ePIC pfRICH mailing list

["Jung, Andreas" <anjung AT purdue.edu>]

...wasn't connected due to a conflict but I can only strongly second that measuring a cylinder is not as trivial as it seems - even a jig with some framing 80/20 or wood to "fit" in circumference and create a template than measure later where space is not at a premium.

cheers
andy


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Associate Prof Andreas Jung - Purdue University
Department of Physics and Astronomy
525 Northwestern Ave, West Lafayette, IN, 47907, USA
Office: +1 765 494 5399 | Email: anjung AT purdue.edu
http://www.physics.purdue.edu/jung/

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From: eic-projdet-pfrich-l-request AT lists.bnl.gov <eic-projdet-pfrich-l-request AT lists.bnl.gov> on behalf of Garg, Prakhar <prakhar.garg AT yale.edu>
Sent: Monday, September 9, 2024 4:01 PM
To: eic-projdet-pfrich-l AT lists.bnl.gov <eic-projdet-pfrich-l AT lists.bnl.gov>; Alex Eslinger <eslinger AT jlab.org>
Subject: Re: [[Eic-projdet-pfrich-l] ] Reminder: Engineering/Design Meeting -- 9 Sep 2024 @ 1300 (1PM) EST

 

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Hi Alex,

My $0.02 @ 32:56 on this recording:

1. The diameter should be measured by measuring the circumference at a few places along z.
   
   
2. Also, the caliper from shaft to the face of milling can give a pretty good radius.
   But that is not ideal because of the backlash in the system, and you aren't measuring the foam directly along z.
   The measurement of 2*\pi*r gives a very good accuracy on the measurement.

Thanks

Prakhar

3. 
   

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From: eic-projdet-pfrich-l-request AT lists.bnl.gov <eic-projdet-pfrich-l-request AT lists.bnl.gov> on behalf of Alex Eslinger <eslinger AT jlab.org>
Sent: Monday, September 9, 2024 2:50 PM
To: eic-projdet-pfrich-l AT lists.bnl.gov <eic-projdet-pfrich-l AT lists.bnl.gov>
Subject: RE: [[Eic-projdet-pfrich-l] ] Reminder: Engineering/Design Meeting -- 9 Sep 2024 @ 1300 (1PM) EST

 

All,

 

See below for the meeting recording. The link will also be posted on Indico, shortly.

 

https://jlab-org.zoomgov.com/rec/share/9BHIfC7ODJlTSmQ4BggaOfj9V5uJJhbeeqO1iN2crdkJv-ZZWmzzBQLifOFJMI4S.Iokr4fdvlAqGYU6d?startTime=1725901333000

Passcode: G7XmBw&#

 

Thanks,
Alex

 

From: eic-projdet-pfrich-l-request AT lists.bnl.gov <eic-projdet-pfrich-l-request AT lists.bnl.gov> On Behalf Of Alex Eslinger
Sent: Monday, September 9, 2024 12:14 PM
To: eic-projdet-pfrich-l AT lists.bnl.gov
Subject: [EXTERNAL] [[Eic-projdet-pfrich-l] ] Reminder: Engineering/Design Meeting -- 9 Sep 2024 @ 1300 (1PM) EST

 

Good morning,

 

Apologies for the late reminder.

 

Please join me for our pfRICH engineering and design meeting today, 9 September 2024 at 1300 (1PM) EST. Typical updates are expected from SBU and Purdue. There were also discussions that took place at the Thursday meeting that took place that we can also try to address:

• Procedure for dry fitting the end rings at SBU
• Assembly needs for pfRICH prototyping for the beam test
• Thermal cycling of mirror samples to know our limitations as we learn more about the beam pipe bakeout for ePIC

 

Indico: https://indico.bnl.gov/event/24518/

Zoom: https://jlab-org.zoomgov.com/j/16028326423?pwd=cmpHc0s3cWMyQWV0enhvQlVmeVJpQT09

 

Meeting ID: 160 2832 6423 Passcode: 3DdgRUoscP

 

Thanks,

Alex