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| − | ==Summary of Optics Plan== | + | ==Run Plan== |
| − | | + | *[[Summary of g2p Optics Plan]] |
| − | '''Define the following jobs:'''
| + | |
| − | ''' A. Acceptance calibration, sieve out, rasters on and off (large C12, no LHe)'''
| + | |
| − | ''' B. Delta scan, (sieve in, C12, no LHe) '''
| + | |
| − | ''' C. Beam position scan (Sieve in, large C12, no LHe, 8 points on x,y axis and 4 additional points at corner) '''
| + | |
| − | ''' D. Pointing (Sieve in, CH2, need to refill LHe)'''
| + | |
| − | | + | |
| − | === 0T @ 2.257:===
| + | |
| − | Do A, move sieve in, do B and C(12 points), refill LHe do D.
| + | |
| − | At the end take elastic NH3 data to check NH3 thickness.
| + | |
| − | When finish: move sieve out; Ramp field up to 2.5T; Drain LHe
| + | |
| − | | + | |
| − | | + | |
| − | === 2.5T, 90deg @ 2.257:===
| + | |
| − | Do A, move sieve in, do B and C(12 points), refill LHe do D.
| + | |
| − | When finish: Ramp field up to 2.5T; Drain LHe out
| + | |
| − | | + | |
| − | === 5.01T, 6deg @ 2.257:===
| + | |
| − | '''Do B and C(8 points), refill LHe do D.
| + | |
| − | | + | |
| − | Here is the optics plan for 2.254GeV with 5.01T at 90 degrees target field.
| + | |
| − | Before doing optics, beam center and slow raster size have to be determined.
| + | |
| − | Take 2 runs, each run 500k events for each point.
| + | |
| − | | + | |
| − | No LHe, LHRS starts at 0% and right HRS start at 0%:
| + | |
| − |
| + | |
| − | 0. Draining LHe, take C12 data at the same time. (40 minutes)
| + | |
| − |
| + | |
| − | 1. Pointing: 250-mil-CH2, sieve in ,delta=0, no rasters (30 minutes)
| + | |
| − | Take data till the H peak of a normal sieve hole can be fit.
| + | |
| − |
| + | |
| − | 2. Acceptance calibration, part 1: C12, sieve in, delta=0 (10 minutes)
| + | |
| − | 1) both rasters on
| + | |
| − |
| + | |
| − | 3. Beam position scan: C12, delta=0; sieve in, slow raster only, (80 minutes)
| + | |
| − | Config the slow raster to jump in the following way (2 x 800k):
| + | |
| − | 1)between (x=-5, y=-5) and (5,5)
| + | |
| − | 2)between x=0, y=+/-5
| + | |
| − | 3)between x=+/-5, y=0
| + | |
| − |
| + | |
| − | 4. Delta scan: 100-mil-C12, sieve in , no raster (3 hours)
| + | |
| − | Cycle Left Q2 and Q3, started from -3% at left arm and 0% at right arm.
| + | |
| − | Left HRS: -3%, -1%, 0%, 1%, 3%
| + | |
| − | Right HRS: 0%, 2%, 3.5%
| + | |
| − |
| + | |
| − | **Escorted access to move sieve out when finish and Ramp dipoles back to 0% (40 minutes)
| + | |
| − |
| + | |
| − | 5. Acceptance calibration, part2: C12, sieve out, delta=0 (20 minutes)
| + | |
| − | 1) no rasters
| + | |
| − | 2) both rasters
| + | |
| − |
| + | |
| − |
| + | |
| − | Estimated time: 7 hours
| + | |
| − |
| + | |
| − | At the end of the optics, refill LHe, change to the 1st production point,
| + | |
| − | start dilution runs then polarize NH3 target.
| + | |
| − | | + | |
| − | === 2.5T, 90deg @ 1.706:===
| + | |
| − | Do A, move sieve in, do B and C(8 points), refill LHe do D.
| + | |
| − | When finish: Rotate target field to 6 deg; Ramp up to 5.01T; Darin LHe out
| + | |
| − | | + | |
| − | === 5.01T, 6deg @ 1.706 GeV:===
| + | |
| − |
| + | |
| − | '''Here is the optics plan for gep at 1.706 GeV:
| + | |
| − | '''P0=1.691
| + | |
| − |
| + | |
| − | Sieve IN:
| + | |
| − | target config number of events or beam time
| + | |
| − | C12 Sieve IN, No rasters 2 x 1M (10 minutes)
| + | |
| − | C12 Sieve IN, Both rasters 2 x 1M (10 min)
| + | |
| − | NH3 Sieve IN, Both rasters 3 x 7M (about 1 hours, which will give
| + | |
| − | about 400 events when cut to 1x1 beam size)
| + | |
| − | **Escorted access to move sieve out (30 min)
| + | |
| − |
| + | |
| − | C12 Sieve out, both rasters 30 minutes(about 10 M events for each
| + | |
| − | arm, good for dilution)
| + | |
| − |
| + | |
| − | In total 2.5 ABU, 3 hours were allocated.
| + | |
| − | | + | |
| − | === 5.01T, 90deg @ 2.257:===
| + | |
| − | Do A, move sieve in, do B and C(8 points), refill LHe do D.
| + | |
| − | When finish: Turn off target field; Drain LHe, move sieve out.
| + | |
| − | | + | |
| − | === 5T 0deg @ 2.254 GeV:===
| + | |
| − | | + | |
| − | Here is the optics plan for 2.254GeV with 5T and 0 deg target field.
| + | |
| − | Before doing optics, beam center and slow raster size have to be determined.
| + | |
| − |
| + | |
| − | '''Sieve in , no rasters
| + | |
| − | 0. Drain out LHe, LHRS starts at 0% and right HRS start at 4%:
| + | |
| − | Take data with C12 during the drain out. Turn on the microwave to speed
| + | |
| − | up if possible (30~40 minutes)
| + | |
| − |
| + | |
| − | 1. Delta scan: C12, sieve in , no raster (3 hours) (1Mx2 each)
| + | |
| − | Left HRS: -4%, -3%, -2%, -1%, 0%, 1%, 2%, 3%, 4%
| + | |
| − | Right HRS: 4% (Right septum I<=920A, so can only go to 4%.)
| + | |
| − | (-4%, -1% and +3% can be ignored if running out of time)
| + | |
| − | NOTE: if possible, do 3% for right arm, which is 930A. When right arm finish,
| + | |
| − | set right septum at about 900A or lower to avoid tripping.
| + | |
| − |
| + | |
| − | Left HRS: move target to CH2, do pointing at -2%, 0%, 2% (2Mx2 for each setting)
| + | |
| − |
| + | |
| − | **Ramp left dipole back to 0% when finish. (10 minutes)
| + | |
| − |
| + | |
| − | 2. Beam position scan: C12, delta=0; sieve in, slow raster only, (40 minutes)
| + | |
| − | Config the slow raster to jump in the following way:
| + | |
| − | 1)between (x=-5, y=-5) and (5,5)
| + | |
| − | 2)between x=0, y=+/-5
| + | |
| − | 3)between x=+/-5, y=0
| + | |
| − |
| + | |
| − | 3. Acceptance calibration, part 1: C12, sieve in, delta=0 (10 minutes)
| + | |
| − | 1) only fast raster on (1Mx2)
| + | |
| − | 2) both rasters on (1Mx2)
| + | |
| − |
| + | |
| − | 4. Pointing(done with delta scan, 3 points): CH2, sieve in ,delta=0%, +/-2%, no rasters (30 minutes)
| + | |
| − | Take data till the H peak of a normal sieve hole can be fit.
| + | |
| − |
| + | |
| − | **Escorted access to move sieve out when finish (30 minutes) (1Mx2 each)
| + | |
| − | 5. Acceptance calibration, part2: C12, sieve out, delta=0 (20 minutes)
| + | |
| − | 1) no rasters
| + | |
| − | Move to CH2 to do a run for pointing cross check
| + | |
| − | 2) only fast raster
| + | |
| − | 3) both rasters
| + | |
| − |
| + | |
| − |
| + | |
| − | Estimated time: 7 hours
| + | |
| − |
| + | |
| − | At the end of the optics, refill LHe, change to the 1st production point,
| + | |
| − | start dilution runs then polarize NH3 target.
| + | |
| − | | + | |
| − | === 2.5T, 90deg @ 1.159:===
| + | |
| − | '''Do A, move sieve in, do B and C(8 points), refill LHe do D.
| + | |
| − | '''When finish: Ramp field up to 5.01T; Drain LHe out
| + | |
| − |
| + | |
| − |
| + | |
| − | Here is the optics plan for 1.1GeV with 2.5T at 90 degrees target field.
| + | |
| − | Before doing optics, beam center and slow raster size have to be determined.
| + | |
| − |
| + | |
| − | No LHe, LHRS starts at -4% and right HRS start at -3.5%:
| + | |
| − |
| + | |
| − | 1. Delta scan: C12, sieve in , no raster (4 hours)
| + | |
| − | Left HRS: -4%, -3%, -2%, -1%, 0%, 1%, 2%, 3%, 4%
| + | |
| − | Right HRS: -3.5% -2%, 0%, 2%, 3.5%
| + | |
| − |
| + | |
| − | NOTE: if running out of time, we will skip 3.5% in right arm
| + | |
| − | and 1%, 3% at left arm. This can save about 1 hours.
| + | |
| − |
| + | |
| − | **Ramp dipoles back to 0% when finish. (40 minutes)
| + | |
| − |
| + | |
| − | 2. Beam position scan: C12, delta=0; sieve in, slow raster only, (40 minutes)
| + | |
| − | Config the slow raster to jump in the following way:
| + | |
| − | 1)between (x=-5, y=-5) and (5,5)
| + | |
| − | 2)between x=0, y=+/-5
| + | |
| − | 3)between x=+/-5, y=0
| + | |
| − |
| + | |
| − |
| + | |
| − | 3. Acceptance calibration, part 1: C12, sieve in, delta=0 (10 minutes)
| + | |
| − | 1) both rasters on
| + | |
| − |
| + | |
| − | 4. Pointing: CH2, sieve in ,delta=0, no rasters (30 minutes)
| + | |
| − | Take data till the H peak of a normal sieve hole can be fit.
| + | |
| − |
| + | |
| − | **Escorted access to move sieve out when finish (30 minutes)
| + | |
| − | 5. Acceptance calibration, part2: C12, sieve out, delta=0 (20 minutes)
| + | |
| − | 1) no rasters
| + | |
| − | 2) both rasters
| + | |
| − |
| + | |
| − |
| + | |
| − | Estimated time: 7 hours
| + | |
| − |
| + | |
| − | At the end of the optics, refill LHe, change to the 1st production point,
| + | |
| − | start dilution runs then polarize NH3 target.
| + | |
| − | | + | |
| − | === 5.01T, 6deg @ 1.159:===
| + | |
| − |
| + | |
| − | '''Here is the optics plan for gep at 1.15765 GeV beam energy:
| + | |
| − | '''P0=1.1571
| + | |
| − |
| + | |
| − | '''T1_rate=5kHz on 100-mil-C12 target, with 50 nA 1.15765 GeV beam, sieve in, No LHe
| + | |
| − |
| + | |
| − | Sieve IN,
| + | |
| − | If rasters are used, the fast raster is 2x2 and slow raster is 2 cm (or same as production runs):
| + | |
| − |
| + | |
| − | target configuration number of events or beam time
| + | |
| − | C12 Sieve IN, No rasters 2 x 1M (10 minutes)
| + | |
| − | C12 Sieve IN, Both rasters 2 x 1M (10 minutes)
| + | |
| − | NH3 Sieve IN, Both rasters 3 x 7M (about 70 minutes, which will give
| + | |
| − | about 400 events when cut to 1x1 beam size)
| + | |
| − |
| + | |
| − | **Escorted access to move sieve out (30 min)
| + | |
| − |
| + | |
| − | C12 Sieve out, both rasters 30 minutes(about 10 M events for each
| + | |
| − | arm, good for dilution)
| + | |
| − | |
| + | |
| − | '''Estimated time= 3 hours.
| + | |
| − | | + | |
| − | ==links==
| + | |
| − | | + | |
| − | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/g2p_optics_plan.pdf Overall G2P|GEP optics plan]
| + | |
| | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_0T_optics_runplan.pdf 2.253GeV_0T_optics_runplan] | | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_0T_optics_runplan.pdf 2.253GeV_0T_optics_runplan] |
| | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_2.5T_90deg_optics_runplan.pdf 2.253GeV_2.5T_90deg_optics_runplan] | | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_2.5T_90deg_optics_runplan.pdf 2.253GeV_2.5T_90deg_optics_runplan] |
| − | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_5.0T_6deg_optics_runplan.pdf 2.253GeV_5.0T_6deg_optics_runplan] | + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_2.5T_90deg_optics_runplan_newRseptum.pdf 2.253GeV_2.5T_90deg_optics_runplan (403216)] |
| − | | + | |
| | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/1.706GeV_2.5T_90deg_optics_runplan.pdf 1.706GeV_2.5T_90deg_optics_runplan] | | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/1.706GeV_2.5T_90deg_optics_runplan.pdf 1.706GeV_2.5T_90deg_optics_runplan] |
| − | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/1.706GeV_5.0T_6deg_optics_runplan.pdf 1.706GeV_5.0T_6deg_optics_runplan] | + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_2.5T_90deg_optics_runplan.pdf 1.159GeV_2.5T_90deg_optics_runplan] |
| | | | |
| | + | ''[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final more_details...] |
| | | | |
| − | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_2.5T_90deg_optics_runplan.pdf 1.159GeV_2.5T_90deg_optics_runplan] | + | ==Run List== |
| | + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/chao/optics/OpticsSummary.pdf Optics run list summary] |
| | + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/chao/optics/OpticsRunTable.xlsx Optics run list (details)] |
| | + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/chao/optics/list.dat Optics run list (run #)] |
| | | | |
| − | '''With new right septum
| + | ==Calibration Results== |
| − | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final/2.253GeV_2.5T_90deg_optics_runplan_newRseptum.pdf 2.253GeV_2.5T_90deg_optics_runplan_new_right_septum] | + | *[[LHRS 2.254GeV 2.5T Transverse 484816]] |
| | + | *[[LHRS 2.254GeV 2.5T Transverse 403216]] |
| | + | *[[LHRS 1.706GeV 2.5T Transverse 400016]] |
| | + | *[[LHRS 1.158GeV 2.5T Transverse 400016]] |
| | + | *[[LHRS 2.254GeV 5.0T Longitudinal 400016]] |
| | + | *[[RHRS 2.254GeV 2.5T Transverse 484816]] |
| | + | *[[RHRS 2.254GeV 2.5T Transverse 403216]] |
| | + | *[[RHRS 1.706GeV 2.5T Transverse 400016]] |
| | + | *[[RHRS 1.158GeV 2.5T Transverse 400016]] |
| | | | |
| − | '''[http://hallaweb.jlab.org/experiment/g2p/collaborators/jixie/20120226_Optics_Final more_details...]
| + | ==Links== |
| | + | Target field mapping: |
| | + | *[http://hallaweb.jlab.org/experiment/g2p/collaborators/chao/technotes/Chao_TechNote_TargetField.pdf Results] |
| | | | |
| − | ----
| + | Suggestions of the run plan: |
| − | For commissioning:
| + | |
| | *[https://hallaweb.jlab.org/wiki/index.php/G2p_optics_procedure Procedure suggested by Vince] | | *[https://hallaweb.jlab.org/wiki/index.php/G2p_optics_procedure Procedure suggested by Vince] |
| | *[https://hallaweb.jlab.org/wiki/index.php/G2p_other_optics_plan Procedure suggested by Jin] | | *[https://hallaweb.jlab.org/wiki/index.php/G2p_other_optics_plan Procedure suggested by Jin] |
