Star-fst-l mailing list

[Xu Sun <sunxuhit AT gmail.com>]

Hi Gerard,

> Did you guys power cycle the readout system after the mysterious noise appeared with GC26?

Yes, we have done it multiple times before we switch to GC13.

> I wonder if power cycling might have fixed it or it was definitely confirmed to be the cable GC26, e.g. you put that one back again and problem appeared again even w/o bias?

To confirm the issue, I just re-connected the GC26 again, and the issue appeared again. It will appear after inner HV ramp to 140V and stays there no matter what the HV is.

> On the T board fitting - is it going to be possible to fasten the T board to mechanical structure with screws and nuts?

I believe it is possible to do that with proper nuts. But I don't know what kind of nuts will be proper. And the outer hybrid will be bend slightly since the T-board will be attached to the MS through the nuts.

Best,

Xu

 

On Mon, Feb 15, 2021 at 10:36 AM Visser, Gerard <gvisser AT indiana.edu> wrote:

hi Xu,

   Did you guys power cycle the readout system after the mysterious noise appeared with GC26? (I assume it was power cycled in the changing to GC13. I wonder if power cycling might have fixed it or it was definitely confirmed to be the cable GC26, e.g. you put that one back again and problem appeared again even w/o bias?

   I can't recall that we ever had such a problem before. Please inspect the pins on the connectors, though I guess you already have done that and would have mentioned if one looked damaged.

   On the T board fitting - is it going to be possible to fasten the T board to mechanical structure with screws and nuts? If not, I'm a little worried that moving the cable around as things get installed may flex something and cause troubles.

      - Gerard

---

From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> on behalf of Xu Sun <sunxuhit AT gmail.com>
Sent: Monday, February 15, 2021 11:12 AM
To: Capotosto, Michael <capotosto AT bnl.gov>
Cc: Star-fst L <star-fst-l AT lists.bnl.gov>
Subject: Re: [Star-fst-l] Weekly FST meeting, Feb 15 8:30am (BNL time)

 

Hi Mike,

My slides can be found in the following link:

https://drupal.star.bnl.gov/STAR/system/files/FstModuleAssemblyFeb08Feb142021.pdf

We will need your help on the new purple cable test shown in slide 3 and gray cable issue discussed in slide 5.

Please let us know your comments.

Best,

Xu

On Sun, Feb 14, 2021 at 11:07 PM Capotosto, Michael <capotosto AT bnl.gov> wrote:

Hey Zhenyu, all,

Monday is a lab holiday so you may be short some people.

--Mike

-----Original Message-----
From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> On Behalf Of Ye, Zhenyu
Sent: Sunday, February 14, 2021 7:30 PM
To: Star-fst L <star-fst-l AT lists.bnl.gov>
Subject: [Star-fst-l] Weekly FST meeting, Feb 15 8:30am (BNL time)

Dear all,

We will have a weekly FST meeting tomorrow starting at 8:30am EST (BNL local time).

https://drupal.star.bnl.gov/STAR/event/2021/02/15/star-forward-silicon-tracker-meeting

0. follow-ups on review and action items *
1. Integration                                                                by Rahul Sharma, Felix Archampong
2. Hybrid and T-board                                                 by Maowu Nie, Mike Capotosto
3. Mechanical Structure                                                by Yi Yang
4. Production module assembly                                    by Xu Sun/Shenghui Zhang

* https://drupal.star.bnl.gov/STAR/event/2021/02/15/star-forward-silicon-tracker-meeting/follow-action-items

Zhenyu

********** ZOOM Meeting ********** **********
ID: 879 0430 2955
Passcode: fSTAR2021
********** ********** ********** ********** ******* _______________________________________________
Star-fst-l mailing list
Star-fst-l AT lists.bnl.gov
https://lists.bnl.gov/mailman/listinfo/star-fst-l
_______________________________________________
Star-fst-l mailing list
Star-fst-l AT lists.bnl.gov
https://lists.bnl.gov/mailman/listinfo/star-fst-l

_______________________________________________
Star-fst-l mailing list
Star-fst-l AT lists.bnl.gov
https://lists.bnl.gov/mailman/listinfo/star-fst-l