Difference between revisions of "TDIS Bi-monthly meeting, 2018 August 21"

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*[https://hallaweb.jlab.org/wiki/images/d/d2/Target_teststand.pdf pressure testing of mock target cell]
 
*[https://hallaweb.jlab.org/wiki/images/d/d2/Target_teststand.pdf pressure testing of mock target cell]
 
*[https://hallaweb.jlab.org/wiki/images/f/f1/ProtonDetectionProba.pdf Proton minimum momentum for detection probability in mTPC]
 
*[https://hallaweb.jlab.org/wiki/images/f/f1/ProtonDetectionProba.pdf Proton minimum momentum for detection probability in mTPC]
 +
*[https://hallaweb.jlab.org/wiki/images/3/31/Test_stand_8_21.pdf pictures of components for the electronics test stand - arrived recently at JLab]
 +
 +
==Minutes==
 +
Reviewed the outline draft that Thia circulated for the conditional lift.
 +
Comments:
 +
* PAC concerns for theory and for technical risks/challenges should be treated separately;
 +
* more emphasis should be put on the mTPC design concept, with motivations, and advantages over the RTPC etc.;
 +
* merge section on rates and simulations.
 +
 +
Update on simulation:
 +
Clarifications for plots of proton minimum momentum: What is plotted is the momentum value at which the detection probability /differential with proton momentum/ goes above the "goal value" - not a detection probability integrated over all a large range of momentum.
 +
For 293K, 4 atm, 1cm diameter target and 40 um kapton target wall, this momentum is ~73 MeV - which means a cryogenic target and mTPC shall not be mandatory.
 +
TODO for the plots: clarify what is plotted, + add all fixed target parameters (temp, diam, etc.)
 +
 +
Update on target test stand:
 +
* 40 um kapton target mock up (with 20 um coating on each side) being tested for pressure: internal pressure of 5.4 and 8.5 atm to be applied for a few days. Results to come soon. Hope is the target wall coating does not participate to the strength of the target wall to internal pressure.
 +
 +
Update on front end:
 +
* Some compoments are at the lab to start install and test the front-end electronics.
  
 
==Organizational details==
 
==Organizational details==

Revision as of 15:51, 21 August 2018

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Agenda

look at p19

Minutes

Reviewed the outline draft that Thia circulated for the conditional lift. Comments:

  • PAC concerns for theory and for technical risks/challenges should be treated separately;
  • more emphasis should be put on the mTPC design concept, with motivations, and advantages over the RTPC etc.;
  • merge section on rates and simulations.

Update on simulation: Clarifications for plots of proton minimum momentum: What is plotted is the momentum value at which the detection probability /differential with proton momentum/ goes above the "goal value" - not a detection probability integrated over all a large range of momentum. For 293K, 4 atm, 1cm diameter target and 40 um kapton target wall, this momentum is ~73 MeV - which means a cryogenic target and mTPC shall not be mandatory. TODO for the plots: clarify what is plotted, + add all fixed target parameters (temp, diam, etc.)

Update on target test stand:

  • 40 um kapton target mock up (with 20 um coating on each side) being tested for pressure: internal pressure of 5.4 and 8.5 atm to be applied for a few days. Results to come soon. Hope is the target wall coating does not participate to the strength of the target wall to internal pressure.

Update on front end:

  • Some compoments are at the lab to start install and test the front-end electronics.

Organizational details

11:00 AM, JLab meeting room: CC A110
To join the Meeting:
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  2. Enter Conference ID : 550335940