Difference between revisions of "Pol He-3 Target Information GEn"

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[[File:Target.png|thumb|625px|right|Cell "Talisker" mounted in target enclosure]]
 
== Experiment Information ==
 
== Experiment Information ==
 +
The GEn experiment is determining the electric form factor of the neutron to high Q<sup>2</sup> by measuring the ratio of the electric form factor of the neutron to proton via recoil polarimetry. The planned kinematic points have changed slightly from the original proposal; however, the impact of these measurements remains intact. The new kinematics are shown Figure 1 along with the expected uncertainty compared to the originally proposed kinematics. These error bars include current estimate of target and datector performance.
 +
 +
*[https://hallaweb.jlab.org/experiment/SBS/GEn/GEn_Website.html#generic GEn-II Proposal]
 +
*[https://hallaweb.jlab.org/experiment/SBS/GEn/GEn_Website.html#generic GEn-II ERR]
  
 
== Target Operator Instructions ==
 
== Target Operator Instructions ==
−
* PolHe3 Target Training Slides [https://hallcweb.jlab.org/experiments/PolHe3-2019/PolHe3_Target_Training_30Jul2020.pdf]
+
* New PolHe3 Target Training Slides [https://sbs.jlab.org/DocDB/0003/000330/008/TO_training%20slides_halla.pdf]
 +
* Old PolHe3 Target Training Slides [https://hallcweb.jlab.org/experiments/PolHe3-2019/PolHe3_Target_Training_30Jul2020.pdf]
 
* PNMR Training slides
 
* PNMR Training slides
−
* How to bring up relevant target GUIs
+
* [[How to bring up relevant target GUIs]]
 
* Polarized He3 Target Operational Restrictions (raster, beam current limits, etc)
 
* Polarized He3 Target Operational Restrictions (raster, beam current limits, etc)
−
* Procedure for Moving Between Target Cells
+
* [[Procedure for Moving Between Target Cells]]
 
* Reference Cell Fill Procedure
 
* Reference Cell Fill Procedure
 +
* [[Helmholtz Coils Settings for Different Magnet Configurations]]
  
 
== Checklists ==
 
== Checklists ==
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* [[Backout Checklist after Hall Access for Target Work ]] REVIEW THIS PAGE
 
* [[Backout Checklist after Hall Access for Target Work ]] REVIEW THIS PAGE
 
* [[Backout Checklist after Target Work inside Enclosure ]] REVIEW THIS PAGE
 
* [[Backout Checklist after Target Work inside Enclosure ]] REVIEW THIS PAGE
 +
* [[Checklist for each shift]]
 +
 +
== Target Polarization ==
 +
 +
[[Measurements]] UPDATE FOR GEn!!
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 +
== Target Meetings ==
 +
 +
[[Weekly Meetings]]
  
 
== Expert Instructions ==
 
== Expert Instructions ==
 
=== Target Cell ===
 
=== Target Cell ===
 +
* [https://sbs.jlab.org/cgi-bin/DocDB/private/ShowDocument?docid=277 Instructions for mounting new cell]
  
 
=== Reference Cell ===
 
=== Reference Cell ===
 +
* [https://hallaweb.jlab.org/wiki/images/e/e2/Ref._Cell._Operating_Procedures_GEN-II.pdf Operating Procedures]
  
 
=== Cooling Jet Alignment ===
 
=== Cooling Jet Alignment ===
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=== Circular Raster Information ===
 
=== Circular Raster Information ===
−
 
−
=== Reboot Switches ===
 
  
 
=== Reset Target Ladder Motion Control ===
 
=== Reset Target Ladder Motion Control ===
 +
[https://hallaweb.jlab.org/wiki/index.php/Iocha26_reboot_information Reboot instructions]
  
 
=== Cable/RTD/Signal Maps ===
 
=== Cable/RTD/Signal Maps ===
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=== General Specifications for Target Cells ===
 
=== General Specifications for Target Cells ===
 +
*[https://sbs.jlab.org/DocDB/0000/000026/001/sbs_july_2018_collab_mtg_target_v3.pdf Information from 2018 SBS collaboration meeting]
 +
 
documents from Gordon?
 
documents from Gordon?
−
 
−
=== Currently Installed Cell ===
 
−
*; Hunter
 
−
** Installed in target: 10/14/2022
 
  
 
=== Cells Being Readied for Installation ===
 
=== Cells Being Readied for Installation ===
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** Undergoing tests at UVA
 
** Undergoing tests at UVA
  
−
*; Windmill
+
*; Tiger
 
** Undergoing tests at UVA
 
** Undergoing tests at UVA
  
 
=== Older Installed Cells ===
 
=== Older Installed Cells ===
 
*; Ukraine
 
*; Ukraine
−
** Installed in target: 10/06/2022 to 10/13/2022 CHECK THIS BEGINNING DATE
+
** Installed in target enclosure: 10/03/2022 to 10/13/2022
 
** Used for commissioning
 
** Used for commissioning
−
** Characterization Document:
+
** Characterization document: [https://hallaweb.jlab.org/wiki/index.php/Pol_He-3_Target_Information_GEn/CellUkraine]
 +
 
 +
*; Hunter
 +
** Installed in target enclosure: 10/14/2022 to *******
 +
** Installed in target enclosure:
 +
** Used for commissioning
 +
** Used for kinematics points
 +
** Characterization document: [https://hallaweb.jlab.org/wiki/index.php/Pol_He-3_Target_Information_GEn/CellHunter]
 +
 
 +
*; Windmill
 +
** Installed in target enclosure:
 +
** Used for kinematics points
 +
** Characterization document: [https://hallaweb.jlab.org/wiki/index.php/Pol_He-3_Target_Information_GEn/CellWindmill]
 +
 
 +
*; Fringe
 +
** Installed in target enclosure:
 +
** Used for kinematics points
 +
** Characterization document: [https://hallaweb.jlab.org/wiki/index.php/Pol_He-3_Target_Information_GEn/CellFringe]
 +
 
 +
*; Chicago
 +
** Installed in target enclosure:
 +
** Used for kinematics points
 +
** Characterization document: [https://hallaweb.jlab.org/wiki/index.php/Pol_He-3_Target_Information_GEn/CellChicago]
  
 
=== Addition Documentation ===
 
=== Addition Documentation ===
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* Selected Target Shop Drawings
 
* Selected Target Shop Drawings
 +
 +
*[https://hallaweb.jlab.org/wiki/images/8/8f/OvenAssymblyPictures.pdf Oven Assembly Pictures]
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 +
=== Target Ladder ===
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 +
* [https://sbs.jlab.org/DocDB/0003/000323/003/carbon_foil_GEn.pdf Information on Carbon Foils]
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 +
=== Holding Field ===
 +
 +
* [https://sbs.jlab.org/DocDB/0002/000282/003/dflay_corr-opera-studies_GEn.pdf GEn Corrector Magnet Settings]
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 +
=== Safety Documents ===
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 +
* [https://sbs.jlab.org/DocDB/0003/000319/001/operational_safety_procedure_form_142218.pdf OSP for Magnetic Field Measurments]
 +
 +
* [https://sbs.jlab.org/DocDB/0003/000309/001/operational_safety_procedure_form_136887.pdf OSP for Polarized He3 Target]
  
 
== Manuals ==
 
== Manuals ==

Latest revision as of 11:08, 31 March 2023

Cell "Talisker" mounted in target enclosure

Experiment Information

The GEn experiment is determining the electric form factor of the neutron to high Q2 by measuring the ratio of the electric form factor of the neutron to proton via recoil polarimetry. The planned kinematic points have changed slightly from the original proposal; however, the impact of these measurements remains intact. The new kinematics are shown Figure 1 along with the expected uncertainty compared to the originally proposed kinematics. These error bars include current estimate of target and datector performance.

Target Operator Instructions

Checklists

Target Polarization

Measurements UPDATE FOR GEn!!

Target Meetings

Weekly Meetings

Expert Instructions

Target Cell

Reference Cell

Cooling Jet Alignment

Pol He3 Field Mapping Data

Pol He3 Field Map from TOSCA simulation

Circular Raster Information

Reset Target Ladder Motion Control

Reboot instructions

Cable/RTD/Signal Maps

Fiber RTD hardware trip points

PolHe3 Alarm Handler defaults

Reference Cell Information

  • Documents from Todd?

Production Target Cell Information

General Specifications for Target Cells

documents from Gordon?

Cells Being Readied for Installation

  • Pristine
    • Undergoing tests at UVA
  • Tiger
    • Undergoing tests at UVA

Older Installed Cells

  • Ukraine
    • Installed in target enclosure: 10/03/2022 to 10/13/2022
    • Used for commissioning
    • Characterization document: [3]
  • Hunter
    • Installed in target enclosure: 10/14/2022 to *******
    • Installed in target enclosure:
    • Used for commissioning
    • Used for kinematics points
    • Characterization document: [4]
  • Windmill
    • Installed in target enclosure:
    • Used for kinematics points
    • Characterization document: [5]
  • Fringe
    • Installed in target enclosure:
    • Used for kinematics points
    • Characterization document: [6]
  • Chicago
    • Installed in target enclosure:
    • Used for kinematics points
    • Characterization document: [7]

Addition Documentation

information on study of magnetic field alignment in cells?

Additional Documentation

Target CAD Files/Photos

  • Selected Target Shop Drawings

Target Ladder

Holding Field

Safety Documents

Manuals

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