Difference between revisions of "Meeting 24 September 2021"

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* Design models, stress/thermal calculations
 
* Design models, stress/thermal calculations
 
* Engineering analysis and planning
 
* Engineering analysis and planning
−
::* [https://wiki.jlab.org/cuawiki/images/9/9a/CPS_Ver_D.pptx CPS Ver D]
+
::* [https://wiki.jlab.org/cuawiki/images/9/9a/CPS_Ver_D.pptx CPS Ver D] (Steven L.)
 
* TCS updates
 
* TCS updates
−
* [https://wiki.jlab.org/cuawiki/images/3/32/CPSmeeting_Friday24Sept2021_mboer.pdf brief updates from VT]
+
::* [https://wiki.jlab.org/cuawiki/images/3/32/CPSmeeting_Friday24Sept2021_mboer.pdf brief updates from VT]
 +
::* [https://wiki.jlab.org/cuawiki/images/6/60/Tcs_vertex_recon_sep24_21.pdf Vertex reconstruction] (Vardan)
 
* Other
 
* Other
 +
 +
 +
PARTICIPANTS: Amy Comer, Bogdan Wojtsekhowski, Arshak Asaturyan, Erik Wrighton, Marie Boer, Brannon Semp, David Hamilton, Donal Day, Hamlet Mkrtchyan, Tanja Horn, Petr Stepanov, Rolf Ent, Steven Lassiter, Vardan Tadevosyan, Igor Strakovsky
 +
 +
 +
'''MODELING THERMAL STRESSES AND PROTOTYPE'''
 +
 +
* Investigated different heater configurations - Thinner and longer heater tines, three heater tines to each absorber plot
 +
 +
* Temperature profile and stress/deformation
 +
 +
* Modeling heater attached vs. no heater to make sure that see real effect of beam and not of heater
 +
::* observe very little impact, so confident what will be observed is beam effect
 +
 +
* Prototype design/construction
 +
::* copper material sourced - C101 (not radiation hard material, but not tested in this test, $23/pound)
 +
::* plan to make two different configurations
 +
::* two ways to make prototype (water jet cutting or laminated) - prefer water jet cutting, investigating cost and precision possible (would prefer 1mm tolerance or better)
 +
::* dimensions: to be finalized
 +
::* Plan to do prototype tests in Fall 2021
 +
::* could do like SHMS HB jig test
 +
 +
 +
'''CPS MAGNET SHIEDLDING DESIGN'''
 +
 +
* first drawings prepared by B. Metzger
 +
 +
'''THERMAL DESIGN MODELS
 +
'''
 +
* Temperature profile is in very good agreement with what is expected
 +
 +
* Currently investigating model of curvature of cooling channels
 +
 +
 +
'''TUNGSTEN BLOCKS AND TUNGSTEN COPPER'''
 +
 +
* Elmet block procurement initiated - cost effective for large quantity (trying for half of blocks needed)
 +
 +
* Higher precision machined blocks
 +
 +
* Tungsten copper located at JLab
 +
 +
 +
'''LEAD BLOCKS'''
 +
 +
* SLAC can provide additional lead blocks at cost of $1 per block
 +
 +
 +
'''TCS UPDATES'''
 +
 +
* Student projects introduction
 +
 +
* TCS Vertex reconstruction
 +
::* goal: demonstrate offline analysis using only detector hit information (energy clusters) and regression
 +
::* use proton information from calorimeter and tracker to reconstruct
 +
::* clustering done as for SHMS pre-shower
 +
::* results seem to suggest not enough resolution for z at target
 +
 +
::* check also backtracking as done for BigCal/Hall C - Mark Jones/Oscar Rondon may have additional details
 +
::* later also check on impact of accidentals
 +
 +
 +
'''NEXT MEETING: FRIDAY OCTOBER 22 AT 8AM ET'''

Latest revision as of 09:48, 24 September 2021

DISCUSSION ITEMS

  • Design models, stress/thermal calculations
  • Engineering analysis and planning
  • TCS updates
  • Other


PARTICIPANTS: Amy Comer, Bogdan Wojtsekhowski, Arshak Asaturyan, Erik Wrighton, Marie Boer, Brannon Semp, David Hamilton, Donal Day, Hamlet Mkrtchyan, Tanja Horn, Petr Stepanov, Rolf Ent, Steven Lassiter, Vardan Tadevosyan, Igor Strakovsky


MODELING THERMAL STRESSES AND PROTOTYPE

  • Investigated different heater configurations - Thinner and longer heater tines, three heater tines to each absorber plot
  • Temperature profile and stress/deformation
  • Modeling heater attached vs. no heater to make sure that see real effect of beam and not of heater
  • observe very little impact, so confident what will be observed is beam effect
  • Prototype design/construction
  • copper material sourced - C101 (not radiation hard material, but not tested in this test, $23/pound)
  • plan to make two different configurations
  • two ways to make prototype (water jet cutting or laminated) - prefer water jet cutting, investigating cost and precision possible (would prefer 1mm tolerance or better)
  • dimensions: to be finalized
  • Plan to do prototype tests in Fall 2021
  • could do like SHMS HB jig test


CPS MAGNET SHIEDLDING DESIGN

  • first drawings prepared by B. Metzger

THERMAL DESIGN MODELS

  • Temperature profile is in very good agreement with what is expected
  • Currently investigating model of curvature of cooling channels


TUNGSTEN BLOCKS AND TUNGSTEN COPPER

  • Elmet block procurement initiated - cost effective for large quantity (trying for half of blocks needed)
  • Higher precision machined blocks
  • Tungsten copper located at JLab


LEAD BLOCKS

  • SLAC can provide additional lead blocks at cost of $1 per block


TCS UPDATES

  • Student projects introduction
  • TCS Vertex reconstruction
  • goal: demonstrate offline analysis using only detector hit information (energy clusters) and regression
  • use proton information from calorimeter and tracker to reconstruct
  • clustering done as for SHMS pre-shower
  • results seem to suggest not enough resolution for z at target
  • check also backtracking as done for BigCal/Hall C - Mark Jones/Oscar Rondon may have additional details
  • later also check on impact of accidentals


NEXT MEETING: FRIDAY OCTOBER 22 AT 8AM ET

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