Pol He-3 Target Information
From HallCWiki
Contents
Target Operator Instructions
- PolHe3 Target Training Slides
- Pol He-3 Target Screen Setup / How-tos
- Pol He3 Operational Restrictions (raster, beam current limits, etc)
- Procedure for moving to a glass target cell (pdf) (ODP.zip)
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
- 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
- EPICS data:
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
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
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.
Production Target Cell Information
- 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)
- Production cell target chamber wall thickness measurement location (UVa Measurements)
Austin
- Installed in target: 03/20/2020 to present
- 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
Briana
- Installed in target: Cell for Initial testing 12/15/2019 to 01/04/2020
- Characterization Document: Media:Production_Cell_Info_-_Cell_Briana.pdf
Fulla
- Installed in target: November 2019 (Backup Cell)
- Characterization Document: Media:Production_Cell_Info_-_Cell_Fulla.pdf
Tommy
- Installed in target: (Future 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
Addition Documentation
- Spreadsheet from Chris Jantzi (July 8, 2020) : Media:A1n Cell Characteristics - 08Jul2020.zip (zipped to make it an 'allowed' file on the wiki)
Additional Documentation
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