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2017-02-16T10h00 Focal Plane & Detectors Telecon

Connection Info:

Videoconference reservation: E4 Detectors

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Conference number 	729526 (end by #)
Access code 	5546 (end by #)

Conference
Title 	E4 Detectors
Begin 	2017-02-16 10:00 Europe/Paris
Duration 	02:00
Number of estimated connections 	13

Agenda:

  • An introduction from Ken:

Paolo, Alberto and others noted that we really should define frequency ranges and then loading limitations before jumping into technology. 30-250 GHz seemed "reasonable", but there is concern that we might have to go lower or higher (e.g., AME, etc.), so we need the following work, in conjunction with Working Group 2:

  1. Define Lower Frequency Limit: Alberto+Enrique+Grenoble (Juan)
  2. Define Upper Frequency Limit: Grenoble+PaoloDB
  3. Define "break" frequency between lower and upper: Damien+Enrique+Juan
  • KIDs (Coordinated by Grenble with significant input from Spain, France, Italy & UK)
    • Requirements for 100k pixel KID array
    • Requirements for multi-chroic pixels
    • Polarisation purity
    • Low-frequency aspect (50-100 GHz)
      • Do we need to motivate this in work package 2?
    • High frequency aspects (100-300 GHz)
    • Readout electronics
    • Calibration and Tests (in combination with work package 6)
    • Contact Person

There was a long discussion about what sort of European priorities, effort and resources would be needed for a large TES effort, especially in parallel to the large US/DOE effort.

  • TES (Damien+GiovanniS+(and maybe Stefano M.? + Michel P.? + S. Withington?)
    • Requirements for 100k pixel TES array
    • Requirements for multi-chroic pixels
    • Polarisation purity
    • Low-frequency aspect (50-100 GHz)
      • Do we need to motivate this in work package 2?
    • High frequency aspects (100-300 GHz)
    • Readout electronics
    • Calibration and Tests (in combination with work package 6)
    • Contact Person
  • HEMT (Spain + Giovanni)
    • Requirements for large numbers
    • Requirements for multi-chroic pixels
    • Polarisation purity
    • Calibration and Tests (in combination with work package 6)
    • Readout electronics
    • Contact Person
  • Cryogenic System (Silvia)
  • And we will still need an "overall" coordinator as well, even if this is "administrative". This will be decided soon, along with the country-by-country "smoothing" of things.
  • There will be a meeting (with videocon capabilities) on Feb. 24 to check that we have no "holes", and to start the administrative work. I will send information soon.
  • Let's make sure we don't look like we're repeating the same work over and over. The text we write will have to make the KID-TES-HEMT differences clear and well motivated. (This, for example, will be the job of the "overall" coordinator below).
  • We need to make sure everyone has some visibility -- this is a very active work-package with a lot of people so everyone will need to try to be flexible. If this is too difficult in an "open" telecon, I suggest we have a closed one later.

A couple of things I want to emphasize:

  1. I think the most important aspect of this work package is the numbers of detectors, rather than new technologies (unless these new technologies help provide/test detectors in bulk, or we think other frequencies are necessary).
  2. I'm a bit worried that we have said what we want to do rather than what needs to be done. What is missing? We should also make sure we're coordinated, rather than doing the same thing in a number of different places.
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Page last modified on February 16, 2017, at 05:52 PM