[Solid_gem] monthly GEM meeting on Nov. 27

Tue Nov 26 16:53:16 EST 2013

Dear Shouyang,
I won't be able to attend the meeting tomorrow so I quickly looked at 
your slides
and it looks like great progress were made with the apv25 electronics. I 
have a few suggestions that could help.

- From the experience we had with this system at UVa I would suggest 
that you check the connection between the APV25-FE and flexible 
Panasonic-to-ZIF adapter.
A bad connection of the ZIF to the FE card  (which can happen very 
easily) would lead to the spikes that you see in the bad event that
you referred too in your slides. It does not necessarily mean a problem 
with the card.

- And to make things even easier, you could try to get from Evaristo or 
Paolo the newly produced APV25-FE cards with
Panasonic connectors instead of ZIF connectors so you won't need the 
flex adapter to connect to the chamber.
A few prototypes of these cards had been produced earlier this year by 
Paolo Musico to get rid of the flex-adapter that is source of a lot of 
noise and
bad connection problems. This way in your future tests and commissioning 
of the APV25-MPD electronics you would not have to worry abut bad 
connection.

Hope that helps

Kondo

On 11/26/2013 9:18 AM, Shouyang Hu wrote:
> Hi all,
>      We got some reasonable results last week,so we have made 
> important progress in our work,and I'd like to talk about it in the 
> meeting.
>
> Regards
> Shouyang
>
>
> On Tue, Nov 26, 2013 at 11:15 AM, licheng8 at mail.ustc.edu.cn 
> <mailto:licheng8 at mail.ustc.edu.cn> <licheng8 at mail.ustc.edu.cn 
> <mailto:licheng8 at mail.ustc.edu.cn>> wrote:
>
>     Hi all,
>     In this monthly GEM meeting, I will share my test results about
>     APV25 on my FEE board for GEM detector. The title of my report is
>     "Test of APV25 on FEE board for GEM detector". I hope to discuss
>     the test results and my present work as well as my future work
>     with you.
>     This is my first time to appear in this meeting, please allow me
>     to have a breif introduction to myself. I am ??, Cheng Li, a
>     student who works on the design of GEM detector electronics. I am
>     directed by Professor Shubin Liu in FELab of modern physics
>     department of USTC. I am interested in the design of electronics
>     for particle detection, and I am glade to talk with you on this
>     meeting. Your advice and suggestions are appreciated.
>     Best regards
>     Cheng Li.
>     ------------------------------------------------------------------------
>
>     Fast Electronic Lab,
>     Department of Modern Physics of USTC,
>     HeFei,China
>
>     *From:* Jianbei Liu <mailto:liujianb at ustc.edu.cn>
>     *Date:* 2013-11-23 00 <tel:2013-11-23%C2%A000>:04
>     *To:* Solid GEM <mailto:solid_gem at jlab.org>
>     *Subject:* [Solid_gem] monthly GEM meeting on Nov. 27
>     Hi all,
>     Our November GEM monthly meeting will take place next Wednesday,
>     Nov. 27. There is a particular matter we may want to talk about
>     before the meeting this time. That is the meeting time. As we
>     know, the US is back to the normal time. Thus the time difference
>     between Jlab and China is now 13 hours instead of 12 hours
>     previously. This means our monthly meeting would start at 7:30am
>     at Jlab if we were to stick to the starting time of 8:30pm in
>     China. I believe it's very unlikely that 7:30am would be an
>     acceptable time for people at JLab. So I would propose that we
>     move our monthly meeting back half an hour, namely, we start the
>     meeting at 8am at JLab or 9pm in China. Even though 8am may be
>     still a bit too early for people at JLab, I am afraid we can't
>     push the meeting back any more. It would otherwise be too late for
>     people in China. Please speak up if the proposed new meeting time
>     won't work for you or if you have any other ideas or suggestions
>     on the meeting time during "winter!
>       time".
>     Last but not least (or even more important), please let me know if
>     there is anything you want to show at the meeting. The skeleton
>     agenda is at
>     https://hep.ustc.edu.cn/indico/conferenceDisplay.py?confId=8
>     Looking forward to hearing your feedback.
>     Thanks,
>     Jianbei
>     _______________________________________________
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>
>
>
> -- 
> Department of Nuclear Physics
> China Institute of Atomic Energy
> P.O.Box275(18), Beijing, 102413
> China
>
>
>
>
>
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-- 
=============================================
Dr Kondo Gnanvo
Research Scientist, University of Virginia
Department of Physics
382 McCormick Rd.
Charlottesville, VA 22904-4714
Phone (UVa) 434-924-6796
Fax (UVa) 434-924-4576
=============================================

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