Return to List of Daily Run Plans
Shift Duties
- Take Production data
- Log all issues, alarms and questions.
- Perform shift checklist.
- Log target status twice per shift.
Production Running
Take 1 hour runs for both Left HRS DAQ and Right HRS DAQ.
Follow Kinematic settings for DVCS Kin_60_1 and GMp 4th Pass "Parasitic" Kinematics, summarized below:
Beam current
|
10 μA
|
Beam Energy
|
8.5 GeV
|
Target
|
LH2 (Loop 2)
|
Raster
|
ON (2x2mm2) [MCC units h=2, w=3]
|
VDC HV (both arms)
|
ON
|
DVCS Calo HV
|
ON
|
DVCS Kin_60_1
DVCS Calo Angle
|
15.89°
|
DVCS Calo Distance
|
1.5 m
|
LHRS Polarity
|
Negative
|
LHRS Momentum
|
3.594 GeV/c
|
LHRS Angle
|
24.564°
|
LHRS Q1 Current
|
749.67 Amps (regulator OFF)
|
LHRS DAQ Config
|
DVCS
|
prescaleL
|
PS9=1 (all others zero)
|
GMp 4th Pass "Parasitic" Kinematics
RHRS Polarity
|
Negative
|
RHRS Momentum
|
1.804 GeV/c
|
RHRS Angle
|
53.475°
|
RHRS DAQ Config
|
RHRSadaq2
|
prescaleR
|
PS1=PS2=PS3=1, && PS8=100 (all others zero)
|
Compton runs
Stop/Start a Compton run every 2 hours - The Compton DAQ is running on the COMPTON computer located in the back room in the Hall A counting house (the room with food)
DVCS Trigger efficiency runs: instructions from Carlos
1) With the same CODA, target and beam configurations as production, bring the DVCS prescales GUI from adaq1 by typing:
prescale_DVCS
2) Set the prescales as follows:
- 103kHz Clock: "Disabled"
- S0 & S2M: "1"
- S0 & CER: "Disabled"
- S2M & CER: "1"
Click the "Save" button to load the new settings. There is no need to restart or download the CODA configuration for these changes to be taken into account.
3) Take a 15 min run.
4) Set the prescales as follows:
- 103kHz Clock: "Disabled"
- S0 & S2M: "Disabled"
- S0 & CER: "1"
- S2M & CER: "Disabled"
Click the "Save" button to load the new settings. There is no need to restart or download the CODA configuration for these changes to be taken into account.
5) Take a 15 min run
6) Restore the production prescales:
- 103kHz Clock: "16384"
- S0 & S2M: "Disabled"
- S0 & CER: "Disabled"
- S2M & CER: "1"
Click the "Save" button to load the new settings. There is no need to restart or download the CODA configuration for these changes to be taken into account.
Exit the DVCS prescale GUI by cliking the "Exit" button
7) Resume production...