Difference between revisions of "UCSD-2019: Technical Working Group: SATs"

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Attempt at S4 SAT-specific “Goal” statement:  
 
Attempt at S4 SAT-specific “Goal” statement:  
  
“In order to meet CD-1 and 3a goals by Spring 2021, the SAT group is organizing inputs for a key decision followed by review in early 2020.  We anticipate this will entail a downselect between single-tube and three tube SAT cryostat options, including a definition of the interface between cryocoolers and telescope mounts, mount geometry, and configuration.  Our goal for this October session is to identify the inputs we need to make a good decision in early 2020, confirm the path to getting those and the earliest possible timeline.”
+
'''“In order to meet CD-1 and 3a goals by Spring 2021, the SAT group is organizing inputs for a key decision followed by review in early 2020.  We anticipate this will entail a downselect between single-tube and three tube SAT cryostat options, including a definition of the interface between cryocoolers and telescope mounts, mount geometry, and configuration.  Our goal for this October session is to identify the inputs we need to make a good decision in early 2020, confirm the path to getting those and the earliest possible timeline.”'''
  
 
== Agenda ==
 
== Agenda ==
  
15:45 (10m)  - SAT Intro, design drivers and approach (John)
+
15:45 (10m)  - [https://docs.google.com/presentation/d/1q_fZuXpkJR0C5gv4TaqvBxs_-A0iVy4Jw4NWNCLiBu0/edit#slide=id.g634540291c_0_49 SAT Intro, design drivers and approach] (John)
  
15:55 (10m) - Roadmap to CD-1/3a (Besuner/Norton, already drafted by Gil)
+
15:55 (10m) - [https://docs.google.com/presentation/d/1RNrvvaZikO1yeXDH9ez6VbjQd8WDchry/edit#slide=id.p1 Roadmap to CD-1/3a] (Besuner/Norton, already drafted by Gil)
  
16:05 (10m) - 3-tube vs 1-tube Matrix (Akito)
+
16:05 (10m) - [https://docs.google.com/presentation/d/1yatZYk0wdt-3eKvjPzHK3zg2x5jbwOwduCtQCm-7cio/edit#slide=id.g61ab0e6bcc_0_5 3-tube vs 1-tube Matrix] (Akito)
  
 
'''“Q: Specific budget for < 4K cryo loading, including optical loading on each < 4K stage, may be a key factor for PT/subK cooler configuration and consequently the 1-tube vs 3 tube downselect.  Can we get reports of heritage S2/S3 designs, w/ loading numbers, from BK and SO, and evaluate how various choices map into cooling requirements?  Nick(SO) + Jamie(BK)”'''
 
'''“Q: Specific budget for < 4K cryo loading, including optical loading on each < 4K stage, may be a key factor for PT/subK cooler configuration and consequently the 1-tube vs 3 tube downselect.  Can we get reports of heritage S2/S3 designs, w/ loading numbers, from BK and SO, and evaluate how various choices map into cooling requirements?  Nick(SO) + Jamie(BK)”'''
  
16:15 (15m) SO SAT review (N. Galitzki)
+
16:15 (15m) [https://docs.google.com/presentation/d/1Uq5yQDOOKO68AQeb0NtTHRWH4-cshntx0M_6Pl1P3nw/edit?usp=sharing SO SAT review] (N. Galitzki)
  
16:30 (15m) BICEP/Keck cryogenic loading and IR filter experience (Jamie B)
+
16:30 (15m) [https://docs.google.com/presentation/d/1kXFW30QA4NIOiB9h9Gkf9Gvu-QYgFzkOxP4cCve-VI4/edit#slide=id.p BICEP/Keck cryogenic loading and IR filter experience] (Jamie B)
  
 
'''“Q: External Shielding may be a key factor for 1-tube vs 3-tube downselect.  Do we have common agreement on design criteria for geometry trade study? Kirit K., Fred Matsuda”'''
 
'''“Q: External Shielding may be a key factor for 1-tube vs 3-tube downselect.  Do we have common agreement on design criteria for geometry trade study? Kirit K., Fred Matsuda”'''
  
16:45 (10m) SO SAT warm baffling and shielding design (Fred Matsuda)
+
16:45 (10m) [https://docs.google.com/presentation/d/1eDKdVOGxKbxLeDFiJ9Kpc9mzu4vdR-ciP_h3IKw9ml8/edit#slide=id.p SO SAT warm baffling and shielding design] (Fred Matsuda)
  
16:55 (10m) BICEP warm baffling/shielding (Karkare)
+
16:55 (10m) [https://docs.google.com/presentation/d/15jZRHyMVZmBn682Ra-X8clvnB7X4xJnJTn8-TmIa_SM/edit#slide=id.p BICEP warm baffling/shielding] (Karkare)
  
 
'''“Q: subK cooler compatibility with mount, site, and other constraints may be a key factor in cryostat configuration decision.  Do we have a clear enough idea of compatibilities and risks?: Ben S. (+ Nick)”'''
 
'''“Q: subK cooler compatibility with mount, site, and other constraints may be a key factor in cryostat configuration decision.  Do we have a clear enough idea of compatibilities and risks?: Ben S. (+ Nick)”'''
  
17:05 (10m) S4 SAT Sub-4K Coolers and Mount Interface Implications (B. L. Schmitt)
+
17:05 (10m) [https://docs.google.com/presentation/d/1X8XBsjo78OL37LRhiDQ15Is4ChUGrXkS/edit#slide=id.p1 S4 SAT Sub-4K Coolers and Mount Interface Implications] (B. L. Schmitt)
  
 
'''“Q: Can we be confident that magnetic/RFI shielding will be equally possible for the 3-shooter and 1-shooter designs?”'''
 
'''“Q: Can we be confident that magnetic/RFI shielding will be equally possible for the 3-shooter and 1-shooter designs?”'''
  
 
17:15 (10m total)
 
17:15 (10m total)
* BICEP magnetic/RFI shielding experience (Moncelsi, help: Schillaci, Basu Thakur, Nguyen)
+
* [https://docs.google.com/presentation/d/1TOKQpaRDVkyYppbupZ4eHrP606cApz21/edit#slide=id.p1 BICEP magnetic/RFI shielding experience] (Moncelsi, help: Schillaci, Basu Thakur, Nguyen)
* SO SAT magnetic shielding design (Amir Ali)
+
* [https://docs.google.com/presentation/d/1_CmRtjB3fbgfx_x_9ecGMLF9X-wvbrD1supYbKaXJhc/edit#slide=id.p SO SAT magnetic shielding design] (Amir Ali)
  
17:25-17:45 (20m) discussion
+
17:25-17:45 (20m) [https://docs.google.com/document/d/1bzQzv20Ci_ftinW_9UppIrLJcNSqvGX0xLFNPYKEQcg/edit discussion]
  
 
== Remote attendance ==
 
== Remote attendance ==
 +
https://lbnl.zoom.us/j/532894630
  
 +
+1 669 900 6833
 +
or
 +
+1 646 558 8656
 +
 +
Meeting ID: 532 894 630
 +
 +
 +
The following nomianl one not working.  Use the above alternative.
 
[https://ucsd.zoom.us/j/739724358 Zoom link]
 
[https://ucsd.zoom.us/j/739724358 Zoom link]
 
  
 
== Notes ==
 
== Notes ==
  
Please take notes on this live Google Doc [https://docs.google.com/document/d/1bzQzv20Ci_ftinW_9UppIrLJcNSqvGX0xLFNPYKEQcg/edit]
+
Please take notes on this live [https://docs.google.com/document/d/1bzQzv20Ci_ftinW_9UppIrLJcNSqvGX0xLFNPYKEQcg/edit Google Doc]

Latest revision as of 17:01, 17 October 2019

Link back to agenda

Charge

Generic L2 Parallel charge:

  • Identify key decisions that must be made (and justified) prior to CD-1
  • Make progress on (or actually make) those decisions,
  • Lay out a timeline and process for making each decision, consistent with the post-decision work and internal reviews that will be needed to complete preparations for CD-1,
  • Ensure that those timelines and processes are understood and supported by the collaboration, and that we (together) believe we can follow them.

Attempt at S4 SAT-specific “Goal” statement:

“In order to meet CD-1 and 3a goals by Spring 2021, the SAT group is organizing inputs for a key decision followed by review in early 2020. We anticipate this will entail a downselect between single-tube and three tube SAT cryostat options, including a definition of the interface between cryocoolers and telescope mounts, mount geometry, and configuration. Our goal for this October session is to identify the inputs we need to make a good decision in early 2020, confirm the path to getting those and the earliest possible timeline.”

Agenda

15:45 (10m) - SAT Intro, design drivers and approach (John)

15:55 (10m) - Roadmap to CD-1/3a (Besuner/Norton, already drafted by Gil)

16:05 (10m) - 3-tube vs 1-tube Matrix (Akito)

“Q: Specific budget for < 4K cryo loading, including optical loading on each < 4K stage, may be a key factor for PT/subK cooler configuration and consequently the 1-tube vs 3 tube downselect. Can we get reports of heritage S2/S3 designs, w/ loading numbers, from BK and SO, and evaluate how various choices map into cooling requirements? Nick(SO) + Jamie(BK)”

16:15 (15m) SO SAT review (N. Galitzki)

16:30 (15m) BICEP/Keck cryogenic loading and IR filter experience (Jamie B)

“Q: External Shielding may be a key factor for 1-tube vs 3-tube downselect. Do we have common agreement on design criteria for geometry trade study? Kirit K., Fred Matsuda”

16:45 (10m) SO SAT warm baffling and shielding design (Fred Matsuda)

16:55 (10m) BICEP warm baffling/shielding (Karkare)

“Q: subK cooler compatibility with mount, site, and other constraints may be a key factor in cryostat configuration decision. Do we have a clear enough idea of compatibilities and risks?: Ben S. (+ Nick)”

17:05 (10m) S4 SAT Sub-4K Coolers and Mount Interface Implications (B. L. Schmitt)

“Q: Can we be confident that magnetic/RFI shielding will be equally possible for the 3-shooter and 1-shooter designs?”

17:15 (10m total)

17:25-17:45 (20m) discussion

Remote attendance

https://lbnl.zoom.us/j/532894630

+1 669 900 6833 or +1 646 558 8656

Meeting ID: 532 894 630


The following nomianl one not working. Use the above alternative. Zoom link

Notes

Please take notes on this live Google Doc