Page History

 1201

 11/8

e- 

 2.5

 BT1

 0°

 av rate 34 HZ, CU instant rate 500 hz. S0 counts 21k per spîll

 1202

 e-

 2.5

 BT1

 3 phasing errors for 30k events. run stopped due to beam off

1205

e-

1.

S0:14 k count per spill
HW trg: 700 count per spill
DAQ trg: 300 count per spill
beam divergence: 6.3mrad on XZ, 5mrad on YZ

 1218-1219

11/08 
21h43 

 e-

 1.

 30° (x,y,z)=(200,13.2,-48)

no 

 Accidentally started runs in synchronized Run Control. These were automatically aborted by the program.

 1220

 22h06

 e-

1. 

BT1 

idem 

 No

 100K, S0 new trigger, S4 off

 1221

 22h20

 e-

 1.

BT1 

Idem 

 YES

 Refrence point before changing momentum

 1239

 12/08
11:02 

 e-

 .5

 idem

 500 MeV electron with magnet off to check dump position with electron beam.9K

 1240

 .5

 idem

 500 MeV electron with magnet off to check dump position with electron beam.

1176 

tagged g

3GeV

 600

BT1

0 degrees, center of tower 2

yes 

events in twr3?

 1177-1180

tagged g

e beam at 2.5GeV

 600

BT1

0 degrees, center of tower 2

yes

magnet ON, 25K evts per run 

 1206

 tagged gamma

e-  1GeV

 240

  idem

 S0:14k count per spill
HW trg: 100 count per spill
DAQ trg: 100 count per spill
Lot of 0 cluster in chamber 2 and 3, we need to tune the bending magnet and/or improve the veto to select a small spot.

 1207

 11/8

 tagged gamma

  240

  idem

 idem with S1 in the trigger
this run is to see if the zero that we see is a trigger or magner problem: it seem that it's a trigger issue: now the fraction of zero seems similar to what we saw in the other physics runs. 

 1208

11/8 11h34

 tagged gamma

 e-
1 GeV

 240

  idem

yes

  New trigger S3 in veto  - 25k

 1209

 11/8
13h29 

 tagged gamma

 e-
1GeV

 240

 idem

 yes and no

around 30k : SYNCHRONIZATION LOST !
stopping the run, first 30000 events should well sycnhronized...  

1210 

 11/8
16h34 

 tagged gamma

 e-
1GeV 

 240

 idem

 yes

 Synchronized Tagged gamma with 1GeV electron beam, going for 70k to get all the statistic : 100Kevents
(+25 k from 1208 this cpunt is not taken into account in the eloogbook)

 1211-1213

 11/8

  Tagged

 1 GeV

180-240

  BT1

 30° (x,y,z)=(200,13.2,-48)

 various Magnet currents for setting up

 1214

 Tagged

 e 1 GeV

 240

 BT1

 30° (x,y,z)=(200,13.2,-48)

 130k

 1215

 Tagged

 e 1GeV

 240

 BT1

 idem

 25k

 1216

 Tagged

 e 1 GeV

 240

 BT1

 idem

 25K

 1217

 11/8
21h22 

 Tagged

 e- 1 GeV

 240

 BT1

 idem

 30k
No spill during 4 minute

 1232

 12/08

 Tagged

 e- 2.5 GeV

 600

  BT1

 30° (x,y,z)=(200,13.2,-48)

 Not to be used , S4 not in the Trigger

 1233-1237

12/8 
7:21-9:36 

 Tagged

 e- 2.5

 600

 BT1

 idem

 1242

 12/8
11:45 

 e- 0.5 GeV

 100

 idem

 GeometryVerifiation

1243 

Tagged   idem

  e- 0.5 GeV

idem 

 idem

 yes

 rate too low

 1244-1245

12/08
12:44 13:35 

 Tagged  idem

  e- 0.5 GeV

 120

 idem

 yes

 1246

13:57 

 Tagged

 idem

  e- 0.5 GeV

120 idem 

 idem

 yes and no

 Sync lost after 6476 evts