Pol He-3 Target Information

Target Operator Instructions

• PolHe3 Target Training Slides
• Pol He-3 Target Screen Setup / How-tos
• Pol He3 Operational Restrictions (raster, beam current limits, etc)

Checklists

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

Expert Information

Reference Cell

• How to install/remove a reference cell
• Reference Cell Summary Document

• Pressure calibration data:
  • EPICS data:
    • Vacuum readback: ADC channel 7 (raw: HcHPE1313ACh7; "calibrated": polhe3:CellVacuum )
    • Pressure readback: ADC channel 8 (raw: HcHPE1313ACh8; "calibrated": polhe3:CellPressure )
  • 04 Dec 2019 : Reference Cell Summary Document (These calibrations were done before a 1 uF cap was added on 18 Dec 2019 [1])
  • 14 Feb 2020 : Reference Cell pressure calibration (14 Feb 2020)
    • A little more information: https://logbooks.jlab.org/entry/3788269

Cooling Jet Alignment

Alignment jigs and drawings are stored on the box labeled 'Averett 3He Reference Cell Pts'. And the box is on the floor underneath the Hall C counting house printer.

Pol He3 Field Mapping Data

• Pol He3 Field Mapping Data
• Field Correction Settings

Circular Raster Information

• Raster Status Presentation Mark J., Bob M. (Dec 10, 2018 Collaboration Meeting)

Reboot Switches

• Reboot Switch Operation --How to use reboot switches
• hcreboot5 --Devices in the Pol He3 Rack behind the Green Wall
• hcreboot6 --Devices in the two racks under the pivot
• hcreboot7 --Devices in the two racks under the pivot

Reset Target Ladder Motion Control

Pol He-3 Target Motion Reset

Cable/RTD/Signal Maps

NOTE: If you update a map below
 Click on a the previous hclog entry and either add a comment 
 pointing to your new entry, or use the 'Follow-up' link on the
 old entry to make a new entry. That will make it easier to track
 when/why things change.

• Note: There is a dictionary of EPICS PVs with descriptions at
  • ~coda/coda/scripts/EPICS_logging/polhe3-epics.txt
• Laser Fiber End RTDs:
  • Hardware notes: https://logbooks.jlab.org/entry/3747838
  • Final Map: https://logbooks.jlab.org/entry/3747950
• RTDs on cell:
  • Visual gauge photo and PV map: https://logbooks.jlab.org/entry/3747509 (12/06/2019 - 03:48)
  • RTD head settings: https://logbooks.jlab.org/entry/3747508

Fiber RTD hardware trip points

• Fire Safety RTDs
  • HcFiberTemp0, HcFiberTemp1
  • max measured about 32C
  • set trip to 36C

• Fiber Temperature RTDs
  • HcFiberTemp4+ (except for 12, 14 below)
  • Max measured of about 32C
  • set trip to 46C (as of Jan 14, 2020 -- will set to 36C during next downtime)

• HcFiberTemp12, 14
  • Max measured of 40C
  • set trip to 46C

Reset instructions for RTD HW trip points • Expert only (Brad or Ethan) [click]

Address 0xF6
 FiberTemp0-1:  (and the unused 2, 3)
   Fire safety RTDs (max 36)
Address 0xF5
 FiberTemp4--7
 * max 36
Address 0xF3
 FiberTemp8--11
 * max 36
Address 0xF4
 FiberTemp12-15
 * max 46 due to 12, 14

NOTE: power cycling the acromag controller below will trip the laser interlock!

• Set the hardware trip limits

% ssh pi@polhe3pi2  ('hccuser' password)
% cd Documents
% scls  # select 'acromag' entry, then type Ctrl-C to kill the program
# Set the limits
% for f in 0xf3 0xf5 0xF6; do ./setupAcro -l 36 -a $f; done
% for f in 0xf4; do ./setupAcro -l 46 -a $f; done
# Reboot the acromag controller using hcreboot6
# Then restart the software by (for example) running bash again
% bash

• Verify that the stripcharts are updating again and close the terminal window.

PolHe3 Alarm Handler defaults

These can be reset this way:

 % ssh cvxwrks@cdaql1
 % cd alarm_handler_polhe3
 % ./set_polhe3_defaults

Type in the number for the fields you wish to reset and hit return.

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

• 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)