CPP Test 2020 - Schedule

Detector configurations

Nominal GlueX configuration

• No Pb shielding
• DIRC installed
• Solenoid field at 1350 A
• Radiator Diamond JD70-105 47 um, Peak at 6 GeV

CPP Test Configuration

• With and without Pb shielding
• DIRC removed
• Solenoid field at 1350 A (no change)
• Radiator Diamond JD70-105 47 um, Peak at 6 GeV

Data taking (standard GlueX)

• daq_run: PHYSICS_DIRC
• daq_setup: hd_all.tsg_DIRC_CC_HL
• daq_config: FCAL_BCAL_PS_m9.conf
• Use Random Trigger GUI to set the random trigger rate to 30 kHz.
• Install desired target/lead sheet configuration
• Ask MCC to deliver beam at 20 nA.
• Start run.
  • Take data for 10 min of stable beam.
  • Ask MCC to deliver 40 nA. Continue with same run for 10 min of stable beam.
  • Ask MCC to deliver 30 nA. Continue with same run for 10 min of stable beam.
  • Ask MCC to deliver 10 nA. Continue with same run for 10 min of stable beam.
  • End run.
• Go to next target/lead sheet configuration

Checks during the run

1. TOF scaler rates
2. EPICS beam current. If possible check that it is being recorded onto tape

Test layout

Screenshots of test layout media:CPP_Testconfig.jpg  media:CPP_Testconfig2.jpg
media:CPP_Testconfig3.jpg  media:CPP_Testconfig4.jpg 
media:CPP_Testconfig5.jpg  media:CPP_Testconfig6.jpg

Test sequence

Possible test schedule by Tim Media:CPP_Tests_Aug2020.pdf

Total estimated time for test including installation, data taking and reinstallation of GlueX is 34 hours.

CPP Preliminary baseline measurements

These will be conducted by Ilya during Sat Aug 29 4am-10am shift. This will be conducted with the nominal GlueX configuration prior to test proper.

1. CPP test DAQ setup: 2 hrs
2. Set coherent peak to 6 GeV
3. Data GlueX configuration - Full Target/DIRC (repeat from Dec 2019): 2 hrs
4. Empty target : 1 hr
5. Data GlueX configuration - Empty Target/DIRC : 1 hr
6. Restore coherent peak to 8.6 GeV

Installation/setup of CPP Test: Day Mon Aug 31

1. Pass change for Hall A/C.
2. Hall D in restricted access starting at 6 am
3. Configure experiment for CPP Test: 12 hr. Mark Stevens and staff.
4. Training for Pb sheet install/removal to CPP personnel after changing configurations

CPP Test. Mon evening Aug 31 - Tue morning Sep 1

1. Full Target :
2. Install 0 Pb sheet: 1 hr
3. Data CPP Test configuration- Full Target/no DIRC/1Pb : 1 hr
4. Install 1 Pb sheet: 1 hr
5. Data CPP Test Configuration - Full Target/no DIRC/ 0Pb : 1 hr
6. Install 2 Pb sheets: 1 hr
7. Data CPP Test Configuration - Full Target/no DIRC/2Pb : 1 hr
8. Empty Target :
9. Install 0 Pb sheet: 1 hr
10. Data CPP Test configuration- Empty Target/no DIRC/1Pb : 1 hr
11. Install 1 Pb sheet: 1 hr
12. Data CPP Test Configuration - Empty Target/no DIRC/0Pb : 1 hr
13. Install 2 Pb sheets: 1 hr
14. Data CPP Test Configuration - Empty Target/no DIRC/2Pb : 1 hr

Restore GlueX configuration and prepare for GEM-TRD Test. Tue day Sep 1

1. Fill Target
2. Restore nominal GlueX configuration: 4 hours.

Required personnel

1. Two persons needed to install/remove Pb Sheets
2. Mark Dalton has volunteered to come in on Monday evening if a third person is required to monitor the target.

Tentative Shift Schedule

Date	Shift	Worker	CPP
Mon Aug 31	4 pm - 10 pm	T. Britton	D. Lawrence
Mon Aug 31	10 pm - 4 am	S. Furletov	I. Larin
Tue Sep 01	4 am - 10 am	M. Khachatryan	E. Smith

DIRC survey

1. The DIRC will have to be surveyed following the test.