Page History

 1148-1164; 1166-1169

 8/8

e beam

various

BT1

0 degrees, various positions to align with tagger

yes

many different configurations, for expert only

 1170

e beam

1.5

BT1

0 degrees, center of tower 2

 yes

 dump in place, slits at 51.5

 1171

e beam

1.25 

BT1

0 degrees, center of tower 2

 yes

magnet current 600A, direct tagger calibration

 1172

e beam

1.125

BT1

0 degrees, center of tower 2

 yes

magnet current 600A, direct tagger calibration-NOT Synchronised

 1173

e beam

 1.375

BT1

0 degrees, center of tower 2

 yes

magnet current 600A, direct tagger calibration, slits reduce to 51

 1174

 8/8

e beam

1.125 

 BT1

0 degrees, center of tower 2

yes

magnet current 600A, direct tagger calibration

1282

13/8

e

BT1

48°,

Test - - Tagger calibration
Trigger is standard : S0.S2.S4.C1.C2.veto(S3+Sh)
Magnet Current set to 300A to shoot the beam directly in the Tagger.
300A is not enough trying to go up to 320A and then to 350A and then to 400A
400A is OK, Stopping run and start the Good On

 1283

 13/8

 e

 1 eEV

 BT1

 400 A

 1284

 13/8

 e

 0.75

 BT1

 330 A Synchronization Lost from the beginning...

 1285

 13/8

 e

0.75 GeV

BT1 

 Magnet Current = 330A
All 4 Si tagger chamber are fully populated.

 1286

13/8 

e 

.5 

 Magnet current @ 120 A
Pressure of C1 = 0.9 bars, C2=0.97 bars
Beam shut down after 18553 events

 1191

 9/8 8h51

-

-

 BT22 (S3 only)

-

-

monitor pedestal shift

 1165

 8/8

 BT22(S3 only)

 pedestal

 1198

 10/8

 BT22

 pedestal T ~22.3C

 1201

 11/8

 BT22

 Pedestal T~ ?

 1281

 13/8

 Pedestal- Trigger is now only S0 and the beam is off...have only muons deviated by the magnet.
We used to trigger on S3 when it was out of the beam, but now it's on the beam line, so we had to find a new strategy !
Average Rate 26Hz