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.

Beam Checkout with Superharps and Beam Position Monitors

  • 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

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

Fine tune SHMS with Carbon 4.4 inelastic

  • Experts: M. Jones, H. Szumila
  • Expected time: 1 hour
  • Goal: Fine tune the SHMS quads and dipole with carbon 4.4 inelastic
  • Conditions:
beam current: 3 μA
fast raster: off
target: 0.5% carbon
SHMS collimator: CENTERED SIEVE
SHMS trigger: SCIN 3/4
SHMS angle/momentum 13.5 deg, -2.105 GeV/c
  • SHMS Run Plan: pdf

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, 2.1 GeV/c
  • Run Plan:

SHMS/HMS Delta Matrix calibration

  • Experts: M. Jones, H. Smuzila
  • Expected time: 12 hour
  • Goal: To
  • 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 13.5 deg, various
SHMS angle/momentum 13.5 deg, various
  • Run Plan:
  • Try with different vertical and horizontal beam positions.


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: 1x1mm
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.
  • Conditions:
beam current: 5-60 μA
fast raster: 1x1mm
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
  • Run Plan:

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: 0.5% carbon, optics targets
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 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

Superharp Scan

  • Experts: Mark Jones
  • Expected time: 1/2 hour
  • Goal: Verify beam spot size
  • Conditions:
beam current: 5 μA
fast raster: off
target: none
  • 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.

SHMS Tune Verification

  • Experts:
  • Expected time:
  • Goal:
  • 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 15. deg, -3.0 GeV/c
SHMS angle/momentum 15. deg, -3.0 GeV/c


Detailed Detector Checkout

  • Experts:
  • Expected time: ? hour
  • Goal:
  • 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 15 deg, -3.0 GeV/c
SHMS angle/momentum 15 deg, -3.0 GeV/c

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

Aerogel

  • SHMS Run plan:

Set Discriminator Thresholds for PID Trigger

  • Experts:
  • Expected time:
  • Goal:
  • 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 15. deg, -3.0 GeV/c
SHMS angle/momentum 15. deg, -3.0 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

BCM Calibration

  • Experts: Dave Mack
  • Expected time: 2 hours
  • 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
  • Run Plan:

Target boiling study

  • Experts: Eric Christy
  • Expected time: 3 hours
  • Goal: Measure target boiling
  • Conditions: Prescale to 2 kHz
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
  • Run Plan:

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 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

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).

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°.

HMS/SHMS Angle and Position Matrix Optimization

  • Experts:
  • Expected time:
  • Goal:
  • Conditions:
beam current: 20-50 μA
fast raster: off
target: optics targets
HMS/SHMS collimator: Sieve , Centered Sieve
HMS/SHMS trigger: ,
HMS angle/momentum 25. deg, -3.0 GeV/c
SHMS angle/momentum 25. deg, -3.0 GeV/c

HMS Angle and position matrix optimization for large ytgt

  • Experts:
  • Expected time:
  • Goal: Calibrate HMS ytgt, yptar and xptar for 10cm target.
  • Conditions:
beam current: 20-50 μA
fast raster: off
target: optics targets
HMS Sieve , Centered Sieve
HMS trigger: ,
HMS angle/momentum 50. deg, -2.0 GeV/c
  • Run Plan:

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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