Jefferson Lab Hall C Logbook for April 11 - Beam
Main INDEX
Saturday
231063 04/30/11 19:49 Spayde Beam: Current Back to 165 uA
231059 04/30/11 19:41 Spayde Beam: Reduced Beam Current to 155 uA
231057 04/30/11 19:35 Spayde Beam: Reduced Beam Current to 160 uA
231052 04/30/11 18:50 benesch Beam: misinterpretation of my elog
231036 04/30/11 16:57 benesch Beam: numerology amusement
230988 04/30/11 10:53 benesch Beam: injector RF troubles not strongly current dependent
230933 04/30/11 02:59 magee Beam: Current returned to 172 uA
230925 04/30/11 01:50 magee Beam: RF cavity problems and ramp rate
Friday
230872 04/29/11 19:34 Benesch Beam: current will have to be reduced when IHWP is OUT
Thursday
230642 04/28/11 15:31 kamyers Beam: Wein flip will take place today
230640 04/28/11 14:46 benesch Beam: Wien flip might take place tonight
Wednesday
230539 04/27/11 20:37 benesch Beam: vertical Compton scan
Tuesday
Monday
Sunday
229978 04/24/11 22:03 Page Beam: Hall A reduces current for a few hrs. We go up to 165 uA
229952 04/24/11 19:28 manos Beam: Large position differences at the target
229912 04/24/11 13:12 Adesh Beam: back to 160 uA
229886 04/24/11 08:59 Adesh Beam: Hall C now getting 165 uA
Saturday
229779 04/23/11 20:06 covrig Beam: tungsten plug HIGH limit changed to 31
229753 04/23/11 16:09 benesch Beam: 0R04 troubleshooting
229738 04/23/11 15:01 Adesh Beam: Beam back
229729 04/23/11 12:21 jhlee Beam: Beam status before MCC took it away
229722 04/23/11 10:04 Adesh Beam: MCC has taken beam away
229714 04/23/11 09:10 Adesh Beam: 100 uA of beam with 3.5 x 3.5 raster
229709 04/23/11 08:43 Adesh Beam: problems in beam delivery
229681 04/23/11 05:14 narayan Beam: temporarily down
Friday
229638 04/22/11 23:25 covrig Beam: moller ioc dead?
229615 04/22/11 19:38 manos Beam: Injector analysis of run during unstable beam
229608 04/22/11 19:06 benesch Beam: FFB server was locked up around 1700
229447 04/22/11 01:09 kamyers Beam: HC position diff in X slightly more broad starting with run 11545
Thursday
Wednesday
229209 04/20/11 20:41 benesch Beam: another report
229202 04/20/11 19:58 Chuck Davis Beam: Jay reports on crappy beam
229123 04/20/11 10:14 covrig Beam: DS bellows temperature with Qtor field
Tuesday
Monday
228877 04/18/11 13:01 covrig Beam: ds beamline vacuum
Sunday
Saturday
Friday
228708 04/15/11 19:47 jroche Beam: Hall A will run at 95 uA for the night
228626 04/15/11 13:18 covrig Beam: downstream beam line vacuum behavior
Thursday
228433 04/14/11 15:15 jroche Beam: beam away for laser work
228431 04/14/11 15:08 jroche Beam: started injector run 2346
228427 04/14/11 13:58 jroche Beam: MCC takes one (cavity) zone away to reduce beam trip rate
Wednesday
Tuesday
228083 04/12/11 21:15 benesch Beam: Injector BPM FFTs
Monday
227769 04/11/11 09:22 benesch Beam: Compton rate drift
Sunday
227671 04/10/11 18:30 smithg Beam: beam off again cuz of BSY PSS dropout
227669 04/10/11 17:52 smithg Beam: beam off 25 minutes
227616 04/10/11 11:09 benesch Beam: altered prebuncher phase 1036-1039 to cut Compton background
Saturday
227390 04/09/11 01:47 covrig Beam: charge asym width got worse in the past 2-3 hours
Friday
227314 04/08/11 15:17 benesch Beam: RF trip rate up to 3/hr
227299 04/08/11 14:23 benesch Beam: Compton scintillator rate cut via prebuncher phase
227217 04/08/11 05:16 covrig Beam: charge feedback was ON as long as parity daq was running
227190 04/08/11 01:10 covrig Beam: IHWP = OUT
227188 04/08/11 01:03 covrig Beam: end of run 11195 eb4 crashed
Thursday
227151 04/07/11 20:55 kamyers Beam: Having some trouble achieving good tune
227075 04/07/11 06:57 covrig Beam: ramping qtor to zero for the duration of the injector work
227074 04/07/11 06:52 covrig Beam: tune beam in the hall
227071 04/07/11 06:42 covrig Beam: mcc takes the beam away to start the injector work
227061 04/07/11 05:08 covrig Beam: asked for an injector autosteer
Wednesday
226891 04/06/11 07:55 covrig Beam: DS bellows temp 3 and vacuum behavior overnight
226881 04/06/11 06:33 covrig Beam: ramped qtor back to full current
226877 04/06/11 06:01 covrig Beam: ioc recovery estimate from mcc: couple of hours
226874 04/06/11 05:23 covrig Beam: rf lost in NL due to a cryo ioc crash
226846 04/06/11 01:28 covrig Beam: IHWP in IN
226844 04/06/11 01:15 covrig Beam: injector autosteer
Tuesday
226706 04/05/11 04:32 covrig Beam: rebooted g0ioc4
Monday
226667 04/04/11 23:44 birchall Beam: Updated sensitivities
226622 04/04/11 17:05 birchall Beam: Ion chamber in GEM enclosure around time raster size increased to 4x4.
226615 04/04/11 16:45 benesch Beam: GEM and LUMI ion chamber trip points raised 17%
Sunday
226413 04/03/11 16:07 benesch Beam: prebuncher, not steering, affected Compton background
Saturday
226218 04/02/11 14:03 wdconinc Beam: Changing IHWP from IN to OUT
226181 04/02/11 09:40 wdconinc Beam: 155uA CW
226172 04/02/11 07:39 donjones Beam: No beam in Hall yet
226166 04/02/11 06:53 donjones Beam: beam delivery problem may be due to wrong Moller quad polarity
226162 04/02/11 05:56 donjones Beam: No Beam. MCC having trouble with first BLM after Moller
226153 04/02/11 04:21 donjones Beam: QTor tripped while trying to restore beam
226150 04/02/11 03:48 donjones Beam: Moller Quad status
Friday
226056 04/01/11 15:05 EmmanuelK Beam: PC nominal voltage stays the same for IHWP IN,OUT
226050 04/01/11 14:21 wdconinc Beam: 155 uA CW
226003 04/01/11 10:31 birchall Beam: Beam moved 0.25 mm to beam right
225991 04/01/11 09:08 wdconinc Beam: MCC starting BLA calibration