[Clas12_rich] RICH status update

Fri Jul 22 08:52:55 EDT 2016

Dear Tyler et al.,

I don’t know if you are aware that on Friday we have our weekly RICH meeting.
I don’t think you are interested in following every meeting but if you have something you want to discuss (for instance Tyler's questions of the e-mail below) you can join us.
You can also subscribe to the RICH mailing list and you will receive notice about the meetings

The instructions to connect to the meeting are in the following e-mail by Marco Contalbrigo.

Cheers
patrizia
----------------------------------------------------
Begin forwarded message:

From: Marco Contalbrigo <mcontalb at fe.infn.it>
Subject: [Rich] CLAS12 RICH Meeting
Date: 21 luglio 2016 05:28:37 GMT-4
To: rich at jlab.org

Dear all,
the next RICH meeting will be tomorrow, July 22nd, at:

        9:00 am Argonne time
        10:00 am Jlab time
        16:00 pm Italy time
        15:00 pm UK time
        11:00 am Chile time

We will use BlueJeans system: you can access the meeting directly at
https://bluejeans.com/747721006
Below are additional BlueJeans connection informations.

Please, upload your presentations before the meeting in the RICH wiki web page:
http://clasweb.jlab.org/wiki/index.php/2016_RICH_meetings

Marco

---------------------------------------------------
# Patrizia Rossi
# Jefferson Lab 
# 12000 Jefferson Avenue
# Suite 5
# Newport News VA 23606 (USA)
# e-mail: rossi at jlab.org
# phone: +1 (757) 269 7740
# fax: + 1 (757) 269 5800
# cell: +1 (757) 528 7606

> On 18/lug/2016, at 09:19, Tyler Lemon <tlemon at jlab.org> wrote:
> 
> Hello,
> 
> This is an update on the status of RICH components. Please let us know if there are any corrections or anything to add.
> 
> 
> 
> There have been six total spherical mirrors delivered and stored in the EEL 121b cleanroom.  Four (C2, C3, C4, C5) were measured using a CMM.  Mirror side lengths and thicknesses have been analyzed using the CMM data by INFN and DSG.  Two more spherical mirrors were delivered on July 15, 2016.  A final shipment of four mirrors is expected to be delivered by the end of July.  After shipment, there is one month to determine if they meet the desired specs and accept the mirror.  Mirrors C2, C3, C4, and C5 have been accepted.  The two mirrors currently at JLAB and the four expected will be measured by CMM using a procedure developed to allow better analysis of these mirrors.  The spot tests using the light source, CDD camera, and mounting system will be performed for all mirrors.  All mirrors will need to be shipped for their final reflective coating.  
> 
> Twenty aerogel tiles were delivered to JLAB and visually inspected.  Six more tiles were expected in June and eight partial tiles are expected in July.  Tiles are stored in dry boxes in EEL 12lb cleanroom’s gowning area.  Tiles have been taken to CUA in Washington, DC by INFN for testing. 
> 
> Pre-production electronic boards are expected by the end of July and will be tested at JLAB.  Production boards are expected to be shipped by end of summer 2016 after pre-production board acceptance.  Assembly of electronics can begin once electronics arrive.  Electronics will be assembled in EEL 124 or EEL 121b, depending on space availability.
> 
> Forward Carriage Level 3 has been approved for the location of air cooling system compressors, tank, and valve panel (see email on June 24, 2016).  Forward Carriage Level 2 is expected to be the location for the power supplies and electronic components for the detector.
> 
> The assembly structure and other structural components are expected to arrive at JLAB in September.  Bolting the assembly structure to the floor for anchoring in both EEL 124 cleanroom and Hall B has been approved (see Bob’s email on July 15, 2016).  It is being confirmed that space in EEL 124 will be free for assembly (see Walt’s email on July 14, 2016).  Assembly will start in October or as soon as space is available in EEL 124.  
> 
> PRs have been submitted for all interlock system components and buyers have been assigned.  PRs for air cooling and nitrogen purge systems have been submitted.  A quote for the air cooling system pressure transducer is still needed and its PR will be submitted as soon as the quote is received. 
> 
> Considering the above status, there are the following questions:
> 
> 1.       What are the names for the two mirrors received on July 15?
> 2.       When should CMM measurements be arranged?
> 3.       As discussed in DSG-INFN meetings last week, has a procedure for what CMM measurements to be taken been developed?
> 4.       Will the spot tests with the light source and CCD camera for Mirrors C2, C3, C4, and C5 be repeated with the mirror mount?
> 5.       When will light source and CCD camera return to JLAB for spot tests of mirrors received?
> 6.       When will the mirrors be shipped for their final coating?
> 7.       Did the aerogel shipment expected in June arrive at JLAB?
> 8.       What were the results of the aerogel testing at CUA in Washington, DC?
> 9.       When is the next shipment of aerogel expected?
> 10.   Has Forward Carriage Level 2 been approved as the definite location for the electronics racks in the Hall?
> 11.   Has the bolt size been determined for the assembly structure mounting?
> 12.   Where will the pre-production electronics be tested?
> 
> 
> 
> Best regards,
> 
> Tyler
> 

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