Commissioning Plan 2017

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HMS/SHMS Magnet Cycling Procedures

HMS

  • Set DIPOLE by NMR coming DOWN 200 A above.
  • Set QUADS by initially setting to a current of 200 A above the set currents (or the maximum current of 1100 A for Q1 if set current + 200 > 1100), and then coming DOWN.
  • See instructions and limits (do not exceed these limits!!!)

SHMS

  • General principal: A magnet will be “on loop” if it has been taken to Imax (11 GeV) and stays on the descending branch of the hysteresis loop. Otherwise it is "off loop"
  • Cycle procedure: Go to Imax and descend to target current.
  • See instructions and limits (do not exceed these limits!!!)
  • Action logic table
Status/Action Magnet status is “on loop” Magnet status is “off loop”
Increasing abs(p) at this polarity Cycle Cycle
Decreasing abs(p) at this polarity Descend to target current Cycle
Changing polarity Set to 0 current, switch polarity, cycle Set to 0 current, switch polarity, cycle

Beam energy of 2.2 GeV

Initial conditions

  • HMS/SHMS angle surveys.
  • Beamline BPM and Harp surveys. Check offsets in MCC database.
  • HMS/SHMS Conditions:
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 25 deg, -1.6 GeV/c
SHMS angle/momentum 25 deg, -1.6 GeV/c
  • Run 2.2 GeV beam four 4 days and switch to 3 pass.
  • Run 6.4 GeV beam and switch to 5 pass.
  • Run 10.6 GeV beam.

Completed

Center beam on C-hole target

  • Experts:
  • Expected time: 1 hour
  • Goal: Center beam on carbon hole target
  • Conditions:
beam current: 5 μA
fast raster: 3x3mm
target: carbon hole
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 25 deg, -1.6 GeV/c
SHMS angle/momentum 25 deg, -1.6 GeV/c

Initial HMS/SHMS Detector Checkout

  • SHMS/HMS optics experts:
  • HMS DC experts:
  • Expected time: 1 hour
  • Goal: Initial checkout of the HMS/SHMS detectors. Working well enough for carbon elastics data and initial checkout of the SHMS/HMS tunes.
  • Conditions:
beam current: 5-20 μA
fast raster: off
target: 0.5% carbon
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4,SCIN 3/4
HMS angle/momentum 25 deg, -1.6 GeV/c
SHMS angle/momentum 25 deg, -1.6 GeV/c

Wire Chamber

  • SHMS Run plan:
  • HMS Run plan:

Shower Counter

Scintillator

  • SHMS Run plan:
  • HMS Run plan:

Cerenkov

  • SHMS Heavy Gas Cherenkov: Run Plan
  • HMS Run plan:

Aerogel

Initial checkout of SHMS/HMS tune

  • Experts: M Jones, H. Szumila
  • Expected time: 1 hour
  • Goal: Check tune with sieve
  • Conditions:
beam current: 5-20 μA
fast raster: off
target: 0.5% carbon
HMS/SHMS collimator: SIEVE , CENTERED SIEVE
HMS/SHMS trigger: SCIN 3/4,SCIN 3/4
HMS angle/momentum 25 deg, -1.6 GeV/c
SHMS angle/momentum 25 deg, -1.6 GeV/c

Beam Energy Measurement

  • Experts: MCC,Mark Jones, Dave Mack
  • Expected time: 2 hours
  • Goal: Measure beam energy for carbon elastics.
  • Conditions:
beam current: 5uA
fast raster: off
target: none

HMS delta scan with LH2

  • Expected time: 5 hour
  • Goal: Checkout HMS delta matrix. Have baseline for comparison at higher HMS central momentum
  • Conditions:
beam current: 3 μA
fast raster: 1x1cm
target: 10cm LH2
HMS collimator: Pion
HMS trigger: SCIN 3/4
HMS angle/momentum 13.5 deg, -2.309 to -1.889 GeV/c
  • HMS Run Plan:pdf

Inelastic on 1H at 21.95 degrees

  • Experts: S. Malace
  • Expected Time: 4 hour
  • Goal : Data to compare to known cross sections
  • Conditions: Prescale to 2 kHz
beam current (uA): 5
fast raster: 3x3
target: 10cm LH2, 10cm aluminum
HMS collimator: PION
HMS trigger: SCIN 3/4
HMS angle/momentum 21.95 / given in table
  • Run Plan:
  Eprime         suggested time (Hydrogen)   suggested time (10 cm Aluminum dummy)

  1.6162              20 min                         10 min
  • Do target boiling and BCM calibration plans listed below. Then continue with the program
 Eprime         suggested time (Hydrogen)   suggested time (10 cm Aluminum dummy)

  1.3773              20 min                         10 min

  1.2000              20 min                         10 min

  1.0500              20 min                         10 min

  0.9000              20 min                         10 min

Target boiling study

  • Experts: Eric Christy
  • Expected time: 1.5 hours
  • Goal: Measure target boiling.
  • Conditions: Prescale to 2 kHz, cycle magnets. Each current a ten minute run.
beam current (uA): 1, 3, 5, 7, 10, 12, 15, 17, 20
fast raster: 3x3mm
target: 10cm LH2, 0.5% Carbon
HMS collimator: PION
HMS trigger: SCIN 3/4
HMS angle/momentum 21.95 deg, -1.6162 GeV/c

BCM Calibration

  • Experts: Eric Christy
  • Expected time: 1 hour
  • Goal: BCM Calibration data including low currents to look at non-linearities
  • Conditions: Slit closed for zero current
  • Procedure: Ask MCC to ramp up and then down covering the currents below with alternating on/off and 2 minutes at each current
beam currents (uA): 0, 1, 0, 3, 0, 5, 0, 7, 0, 10, 0, 12, 0, 15, 0, 17, 0, 20
fast raster: off
target: 0.5% Carbon
HMS angle 21.95
HMS momentum 1.2

Inelastic on 1H at 42.5 degrees

  • Experts: S. Malace
  • Expected Time: 9 hours
  • Goal : Data to compare to known cross sections. Carbon target for pointing at the first momentum.
  • Conditions: Prescale to 2 kHz
beam current (uA): 10
fast raster: 3x3
target: 10cm LH2, 10cm dummy, 0.5% carbon
HMS collimator: PION
HMS trigger: SCIN 3/4
HMS angle/momentum 42.5 / given in table
  • Run Plan:
  Eprime        suggested time (Hydrogen)   suggested time (10 cm Aluminum dummy)       Carbon

  1.2000              1 h                         10 min                                   10 min
  
  1.0400              1 h                         10 min

  0.9200              1 h                         10 min

  0.8000              1 h                         10 min

  0.7000              1 h                         10 min

  0.6000              1 h                         10 min

SHMS Delta checkout with Carbon Elastic ground state

  • Experts: M. Jones, H. Smuzila
  • Expected time: 3 hour
  • Goal: To take data with carbon elastic ground state and first excited state to test delta resolution.
  • Conditions:
beam current: 5-20 μA
fast raster: off
target: 0.5% carbon
SHMS collimator: CENTERED SIEVE
SHMS trigger: SCIN 3/4
SHMS angle/momentum 7.5 deg, 2.214 GeV/c
  • Run Plan:

HMS Trigger Efficiency study

  • Experts: E. Pooser
  • Expected Time:
  • Goal : To test sensitivity to threshold in the 3/4 and other triggers.
  • Need to gain match the HMS Cerenkov according to Hamlet's suggestion elog entry
  • Conditions: Parasitic with the HMS Angle/Position Optics Matrix
  • Run Plan:

SHMS/HMS Delta Matrix calibration

  • Experts: M. Jones, H. Smuzila
  • Expected time: 12 hour
  • Goal: To
  • Conditions:
beam current: 5-10 μA (whatever is stable)
fast raster: off
target: 0.5% carbon
SHMS collimator: Collimator
SHMS trigger: SCIN 3/4
SHMS angle/momentum 7.5 deg, various momentum
  • Run Plan: Scan delta in 2% steps.
  • Try with different vertical and horizontal beam positions.

SHMS Quartz bar gain matching

  • Experts: S. Malace
  • Expected Time: 1 hour
  • Goal : Gain match quartz bars.
  • Conditions:
beam current: 5-10 uA (or more if easily available)
fast raster: 3x3
target: 10 cm LH2
SHMS Collimator
SHMS trigger: 3/4 scin
SHMS angle/momentum 25. deg, -1.4 GeV/c
  • Run Plan:

HMS Angle and position matrix optimization for large ytgt (partially completed)

  • Experts: M Jones, H Szumila
  • Expected time:
  • Goal: Calibrate HMS ytgt, yptar and xptar for 10cm target.
  • Conditions:
beam current: 10 uA (or more if easily available)
fast raster: off
target: Optics #1 target (0,+/-10cm foils) and Optics #2 target (+/-5cm foils)
HMS Sieve
HMS trigger: 3/4 scin
HMS angle/momentum 30. deg, -1.3 GeV/c
  • Run Plan:
    • Cycle magnets. Insert sieve.
    • MCC will ask for ion chamber calibration on optics #1 and optics #2 target.
    • Insert optics #1 target. Take data for 1 hour.
    • Insert optics #2 target. Take data for 1 hour.


1H(eep) Coincidence SHMS (proton) and HMS (electron)

  • Experts: D. Dutta, S. Basnet, A. Karki
  • Expected time: 1 hour
  • Goal: Setup coincidence timimg. Kinematic for HEEPcheck. Measure cross section.
  • Conditions:
beam current: 5-60 μA
fast raster: 3x3mm
target: 10cm LH2, 10cm dummy
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 65.1 deg, -0.936 GeV/c
SHMS angle/momentum 25.0 deg, +2.012 GeV/c
  • Run Plan:

1H(eep) Coincidence SHMS (electron) and HMS (proton)

  • Experts: D. Dutta, S. Basnet, A. Karki
  • Expected time: 1 hour
  • Goal: Setup coincidence timimg. Kinematic for HEEPcheck. Measure cross section.
  • Setting 1:
beam current: 5-10 μA
fast raster: 3x3mm
target: 10cm LH2, 10cm dummy
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 53.3 deg, +0.957 GeV/c
SHMS angle/momentum 25.0 deg, -1.816 GeV/c
  • Setting 2: Here, we will do a mini-delta-scan in the SHMS to check acceptance.
beam current: 5-10 μA
fast raster: 3x3mm
target: 10cm LH2, 10cm dummy
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 47.9 deg, +1.136 GeV/c
SHMS angle/momentum (a) 30.0 deg, -1.816 GeV/c (-7%)
SHMS angle/momentum (b) 30.0 deg, -1.686 GeV/c (0%)
SHMS angle/momentum (c) 30.0 deg, -1.555 GeV/c (8.5)%

SHMS Angle and Position Matrix Optimization

  • Experts:
  • Expected time: 2 hour
  • Goal: SHMS angle and position matrix optimization
  • Conditions:
beam current: 5-20 μA
fast raster: off
target: optics target 1, optics target 2
HMS/SHMS collimator: Sieve , Centered Sieve
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 30. deg, -1.3 GeV/c
SHMS angle/momentum 25 deg, -1.4 GeV/c
  • Run Plan:

Beam energy of 6.4 GeV

Initial conditions

  • HMS/SHMS Conditions:
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 15 deg, -3.0 GeV/c
SHMS angle/momentum 15 deg, -3.0 GeV/c

Beam Checkout with Superharps and Beam Position Monitors (3 hours)

  • Experts: Mark Jones, Deb Biswas, Thir Guatam
  • Expected time: 3 hours
  • Goals: Initial measurement of beam spot size. Followed by calibration of girder BPMs at 5,30 and 60uA. Measure raster size with superharps.
  • Conditions:
beam current: 5,30 and 60 μA
fast raster: off
target: none
  • Runplan: pdf file
  • Ask MCC to do superharp scan with superharps IHA3H07A and IHA3H07B and put entry in ELOG. Record the 3 BPMs positions (3H07A,3H07B,3H07C) during scan.
    • Want beam spot with sigma_x and sigma_y below 200 um ( beam pass 1-4) and below 300 um for beam pass 5.
  • Verify Girder BPM position to Harp positions.

Center beam on C-hole target ( 1 hour)

  • Experts:
  • Expected time: 1 hour
  • Goal: Center beam on carbon hole target
  • Conditions:
beam current: 5 μA
fast raster: 3x3mm
target: carbon hole
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 15 deg, -3.0 GeV/c
SHMS angle/momentum 15 deg, -3.0 GeV/c
  • Run plan: Procedure
  • Once hole is found, take 20 minutes run at 20uA for good statistics

Detailed Detector Checkout ( 1 hour)

  • Experts:
  • Expected time: 1 hour
  • Goal:
  • Conditions:
beam current: 20 μA
fast raster: off
target: 0.5% carbon
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4,SCIN 3/4
HMS angle/momentum 15 deg, -3.0 GeV/c
SHMS angle/momentum 15 deg, -3.0 GeV/c

Trigger

  • Set HMS/SHMS trigger threshold for PID trigger section to 10 mV.
  • Software cuts can be placed on trigger ADC data to study efficiencies.

Wire Chamber

  • SHMS Run plan:
  • HMS Run plan:

Shower Counter Calibration Run

  • SHMS Run plan:
  • HMS Run plan:

Scintillator

  • SHMS Run plan:
  • HMS Run plan:

Cerenkov

  • SHMS Heavy Gas Cherenkov: calibration plan
  • SHMS Noble Gas Run Plan:
  • HMS Run plan:

Aerogel

  • SHMS Run plan:

HMS/SHMS Angle and Position Matrix Optimization (5 hours)

  • Experts:
  • Expected time: 4 hours.
  • Goal:
  • Conditions:
beam current: 20 μA ( more is better)
fast raster: off
target: optics targets
HMS/SHMS collimator: Sieve , Centered/Shifted Sieve
HMS/SHMS trigger: 3/4 scin, 3/4 scin
HMS angle/momentum 15,22. deg, -3.5 GeV/c
SHMS angle/momentum 15.,22. deg, -3.0 GeV/c

Large Ytar: HMS/SHMS Angle and Position Matrix Optimization (9 hours)

  • Experts:
  • Expected time: 4 hours.
  • Goal:
  • Conditions:
beam current: >20 μA
fast raster: off
target: optics targets
HMS/SHMS collimator: Sieve , Centered Sieve
HMS/SHMS trigger: 3/4 scin, 3/4 scin
HMS angle/momentum 30. deg, -2.0 GeV/c
SHMS angle/momentum 30. deg, -2.0 GeV/c

Defocused Tune for SHMS

  • Experts: Hamlet
  • Expected time: 1 hr
  • Goal: Have a wider y_fp to calibrate the calorimeter over regions that are not usually hit with the standard hourglass tune.
  • Conditions:
beam current: 5-20 μA
fast raster: 2x2mm
target: 10cm LH2
SHMS collimator: Collimator
SHMS trigger: SCIN 3/4
SHMS angle/momentum 25. deg, -3.0 GeV/c, Q2 at 1.2 times normal

Beam Energy Measurement

  • Experts: MCC,Mark Jones, Dave Mack
  • Expected time: ? hours
  • Goal: Measure beam energy for carbon elastics.
  • Conditions:
beam current: 5uA
fast raster: off
target: none
  • MCC procedure


Coincidence Checkout [16 hrs]

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 20-50 μA
fast raster: 1x1mm2
target: 10cm LH2
HMS/SHMS collimator: PION/SIEVE , COLLIMATOR/CENTERED SIEVE
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 27.5 deg, -3.609 GeV/c
SHMS angle/momentum 27.5 deg, +3.609 GeV/c
  • We will take a set of 1H(e,e’p) measurements to check the angle and dp/p offsets for the spectrometers. Use a current of 50 μA if possible. Rotate both HMS and SHMS to -27.5° again (or keep them there if already at that angle). Keep both HMS and SHMS at a central momentum of -3.609 GeV/c. First use the sieve slit on the SHMS side and the central Carbon optics target. Use the Particle Id. trigger, and measure about 2K singles in SHMS (that should take about one hour). Now install the 10 cm hydrogen target and measure about 2K singles in SHMS (that is again about one hour). Now take a coincidence spectrum in the same situation, again a measurement of about one hour. Remove the sieve slit on the SHMS side and use the large collimator. Measure a coincidence spectrum for one hour (rate should be 4 Hz, so this will get >10K statistics). Now install the sieve slit on the HMS side and measure another coincidence spectrum for a few hours (a few K statistics).

Target boiling study (1.5 hours)

  • Experts: Eric Christy
  • Expected time: 1.5 hours
  • Goal: Measure target boiling.
  • Conditions: Prescale to 2 kHz, cycle magnets. Each current a ten minute run.
beam current (uA): 1, 3, 5, 7, 10, 12, 15, 17, 20 , max current
fast raster: 3x3mm
target: 10cm LH2, 0.5% Carbon
HMS collimator: PION
HMS trigger: SCIN 3/4
HMS angle/momentum

BCM Calibration ( 1 hour)

  • Experts: Eric Christy
  • Expected time: 1 hour
  • Goal: BCM Calibration data including low currents to look at non-linearities
  • Conditions: Slit closed for zero current
  • Procedure: Ask MCC to ramp up and then down covering the currents below with alternating on/off and 2 minutes at each current
beam currents (uA): 0, 1, 0, 3, 0, 5, 0, 7, 0, 10, 0, 12, 0, 15, 0, 17, 0, max current
fast raster: off
target: 0.5% Carbon
HMS angle
HMS momentum

1H or 12C(eep) [3 hr]

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 20-50 μA
fast raster: 1x1mm2
target: 3% carbon, 10cm LH2
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 27.5 deg, -3.609 GeV/c
SHMS angle/momentum 27.5 deg, +3.609 GeV/c


1H or 12C(e, e’ π) [2 hr]

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 20-50 μA
fast raster: 1x1mm2
target: 3% carbon, 10cm LH2
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 16.8 deg, -3.8 GeV/c
SHMS angle/momentum 20.0 deg, +2.7 GeV/c

1H(e’K) and 1H(e, e’K) [3 hr]

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 20-50 μA
fast raster: 1x1mm2
target: 10cm LH2
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 25.0 deg, -2.6 GeV/c
SHMS angle/momentum 15.0 deg, +3.6 GeV/c

Elastic p(ep) Checkout

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 20-50 μA
fast raster: 1x1mm2
target: 10cm LH2
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum 27.5 deg, -3.609 GeV/c
SHMS angle/momentum 27.5 deg, +3.609 GeV/c
  • Take runs to acquire roughly 10K events for HMS (use the large pion collimator!) at angles of 27.5°, 28.8°, 30.1°, 24.9°, and 26.2°. For SHMS at identical angles but also at angles of 31.8°, 33.5°, 35.2° and 23.2°. Roughly, at the central setting you need 45 minutes to acquire 10K statistics, and less at the lower angles, but perhaps 1.5 hour at 30.1°, and up to 5 hours at the largest SHMS angle of 35.2°.

Use GEM to check out SHMS optics

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: <1 μA
fast raster: off
target: optics targets
SHMS collimator: Collimator
SHMS trigger: 3/4 Scin + Cer
SHMS angle/momentum 25. deg, -2.0 GeV/c
  • Run Plan:

Check spectrometer pointing

  • Experts:
  • Expected time:
  • Goal: Measure the HMS/SHMS spectrometer pointing
  • Conditions:
beam current: 20-50 μA
fast raster: off
target: 3% carbon
HMS/SHMS collimator: Sieve, Centered sieve
HMS/SHMS trigger: ,
HMS angle/momentum 12.-60 deg, -3.0 GeV/c
SHMS angle/momentum 7.5-40 deg, -3.0 GeV/c

Beam energy of 8.8 GeV

Beam Energy Measurement

  • Experts: MCC,Mark Jones, Dave Mack
  • Expected time: ? hours
  • Goal: Measure beam energy for carbon elastics.
  • Conditions:
beam current: 5uA
fast raster: off
target: none
  • MCC procedure

SHMS Tune Verification

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 5-20 μA
fast raster: off
target: 3% carbon
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum
SHMS angle/momentum

1H(eep)

Beam energy of 10.6 GeV

Beam Energy Measurement

  • Experts: MCC,Mark Jones, Dave Mack
  • Expected time: ? hours
  • Goal: Measure beam energy for carbon elastics.
  • Conditions:
beam current: 5uA
fast raster: off
target: none
  • MCC procedure

1H(eep)

SHMS Tune Verification

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 5-20 μA
fast raster: off
target: 3% carbon
HMS/SHMS collimator: PION , COLLIMATOR
HMS/SHMS trigger: SCIN 3/4, SCIN 3/4
HMS angle/momentum
SHMS angle/momentum
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