Difference between revisions of "Meeting 30 July 2021"

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'''DISCUSSION ITEMS'''
 
'''DISCUSSION ITEMS'''
 +
 +
* Rotating target updates
  
 
* Design models, stress/thermal calculations
 
* Design models, stress/thermal calculations
 +
::* [https://wiki.jlab.org/cuawiki/images/e/e8/Cps30_longitudinal_power_deposition.pdf CPS Longitudinal Power Deposition]
  
 
* Engineering analysis and planning
 
* Engineering analysis and planning
  
 
* TCS updates
 
* TCS updates
−
::* Transverse polarized TCS
+
::* Transverse polarized TCS Brannon Semp (VT) [https://wiki.jlab.org/cuawiki/index.php/File:July30BrannonSpresent.pdf single & double spin asymmetries for TCS]
  
 
* Other
 
* Other
 +
 +
 +
PARTICIPANTS: Amy Comer, Bert Metzger, Bogdan Wojtsekhowski, Brannon Semp, Dustin Keller, Rolf Ent, Hamlet Mkrtchyan, Josh Crafts, Kevin, Marie Boer, Vardan Tadevosyan, Tanja Horn
 +
 +
 +
'''DESIGN/ENGINEERING''' (Amy, Bert, Bogdan, Gabriel, Josh)
 +
 +
* Cooling system work ongoing
 +
::* Power deposition along z has been updated
 +
 +
* Testing part of absorber
 +
 +
* Materials
 +
::* First tungsten powder blocks for inner part of magnet arrived
 +
 +
::* Checking on sintered (still have to shim) tungsten blocks - cost increased over years - need to look into optimization of shielding (main focus on front since most radiation there), dimensions roughly ~3"x(4-5)"x6"
 +
 +
::* Change of procurement plan
 +
:::* initially hoped that get magnet out for procurement, but will still take
 +
:::* move towards tungsten and start procurement of high density tungsten blocks (16 g/cm3) for center region ~20% of blocks needed
 +
 +
* '''Action items''':
 +
::* Check on number of tungsten blocks needed - with 16 g/cm3 and for earlier block size (2 x 4 x 4) assumption ~19.4 (metric) tons
 +
::* Start the procurement for the inner part of the shielding
 +
 +
* From later discussion on Tungsten bricks:
 +
::* 19.43 metric tons or ~2109 bricks of 2 x 4 x 4
 +
::* For the larger bricks of Elmet of 3" x 4.125" x 6.2" that would be ~880.
 +
 +
 +
'''ROTATING TARGET UPDATE''' (Dustin)
 +
 +
* Two design options
 +
::* standard - limited to one cup, likely will require frequent changes of bellows (quantify)
 +
::* new - can take more than one cup, design to optimize bellow wear
 +
 +
* Standard prototype has been built - still needs to be tested (cool down and in beam at NIST)
 +
 +
* New design does not yet have a prototype
 +
 +
* Action item: further develop a plan toward realizing a rotating target for the experiments
 +
 +
 +
TCS TRANSVERSE POLARIZED (Brannon)
 +
 +
* Additional science that could be done within the time of the current C2 approved TCS proposal
 +
::* Need to check rates and backgrounds etc.
 +
 +
* '''Action items''':
 +
::* focus on removing C2 conditional on TCS proposal first - aim for completing in next four months
 +
::* evaluate experimental details of new science in 2022
 +
 +
 +
'''NEXT MEETING: FRIDAY 27 AUGUST AT 8AM ET'''

Latest revision as of 05:22, 2 August 2021

DISCUSSION ITEMS

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


PARTICIPANTS: Amy Comer, Bert Metzger, Bogdan Wojtsekhowski, Brannon Semp, Dustin Keller, Rolf Ent, Hamlet Mkrtchyan, Josh Crafts, Kevin, Marie Boer, Vardan Tadevosyan, Tanja Horn


DESIGN/ENGINEERING (Amy, Bert, Bogdan, Gabriel, Josh)

  • Cooling system work ongoing
  • Power deposition along z has been updated
  • Testing part of absorber
  • Materials
  • First tungsten powder blocks for inner part of magnet arrived
  • Checking on sintered (still have to shim) tungsten blocks - cost increased over years - need to look into optimization of shielding (main focus on front since most radiation there), dimensions roughly ~3"x(4-5)"x6"
  • Change of procurement plan
  • initially hoped that get magnet out for procurement, but will still take
  • move towards tungsten and start procurement of high density tungsten blocks (16 g/cm3) for center region ~20% of blocks needed
  • Action items:
  • Check on number of tungsten blocks needed - with 16 g/cm3 and for earlier block size (2 x 4 x 4) assumption ~19.4 (metric) tons
  • Start the procurement for the inner part of the shielding
  • From later discussion on Tungsten bricks:
  • 19.43 metric tons or ~2109 bricks of 2 x 4 x 4
  • For the larger bricks of Elmet of 3" x 4.125" x 6.2" that would be ~880.


ROTATING TARGET UPDATE (Dustin)

  • Two design options
  • standard - limited to one cup, likely will require frequent changes of bellows (quantify)
  • new - can take more than one cup, design to optimize bellow wear
  • Standard prototype has been built - still needs to be tested (cool down and in beam at NIST)
  • New design does not yet have a prototype
  • Action item: further develop a plan toward realizing a rotating target for the experiments


TCS TRANSVERSE POLARIZED (Brannon)

  • Additional science that could be done within the time of the current C2 approved TCS proposal
  • Need to check rates and backgrounds etc.
  • Action items:
  • focus on removing C2 conditional on TCS proposal first - aim for completing in next four months
  • evaluate experimental details of new science in 2022


NEXT MEETING: FRIDAY 27 AUGUST AT 8AM ET

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