Difference between revisions of "KPP Run Plan"

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(New page: = 12 GeV Hall C Key Performance Parameter Run Plan (Draft) = The primary goal of this runplan is to satisfy the 5 'KPP' items listed below. Where practical, these goals will be accomplis...)
 
 
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= 12 GeV Hall C Key Performance Parameter Run Plan (Draft) =
 
= 12 GeV Hall C Key Performance Parameter Run Plan (Draft) =
  
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The primary goal of this runplan is to satisfy the 5 'KPP' items listed below.
+
The primary goal of this runplan is to satisfy the 5 '''KPP''' items listed below in minimal time. With that focus in mind, where practical, these goals will be accomplished as immediate side effects of broader commissioning studies to improve overall efficiency.
−
 
 
−
Where practical, these goals will be accomplished as immediate side effects of
 
−
broader commissioning studies.
 
  
 
== KPP Demonstration Items ==
 
== KPP Demonstration Items ==
−
# Detector running for 8 hours recording data from all subsystems.
+
# Detector running for 8 hours recording data from all subsystems.  
−
# Screenshots of beam status and/or accelerator e-log entries demonstrating electron beam current and energy.
+
## Part of: [[KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs]],
−
# Data showing relative timing of trigger, tracking, and particle identification in detector sybsystems.
+
## and [[KPP Run Plan#Initial Beam Steer Up]]
−
# Firgures demonstrating charged-particle tyracks from position-sensitive detectors.
+
# Screenshots of beam status and/or accelerator e-log entries demonstrating electron beam current and energy.  
−
# Particle identification plots using segnals from calorimetry and Cerenkov detectors.
+
## Part of: [[KPP Run Plan#Initial Beam Steer Up]],
 +
# Data showing relative timing of trigger, tracking, and particle identification in detector sybsystems.  
 +
## Part of: [[KPP Run Plan#Target/Beam centering, Raster calibration]],
 +
## and [[KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs]]
 +
# Figures demonstrating charged-particle tracks from position-sensitive detectors.  
 +
## Part of: [[KPP Run Plan#Target/Beam centering, Raster calibration]],
 +
## and [[KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs]]
 +
# Particle identification plots using signals from calorimetry and Cerenkov detectors.  
 +
## Part of: [[KPP Run Plan#Target/Beam centering, Raster calibration]],
 +
## and [[KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs]]
  
 
== Initial Beam Settings ==
 
== Initial Beam Settings ==
Line 21: Line 27:
  
 
== Initial Spectrometer Settings ==
 
== Initial Spectrometer Settings ==
−
=== SHMS ===
+
=== SHMS Configuration ===
 
     Angle:  15        (>  7.5 degrees[*] -- Beamline Config-2)
 
     Angle:  15        (>  7.5 degrees[*] -- Beamline Config-2)
−
     Mom:    6 GeV/c    (nominal, not really important; lower = more rate)
+
     Mom:    -3.0 GeV/c    (nominal, not really important; lower = more rate)
−
 
 
−
===  HMS ===
 
−
    Angle:  *TBD* (> 10.5 degrees -- Beamline Config-2)
 
−
    Mom:    *TBD*
 
  
 +
===  HMS Configuration ===
 +
    Angle:  15 deg (> 10.5 degrees -- Beamline Config-2)
 +
    Mom:    -3.0 GeV/c
  
 
=== Notes ===
 
=== Notes ===
Line 40: Line 45:
  
 
== Initial Beam Steer-up ==
 
== Initial Beam Steer-up ==
−
   Goals:
+
   '''NOTE: This is an MCC driven procedure.  My current understanding (March 1, 2017) is that the complete ATLis below will ''NOT'' be executed.  Instead a more limited steer-up procedure will be used that is better tuned to the limited goals of the Spring 2017 Run.'''
 +
 
 +
  ''' Goals '''
 
     NOTE: ''' NOTE MCC driven procedure '''
 
     NOTE: ''' NOTE MCC driven procedure '''
−
     * [[KPP_Run_Plan#KPP_Demonstration_Items KPP 2]] Establish beam to Dump with SHMS magnets at production settings.
+
     * [[KPP Run Plan#KPP Demonstration Items|KPP 2]]: Establish beam to Dump with SHMS magnets at production settings.
  
 
   - Beam Current:  Viewer limited (Tune Beam)
 
   - Beam Current:  Viewer limited (Tune Beam)
Line 49: Line 56:
  
 
   Procedure Excerpts (NOTE: See [http://opsweb.acc.jlab.org/CSUEApps/atlis/atlis.php?load=Task&task_id=16570 ATLis 16570] (Jay Benesch) for details)
 
   Procedure Excerpts (NOTE: See [http://opsweb.acc.jlab.org/CSUEApps/atlis/atlis.php?load=Task&task_id=16570 ATLis 16570] (Jay Benesch) for details)
−
   - SHMS magnets:  OFF
+
   - SHMS magnets:  OFF at beginning of procedure
−
     - Eliminate any question of beam steering due to SHMS fringe field during
+
     - Eliminate any question of beam steering due to SHMS fringe field during initial steer-up
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      initial steer-up
 
 
   - MCC will follow their procedure to establish beam to the Hall C dump
 
   - MCC will follow their procedure to establish beam to the Hall C dump
−
   - Hall C will log snapshots of
+
   - Hall C will log snapshots of:
−
     - Beam energy, Beam current, and viewer images (if available) to satisfy
+
     - Beam energy, Beam current, and viewer images (if available) to satisfy [[KPP Run Plan#KPP Demonstration Items|KPP 2]]
−
      KPP 1, 2
 
 
   - With Tune Beam ON, and spot visible on dump viewer:
 
   - With Tune Beam ON, and spot visible on dump viewer:
 
     - Slowly bring up SHMS magnets to operating momentum settings.
 
     - Slowly bring up SHMS magnets to operating momentum settings.
−
     - Monitor spot image on dump viewer for unacceptable beam steering due to
+
     - Monitor spot image on dump viewer for unacceptable beam steering due to SHMS fringe fields.
−
      SHMS fringe fields.
+
     - Snapshot dump viewer images (if available) and SHMS magnet screens with SHMS magnets at operating currents when ramp complete.
−
     - Snapshot dump viewer images (if available) and SHMS magnet screens with
 
−
      SHMS magnets at operating currents when ramp complete.
 
−
 
 
  
 
== Basic Beamline, Raster, Instrumentation checkout ==
 
== Basic Beamline, Raster, Instrumentation checkout ==
 
=== Initial Raster checks ===
 
=== Initial Raster checks ===
−
   Goals:
+
   ''' Goals '''
−
     - Establish beam to be roughly centered in beam pipe by locating it on YAG
+
     - Establish beam to be roughly centered in beam pipe by locating it on YAG viewer just upstream of target.
−
      viewer just upstream of target.
 
 
     - Turn on Raster and verify beam profile expands as expected.
 
     - Turn on Raster and verify beam profile expands as expected.
  
Line 75: Line 76:
 
   - Raster:        Off; 2mm x 2mm
 
   - Raster:        Off; 2mm x 2mm
  
−
   Procedure:
+
   '''Procedure'''
 
   - Insert YAG viewer on Hall C superharp girder
 
   - Insert YAG viewer on Hall C superharp girder
 
     - start with raster off, verify beam spot roughly centered
 
     - start with raster off, verify beam spot roughly centered
Line 83: Line 84:
  
 
=== Harp scans ===
 
=== Harp scans ===
−
   Goals:
+
   ''' Goals '''
 
     - Verify operation of Harp scanners w/ beam.
 
     - Verify operation of Harp scanners w/ beam.
 
     - Establish acceptable beam profile (nominal 100--400um sigma)
 
     - Establish acceptable beam profile (nominal 100--400um sigma)
Line 91: Line 92:
 
   - Raster:        Off
 
   - Raster:        Off
  
−
   Procedure:
+
   '''Procedure'''
 
   - Take Harp swipes for all viewers on Hall C beamline
 
   - Take Harp swipes for all viewers on Hall C beamline
−
     - verify beam profile (nominal 100--400um sigma) on at least one scanner
+
     - verify beam profile (nominal 100--400um sigma) on at least one scanner on Hall C upstream beamline
−
      on Hall C upstream beamline
 
  
  
 
=== Target/Beam centering, Raster calibration ===
 
=== Target/Beam centering, Raster calibration ===
−
   Goals:
+
   ''' Goals '''
 
     - Establish beam position on target.
 
     - Establish beam position on target.
−
     * [KPP 3, 4, 5] Start taking data in S/HMS, offline analysis team will
+
     * [[KPP Run Plan#KPP Demonstration Items|KPP 3, 4, 5]]: Start taking data in S/HMS, offline analysis team will start analyzing data and can begin looking for tracks, initial detector
−
      start analyzing data and can begin looking for tracks, initial detector
 
 
       checkout.
 
       checkout.
  
Line 107: Line 106:
 
   - Target:        BeO, Carbon Hole
 
   - Target:        BeO, Carbon Hole
  
−
   Procedure:
+
   '''Procedure'''
 
   - Note:  DAQs are running and a solid target is in place
 
   - Note:  DAQs are running and a solid target is in place
 
     - Online shift crew will proceed with program below.
 
     - Online shift crew will proceed with program below.
−
     - Offline shift crew will focus on demonstrating KPP 3, 4, 5
+
     - Offline shift crew will focus on demonstrating [[KPP Run Plan#KPP Demonstration Items|KPP 3, 4, 5]]
 
       using these solid target data.
 
       using these solid target data.
  
Line 121: Line 120:
 
     - Log camera snapshot of beam spot on BeO
 
     - Log camera snapshot of beam spot on BeO
  
−
   - Image Carbon Hole target using Raster current pickoffs vs. raw trigger
+
   - Image Carbon Hole target using Raster current pickoffs vs. raw trigger rates in SHMS and/or HMS
−
    rates in SHMS and/or HMS
+
      - NOTE: If there are issues with the raster systems, this step can be skipped provided experts are confident that we know where the beam is on target (ie. good BeO snapshot)
 
       - (NOTE: This does NOT require working spectrometer Optics.)
 
       - (NOTE: This does NOT require working spectrometer Optics.)
 
       - Target:    Carbon Hole
 
       - Target:    Carbon Hole
Line 137: Line 136:
 
         - Adjust beam position
 
         - Adjust beam position
 
         - Run Spot++ to view effect
 
         - Run Spot++ to view effect
−
     - Calibrate raster dimensions against (known) Carbon Hole diameter by
+
     - Calibrate raster dimensions against (known) Carbon Hole diameter by adjusting Raster magnet settings until raster is just covering the carbon hole in the image.
−
      adjusting Raster magnet settings until raster is just covering the
 
−
      carbon hole in the image.
 
−
 
 
  
 
== Begin Detector Checkout and Spectrometer Optics Programs ==
 
== Begin Detector Checkout and Spectrometer Optics Programs ==
−
   Goals:
+
   ''' Goals '''
−
     - [KPP 3, 4, 5] Data taking in SHMS/HMS continues
+
     - [[KPP Run Plan#KPP Demonstration Items|KPP 3, 4, 5]]: Data taking in SHMS/HMS continues
−
       - Analysis team will continue debugging until KPP 3, 4, 5 can be
+
       - Analysis team will continue debugging until [[KPP Run Plan#KPP Demonstration Items|KPP 3, 4, 5]] can be satisfied (if not completed already)
−
        satisfied (if not completed already)
+
     - [[KPP Run Plan#KPP Demonstration Items|KPP 1]]: This program will more than the 3 hours needed to satisfy [[KPP Run Plan#KPP Demonstration Items|KPP 1]]
−
     - [KPP 1] This program will likely run long enough to satisfy KPP 1
 
  
−
   Procedure:
+
   '''Procedure'''
 
     Reference: [https://hallcweb.jlab.org/wiki/index.php/SHMS_Optics_Working_Group Optics & Detector Working Group] (Rolf Ent, Tanya Horn)
 
     Reference: [https://hallcweb.jlab.org/wiki/index.php/SHMS_Optics_Working_Group Optics & Detector Working Group] (Rolf Ent, Tanya Horn)
 
   * Note:  DAQs are running and a solid target is in place
 
   * Note:  DAQs are running and a solid target is in place
 
     - Online shift crew will proceed with the optics program
 
     - Online shift crew will proceed with the optics program
−
     - Offline shift crew will focus on demonstrating KPP 3, 4, 5
+
     - Offline shift crew will focus on demonstrating [[KPP Run Plan#KPP Demonstration Items|KPP 3, 4, 5]] using these solid target data (if not established already).
−
      using these solid target data (if not established already).
+
     - If not established already, the 8 hour clock on running DAQs for [[KPP Run Plan#KPP Demonstration Items|KPP 1]] will be satisfied during this program.
−
     - If not established already, the 8 hour clock on running DAQs for
 
−
      KPP 1 will be satisfied during this program.
 

Latest revision as of 12:43, 1 March 2017

12 GeV Hall C Key Performance Parameter Run Plan (Draft)

The primary goal of this runplan is to satisfy the 5 KPP items listed below in minimal time. With that focus in mind, where practical, these goals will be accomplished as immediate side effects of broader commissioning studies to improve overall efficiency.

KPP Demonstration Items

  1. Detector running for 8 hours recording data from all subsystems.
    1. Part of: KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs,
    2. and KPP Run Plan#Initial Beam Steer Up
  2. Screenshots of beam status and/or accelerator e-log entries demonstrating electron beam current and energy.
    1. Part of: KPP Run Plan#Initial Beam Steer Up,
  3. Data showing relative timing of trigger, tracking, and particle identification in detector sybsystems.
    1. Part of: KPP Run Plan#Target/Beam centering, Raster calibration,
    2. and KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs
  4. Figures demonstrating charged-particle tracks from position-sensitive detectors.
    1. Part of: KPP Run Plan#Target/Beam centering, Raster calibration,
    2. and KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs
  5. Particle identification plots using signals from calorimetry and Cerenkov detectors.
    1. Part of: KPP Run Plan#Target/Beam centering, Raster calibration,
    2. and KPP Run Plan#Begin Detector Checkout and Spectrometer Optics Programs

Initial Beam Settings

 Beam Energy:            > 6 GeV/c
 Current requirements:   5--10 uA CW
 Polarization:           N/A

 - We will NOT steer through Compton chicane

Initial Spectrometer Settings

SHMS Configuration

   Angle:   15         (>  7.5 degrees[*] -- Beamline Config-2)
   Mom:     -3.0 GeV/c    (nominal, not really important; lower = more rate)

HMS Configuration

   Angle:   15 deg (> 10.5 degrees -- Beamline Config-2)
   Mom:     -3.0 GeV/c

Notes

 Downstream Beamline:  "Config-2"
   - Config-2 Minimum spectrometer angles are:
     SHMS = 7.5 deg [*], HMS = 10.5 deg

     [*] Moving SHMS below 10 degrees requires special attention to
         potential SHMS fringe field beam steering.


Initial Beam Steer-up

 NOTE: This is an MCC driven procedure.  My current understanding (March 1, 2017) is that the complete ATLis below will NOT be executed.  Instead a more limited steer-up procedure will be used that is better tuned to the limited goals of the Spring 2017 Run.

  Goals 
   NOTE:  NOTE MCC driven procedure 
   * KPP 2: Establish beam to Dump with SHMS magnets at production settings.

 - Beam Current:   Viewer limited (Tune Beam)
 - Target:         Empty
 - Raster:         OFF

 Procedure Excerpts (NOTE: See ATLis 16570 (Jay Benesch) for details)
 - SHMS magnets:   OFF at beginning of procedure
   - Eliminate any question of beam steering due to SHMS fringe field during initial steer-up
 - MCC will follow their procedure to establish beam to the Hall C dump
 - Hall C will log snapshots of:
   - Beam energy, Beam current, and viewer images (if available) to satisfy KPP 2
 - With Tune Beam ON, and spot visible on dump viewer:
   - Slowly bring up SHMS magnets to operating momentum settings.
   - Monitor spot image on dump viewer for unacceptable beam steering due to SHMS fringe fields.
   - Snapshot dump viewer images (if available) and SHMS magnet screens with SHMS magnets at operating currents when ramp complete.

Basic Beamline, Raster, Instrumentation checkout

Initial Raster checks

  Goals 
   - Establish beam to be roughly centered in beam pipe by locating it on YAG viewer just upstream of target.
   - Turn on Raster and verify beam profile expands as expected.

 - Beam Current:   Viewer limited (Tune Beam)
 - Target:         Empty, or solid target 
 - Raster:         Off; 2mm x 2mm

 Procedure
 - Insert YAG viewer on Hall C superharp girder
   - start with raster off, verify beam spot roughly centered
   - request raster on:  2mm x 2mm
     - watch beam spot on viewer and verify Raster's basic functionality
 - Retract viewer

Harp scans

  Goals 
   - Verify operation of Harp scanners w/ beam.
   - Establish acceptable beam profile (nominal 100--400um sigma)

 - Beam Current:   5 uA CW
 - Target:         Empty, or solid target 
 - Raster:         Off

 Procedure
 - Take Harp swipes for all viewers on Hall C beamline
   - verify beam profile (nominal 100--400um sigma) on at least one scanner on Hall C upstream beamline


Target/Beam centering, Raster calibration

  Goals 
   - Establish beam position on target.
   * KPP 3, 4, 5: Start taking data in S/HMS, offline analysis team will start analyzing data and can begin looking for tracks, initial detector
     checkout.

 - Beam Current:   5--10 uA CW
 - Target:         BeO, Carbon Hole

 Procedure
 - Note:  DAQs are running and a solid target is in place
   - Online shift crew will proceed with program below.
   - Offline shift crew will focus on demonstrating KPP 3, 4, 5
     using these solid target data.

 - Attempt to view beam on BeO
     - Target:    BeO
     - Current:   5 uA CW
     - Raster:    OFF
   - Target camera: ON
   - Target lamp:   OFF
   - Log camera snapshot of beam spot on BeO

 - Image Carbon Hole target using Raster current pickoffs vs. raw trigger rates in SHMS and/or HMS
     - NOTE: If there are issues with the raster systems, this step can be skipped provided experts are confident that we know where the beam is on target (ie. good BeO snapshot)
     - (NOTE: This does NOT require working spectrometer Optics.)
     - Target:    Carbon Hole
     - Current:   5 uA CW
     - Raster:    3mm x 3mm
   - Run DAQ on SHMS / HMS
     - Set prescales to ensure DAQ rate is dominated by scintillator triggers
   - Run Spot++
     - View the Raster *Current* X vs Y plots (not BPM plots)
     - Locate the hole in the 2D intensity histogram
       Example of imaged hole:  https://logbooks.jlab.org/entry/3427728
   - Center Beam on Target:
     - Iterate until beam centered in raster pattern
       - Adjust beam position
       - Run Spot++ to view effect
   - Calibrate raster dimensions against (known) Carbon Hole diameter by adjusting Raster magnet settings until raster is just covering the carbon hole in the image.

Begin Detector Checkout and Spectrometer Optics Programs

  Goals 
   - KPP 3, 4, 5: Data taking in SHMS/HMS continues
     - Analysis team will continue debugging until KPP 3, 4, 5 can be satisfied (if not completed already)
   - KPP 1: This program will more than the 3 hours needed to satisfy KPP 1

 Procedure
   Reference: Optics & Detector Working Group (Rolf Ent, Tanya Horn)
 * Note:  DAQs are running and a solid target is in place
   - Online shift crew will proceed with the optics program
   - Offline shift crew will focus on demonstrating KPP 3, 4, 5 using these solid target data (if not established already).
   - If not established already, the 8 hour clock on running DAQs for KPP 1 will be satisfied during this program.
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