BPMs

  • 199924 10/11/10 23:57  Spayde         Beam: Fast Raster to 12x12 for W Centering

  • 199916 10/11/10 22:45  Phillips/Spa   Beam: Tune Beam and Orbit Locks

  • 199869 10/11/10 17:17  benesch        Beam: 3C05 and 3C12B harps fixed

  • 199767 10/11/10 00:19  rob            Beam: late entry: troubles with the raster tonight

    • 

    Sunday
    

  • 199759 10/10/10 23:47  mgericke       Beam: Centering on W plug .. the "final" episode  ?

  • 199750 10/10/10 22:39  mgericke       Beam: Beam or no beam ... that is the question ...

  • 199743 10/10/10 22:29  mgericke       Beam: Beam back

  • 199738 10/10/10 21:51  rob            Beam: beam is back

  • 199723 10/10/10 20:09  mgericke       Beam: Beam centering on W plug take 2

  • 199719 10/10/10 19:56  mgericke       Beam: Beam centering on W plug take 1

  • 199692 10/10/10 19:11  rob            Beam: turned off halos and lumis to accept tune beam

  • 199675 10/10/10 17:58  mgericke       Beam: QTor

  • 199643 10/10/10 16:43  benesch        Beam: harp scans with 4x4 raster

  • 199642 10/10/10 16:34  mgericke       Beam: Harp scan

  • 199621 10/10/10 15:26  W. Deconinck   Beam: Beam tuned by Jay, getting ready for raster centering

  • 199600 10/10/10 12:45  W. Deconinck   Beam: Vacuum gauge situation: seems like that gauge is not really important...

  • 199598 10/10/10 12:36  W. Deconinck   Beam: Still waiting for beam, vacuum issue...

  • 199596 10/10/10 10:14  W. Deconinck   Beam: Vacuum gauge broken (another one)

  • 199567 10/10/10 01:51  mgericke       Beam: raster y vs x plots for "beam finding"

    • 

    Saturday
    

  • 199541 10/09/10 17:17  rob            Beam: waiting for beam; next step is to reestablish tune beam

    • 

    Friday
    

    

    Thursday
    

  • 199440 10/07/10 16:32  dalton         Beam: Hall C IA disconnected

    • 

    Wednesday
    

    

    Tuesday
    

    

    Monday
    

    

    Sunday
    

    

    Saturday
    

    

    Friday