Difference between revisions of "April 09, 2024 KLONG CPS Design Meeting"

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(Created page with "== Meeting Time and Place == Tuesday, April 09, 2024, 1pm Hall D Counting House * Invited - Hovanes Egiyan, Stephanie Worthington, Keith Harding, Pavel Degtiarenko, Tim Whi...")
 
(→‎Minutes)
 
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== Agenda ==
 
== Agenda ==
  
−
* Review minutes from last meeting https://halldweb.jlab.org/wiki/index.php/February_27,_2024_KLONG_CPS_Design_Meeting
+
* Review minutes from last meeting https://halldweb.jlab.org/wiki/index.php/March_26,_2024_KLONG_CPS_Design_Meeting
 
* Review new basic 3D model and compare to Pavel's model (Pavel, Keith)
 
* Review new basic 3D model and compare to Pavel's model (Pavel, Keith)
 
** Copper Absorber translatable model to Fluka?
 
** Copper Absorber translatable model to Fluka?
 
** Layout of magnet and components (Stephanie/Keith)
 
** Layout of magnet and components (Stephanie/Keith)
−
* Power supply status
+
* Power supply status - On order, due March 2025
 
* Magnet update (Josh/Stephanie) [[media:CPS Magnet Design_v2.pdf]]
 
* Magnet update (Josh/Stephanie) [[media:CPS Magnet Design_v2.pdf]]
 +
** Can we use less expensive resin? What is the actual expected radiation levels at coils now?
 +
* Copper cooling update - [[media:CPS Absorber cooling 8 holes.pdf]]
 +
* DeGauss test summer 2024
  
 
== Minutes ==
 
== Minutes ==
−
* Reviewed minutes from last meeting
+
* Discussed minutes from last meeting
−
* Discussed progress on 3D model
+
* Looked at positioning of components in Z. Stephanie has updated the model to the latest.
−
** Discussed possibility of removing borated poly layer from the back side when moving CPS out of beamline
+
* Pavel looked at radiation after experiment and it is decided we can remove the poly shielding 1 week after the end of beam in order to move the assy closer to the north wall
−
*** Pavel will check radiation levels
+
* Discussed Magnet design
−
*** It will make more clearance for GlueX reinstall
+
** High rad resistant resin (CTD403) has hazardous characteristics with cyanide. It may be better (and cheaper) to use a resin such as CTD101K which is much cheaper but still radiation hard (10^5 grey).
−
*** Poly can be attached outside of support frame
+
** Give Pavel the current magnet model to run in Fluka to determine the needed radiation levels
−
** current model shows using cartridges from the FCAL for support and alignment set at 33% in Z. Need to move them out slightly
+
** Magnet positioned 2cm below beam center
−
** Ok to have a gap upstream of copper absorber for water lines - total shielding thickness still needed
+
* Discussed the portion of the CPS that will be moved north after experiment
−
** On downstream end, keep center Cu/W inner block up against the absorber (inside of the water lines) OK for gap outside this
+
** May be a good idea to move the magnet with the absorber/shielding assembly
−
** Currently the copper absorber model is 1.67 cm below beam center, we will move to 2 cm below
+
** Supporting magnet from the absorber assy support may be useful
−
** Cu absorber water channels modified to .5 in holes x8. Keith/Josh will get Pavel a usable 3D model of the modified absorber to import into Fluka
+
** Steel shielding over magnet may be attached (not required) and moved with magnet to keep radiation levels down
−
* Need to set the center of the magnet poles 2cm below beamline
+
* Radiator design
−
* Magnet pole gap is clear of all materials, Cu/W can fill in coil regions
+
** may be a long shaft to bring motor outside shielding
−
* Get Z dimensions for all components
+
** may be a rack and pinion or worm gear type of set up
 +
** thick target, thin target and empty space needed  
 +
** target will be in air
 +
* Vacuum window downstream of diagnostic girder may be 100um aluminum (2.5 cm diameter)
 +
* Vacuum window on US end of permanent magnet may be Kapton if needed
 +
* Pavel requests a nitrogen purge in copper absorber area
 +
* Copper absorber
 +
** Hovanes shows 52.9KW absorbed from Pavel model 78
 +
** Tim's ANSYS model shows 51.14KW. Maybe ok sine the 8 1/2" water holes are in the model
 +
** Eugene was concerned with brazed joints for water cooling
 +
** After More discussion after the meeting, we will prsue brazing 3/8 inch tube into the absorber
 +
*** Keith will work with JLAB vacuum brazing to come up with a prototype model to test
 +
* Josh came up with a possible way to transfer models to Fluka from ANSYS. He will get a model to Pavel to see if this works
 +
* The lead bricks are here from SLAC. A PR is written to get them painted
  
 
== Action Items ==
 
== Action Items ==
−
* Pavel to check radiation levels to see if poly can be removed after experiment
 
−
* Tim to supply Z locations for adjustment cartridges
 
−
* Keith to update 3D model with changes discussed including move magnet down 2cm and absorber to 2cm below beamline
 
−
* Get absorber 3D model to Pavel - Keith/Josh
 
−
*
 

Latest revision as of 16:03, 9 April 2024

Meeting Time and Place

Tuesday, April 09, 2024, 1pm Hall D Counting House

  • Invited - Hovanes Egiyan, Stephanie Worthington, Keith Harding, Pavel Degtiarenko, Tim Whitlatch, Eugene Chudakov, Josh Ballard

Agenda

Minutes

  • Discussed minutes from last meeting
  • Looked at positioning of components in Z. Stephanie has updated the model to the latest.
  • Pavel looked at radiation after experiment and it is decided we can remove the poly shielding 1 week after the end of beam in order to move the assy closer to the north wall
  • Discussed Magnet design
    • High rad resistant resin (CTD403) has hazardous characteristics with cyanide. It may be better (and cheaper) to use a resin such as CTD101K which is much cheaper but still radiation hard (10^5 grey).
    • Give Pavel the current magnet model to run in Fluka to determine the needed radiation levels
    • Magnet positioned 2cm below beam center
  • Discussed the portion of the CPS that will be moved north after experiment
    • May be a good idea to move the magnet with the absorber/shielding assembly
    • Supporting magnet from the absorber assy support may be useful
    • Steel shielding over magnet may be attached (not required) and moved with magnet to keep radiation levels down
  • Radiator design
    • may be a long shaft to bring motor outside shielding
    • may be a rack and pinion or worm gear type of set up
    • thick target, thin target and empty space needed
    • target will be in air
  • Vacuum window downstream of diagnostic girder may be 100um aluminum (2.5 cm diameter)
  • Vacuum window on US end of permanent magnet may be Kapton if needed
  • Pavel requests a nitrogen purge in copper absorber area
  • Copper absorber
    • Hovanes shows 52.9KW absorbed from Pavel model 78
    • Tim's ANSYS model shows 51.14KW. Maybe ok sine the 8 1/2" water holes are in the model
    • Eugene was concerned with brazed joints for water cooling
    • After More discussion after the meeting, we will prsue brazing 3/8 inch tube into the absorber
      • Keith will work with JLAB vacuum brazing to come up with a prototype model to test
  • Josh came up with a possible way to transfer models to Fluka from ANSYS. He will get a model to Pavel to see if this works
  • The lead bricks are here from SLAC. A PR is written to get them painted

Action Items

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