Star-fst-l mailing list

[videbaek <videbaek AT bnl.gov>]

FYI


-------- Original Message --------
Subject: ESRC Meeting: STAR Forward Silicon Tracker
Date: 2020-10-12 21:14
From: "Hoffman, Caitlin" <hoffman AT bnl.gov>
To: "Craner, Francis" <fcraner AT bnl.gov>, "Sivertz, Michael" 
<sivertz AT bnl.gov>, "Passarello, David J" <passare1 AT bnl.gov>, "Mohamed, 
David" <dmohamed AT bnl.gov>, "Romero, Marcel" <mromero AT bnl.gov>, "Hammons, 
Lee" <hammons AT bnl.gov>, "Christie, William" <christie AT bnl.gov>, "Pak, 
Robert" <pak AT bnl.gov>, "Ye, Zhenyu" <zye AT bnl.gov>, "Videbaek, Flemming" 
<videbaek AT bnl.gov>, "nie AT rcf.rhic.bnl.gov" <nie AT rcf.rhic.bnl.gov>, 
"Capotosto, Michael" <capotosto AT bnl.gov>, "yiyang AT ncku.edu.tw" 
<yiyang AT ncku.edu.tw>, "Bergh, Paul J" <pbergh AT bnl.gov>, "Blydenburgh, 
Tracy R" <blydenburgh AT bnl.gov>, "Campione, Lenny J" <campione AT bnl.gov>, 
"Cirnigliaro, Peter P" <cirn AT bnl.gov>, "Drees, Angelika" 
<drees AT bnl.gov>, "Fliller, Raymond" <rfliller AT bnl.gov>, "Folz, Charles" 
<cfolz AT bnl.gov>, "Gaffney, Michael" <gaffney AT bnl.gov>, "Kusche, Karl" 
<kusche AT bnl.gov>, "Lambiase, Robert" <lambiase AT bnl.gov>, "Levesque, 
Joseph W" <levesque AT bnl.gov>, "Palmer, Mark" <mpalmer AT bnl.gov>, 
"Pearson, Charles E" <pearson AT bnl.gov>, "Poblaguev, Andrei" 
<poblaguev AT bnl.gov>, "Roser, Thomas" <roser AT bnl.gov>, "Sampson, Paul" 
<sampson AT bnl.gov>, "Sullivan, Patrick (BHSO)" 
<Patrick.Sullivan AT science.doe.gov>, "Tuozzolo, Joseph E" 
<tuozzolo AT bnl.gov>, "VanEssendelft, Melvin J" <mvaness AT bnl.gov>, 
"yezhenyu AT uic.edu" <yezhenyu AT uic.edu>
Cc: pak <pak AT rcf.rhic.bnl.gov>


TOPIC: STAR Forward Silicon Tracker materials compatibility
RESCHEDULED: Monday, Oct. 19th
TIME:   3PM
 .......................................
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See Email Thread Below:
 -------- Original Message --------
    Subject: Re: Pre-approval for STAR Forward Silicon Tracker materials

    Date: 2020-09-03 18:58
     From: "Ye, Zhenyu" <yezhenyu AT uic.edu>
    To: pak <pak AT rcf.rhic.bnl.gov>
    Cc: Robert Pak <pak AT bnl.gov>, flemming videbaek <videbaek AT bnl.gov>,
Yi
    Yang <yiyang AT ncku.edu.tw>, Gerard Visser <gvisser AT indiana.edu>,
Maowu
    Nie <nie AT rcf.rhic.bnl.gov>, "Capotosto, Michael" <capotosto AT bnl.gov>


    Yes, we are aware of the compatibility requirement of the cooling
tubes
    and NOVEC, and have selected two candidate tubes made of plastic
based
    on vendor's recommendation.

    The materials that we will use to build FST detector modules,
cooling
    tubes and cables, include

    1. Mechanical structure made of pure PEEK (not carbon fibre. See
page 3
    of Ref [1])
    2. Cooling tubes embedded in each module made of Stainless steel
coated
    with Chroming (see page 3 of Ref [1])
    3. Cooing tubes connecting adjacent modules made of plastic (see
page 27
    of Ref [1])

    4. Flexible PCB, made of Polyimide (see Ref [2])
    5. Glue and Thermal Grease used for Mechanical structure and
flexible
    PCB assembly (see page 3 of Ref [1])

    6. Electronic board, made of FR-4 (see Ref [3])
    7. Inner signal cable, the ones that Mike gave to you for Flammable
test

    8. Glue used for mounting Silicon sensors and frontend readout
chips,
    but they are the same as we used for STAR Intermediate Silicon
Tracker
    (2014-2016). I suppose they are fine.

    [1]

https://indico.bnl.gov/event/9021/contributions/39989/attachments/29767/46442/20200803_FST_Mechanical_YiYang_v4.pdf
[3]
    [2]

https://drupal.star.bnl.gov/STAR/system/files/Datasheet%20for%20hybrid%20v3_0.pdf
[4]
[3]
https://drupal.star.bnl.gov/STAR/system/files/Datasheet%20for%20T-Board%20v3_1_0.pdf
[5]

    We are wondering what kind of info is needed for pre-approval before
we
    start the production.

    Thanks,
    Zhenyu

    > On Sep 3, 2020, at 4:36 PM, pak <pak AT rcf.rhic.bnl.gov> wrote:
    >
    >
    > Hello Zhenyu,
    >
    > I am aware of the flame test for FST cable.  What other materials
are
    > specifically in question?  The detectors themselves and carbon
fiber
    > support structure are benign.  Electronics boards are made of
FR-4,
    > which is a fire resistant version of G10.  NOVEC cooling fluid is

    > standard stuff now.  What you should be concerned about is the
    > compatibility of your cooling tubes and NOVEC cooling fluid, or
leaks
    > may develop over time.  Also there is triboelectric charging
    > (electrostatic build up) from the flowing NOVEC that may introduce

    > leaks, but these are not safety issues.
    >
    > Robert Pak
    >
    >
    > On 2020-09-03 13:11, Ye, Zhenyu wrote:
    >> Dear Robert,
    >> This is Zhenyu from Univ of Illinois at Chicago. I hope you are
doing
    >> well.
    >> I am the STAR FST upgrade project manager.  As you may know, FST
went
    >> through a production readiness review recently and we are about
to
    >> start the detector module, electronic board/cable production. For
this
    >> we would like to get a pre-approval (not sure if this is the
right
    >> name) for the materials we are going to use.
    >> I am wondering if you can tell me what kind of info we should
prepare
    >> for such a pre-approval review?
    >> Thanks,
    >> Zhenyu



Links:
------
[1] https://bluejeans.com/244190854?src=calendarLink
[2] https://www.bluejeans.com/premium-numbers
[3] 
https://indico.bnl.gov/event/9021/contributions/39989/attachments/29767/46442/20200803_FST_Mechanical_YiYang_v4.pdf
[4] 
https://drupal.star.bnl.gov/STAR/system/files/Datasheet%20for%20hybrid%20v3_0.pdf
[5] 
https://drupal.star.bnl.gov/STAR/system/files/Datasheet%20for%20T-Board%20v3_1_0.pdf

--
Flemming Videbaek
senior scientist
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596