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

Revision as of 07:06, 14 October 2022

Experiment Information

Target Operator Instructions

• PolHe3 Target Training Slides [1]
• PNMR Training slides
• How to bring up relevant target GUIs
• Polarized He3 Target Operational Restrictions (raster, beam current limits, etc)
• Procedure for Moving Between Target Cells
• Reference Cell Fill Procedure

Checklists

• Checklist before starting Target Work inside the Enclosure REVIEW THIS PAGE
• Backout Checklist after Hall Access for Target Work REVIEW THIS PAGE
• Backout Checklist after Target Work inside Enclosure REVIEW THIS PAGE

Expert Instructions

Target Cell

Reference Cell

Cooling Jet Alignment

Pol He3 Field Mapping Data

Pol He3 Field Map from TOSCA simulation

Circular Raster Information

Reboot Switches

Reset Target Ladder Motion Control

Cable/RTD/Signal Maps

Fiber RTD hardware trip points

PolHe3 Alarm Handler defaults

Reference Cell Information

• Reference Cell Window Thicknesses (As posted to the Analysis Log here: https://hallcweb.jlab.org/elogs/A1n-d2n+Combined+Analysis/59 )

Production Target Cell Information

PolHe3 Polarization Citation/Reference Link

Final Cell polarizations and supporting documentation is (will be) on the Hall C DocDB
  https://hallcweb.jlab.org/doc-private/ShowDocument?docid=1182
Use that URL as a citation/reference in papers.

Additional Details

Nominal Cell Status summary slide 

• Any cells that are production ready need to be flagged as such

• Any cells that have seen beam should be flagged with the date range

• Production cell target chamber wall thickness measurement location (JLab Measurements)

File:Production Cell Wall Thickness.png

• Production cell target chamber wall thickness measurement location (UVa Measurements)

600px

Currently Installed Cell

• Briana

  • Re-Installed in target: 08/21/2020
  • Originally Installed in target: Cell for Initial testing 12/15/2019 to 01/04/2020
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Briana.pdf

Cells Being Readied for Installation

• Tommy -- next cell; being remounted

  • Installed in target: (Soon ready for install; Planned for next Production Cell)
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Tommy.pdf

• Butterball

  • Installed in target: (Future Production Cell)
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Butterball.pdf

Older Installed Cells

• Austin

  • Installed in target: 03/20/2020 to 8/21/2020
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Austin.pdf

• Big Brother

  • Installed in target: 02/12/2020 to 03/13/2020
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Bigbrother.pdf

• Dutch

  • Installed in target: 01/04/2020 to 02/10/2020
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Dutch.pdf

• Fulla

  • Installed in target: November 2019 (Backup Cell)
  • Characterization Document: Media:Production_Cell_Info_-_Cell_Fulla.pdf

Addition Documentation

• Spreadsheet from Chris Jantzi (July 8, 2020) : Media:A1n Cell Characteristics - 08Jul2020.xlsx
• Media:Target_Summary_-_Wall_Thickness.xlsx
• Mingyu Chen (March 22, 2021): Media:Production_Cell_Info_-_Pumping_Chamber_Wall_Thickness.pdf
• "Frequency shifts in the EPR spectrom of 39K due to spin-exchange collisions with polarized 3He and precise 3He polarimetry" (Kappa_0) Paper: arXiv link, Local copy (16Oct2021)

Additional Documentation

• Info on Kepco Power Supplies
• EEL Target Lab Main Page
• 2008/9 Hall A Pol 3He Target Page

Target CAD Files/Photos

• Document Control Group
  • Use 'Advanced Search Options': Category='hall c', Document number='67507'

• Selected Target Shop Drawings
  • Target Ladder
  • Carbon Foil Mount Plate
    • 7 foils spaced 2.625" (6.667 cm) apart
    • Upstream entrance window should be at z=-30.0cm (based off 67507-00017-1.pdf, 67507-00014.pdf, 67507-00024-1.pdf)
  • Target Oven
  • Platform and coils
  • Carbon Foils

• Photos of Target Setup (google drive link)
• CAD Models from Bert
• JT files

Manuals

• Kepco Power supply (and target Field) information
  • Note on KEPCO power supplies
• SR844 Stanford Research Systems RF Lockin Amplifier Manual
• GPIB-ENET/100 Manual
• Perkin Elmer 7265 Lockin Manual
• Raytum Laser configuration file (HCLOG 3745303
• iSeries CNi32 Temperature controller (4-wire RTD)