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[董家宁 <jndong AT sdu.edu.cn>]

Hi Gerard,
  I just finished the layout for v3.0 T-board, please find the gerber files 
in the attachment or the following link. 
(https://drupal.star.bnl.gov/STAR/blog/jndong/191204-gerber-files-t-board-v30)
  Since the new year is approaching, I think it will take at least 4~5 weeks 
for production in China after your final approval.

Best,
Jianing

> -----原始邮件-----
> 发件人: "Gerard Visser" <gvisser AT indiana.edu>
> 发送时间: 2019-12-04 05:32:29 (星期三)
> 收件人: star-fst-l AT lists.bnl.gov
> 抄送: 
> 主题: Re: [Star-fst-l] Weekly FST meeting - 12/5/2019 9:30am BNL time
> 
> hi Mike,
>       I think if we truly need more than two or so T-boards for first 
> tests, then 
> this is indeed a sensible approach. Modifying two or three or so, testing 
> everything, making any further changes anywhere (T boards and hybrids) if 
> needed 
> -- hopefully not -- infomed by _complete_ results (pedestals/noise and 
> cosmics) 
> from that testing, and then going for production would maybe be better. But 
> I 
> agree modifying many of the old design doesn't make much sense.
>       Jianing, would the v3.0 layout be ready to fab, or more work needed 
> in your 
> opinion?
> 
>       Gerard
> 
> On 12/3/2019 3:04 PM, Capotosto, Michael wrote:
> > Zhenyu/Gerard and all,
> > 
> > I just wanted to get a jump and get this suggestion out before the 
> > meeting. I've spoken with John Hammond regarding the modifications 
> > required to the current V2.1 T-Boards, and we agreed it will probably be 
> > a few hours of work per board - removing the duplicate components, and 
> > adding worst case ~8 jumper wires, some of which need to cross to both 
> > sides of the board.
> > 
> > If we create new gerbers to match the V3.0  T-Board schematic, we may be 
> > able to do a fast turn turnkey run. Getting approximate quotes from 
> > Sierra Circuits, who we've used for turnkeys before, it would be ~$2,600 
> > to have 10 PCBs fabbed, and stuffed for an 8-day turn. If this is 
> > something that Jianing and Gerard wouldn't have time to work on, John 
> > believes he can make the changes to the gerbers directly, and send the 
> > files out, if Gerard approves the changes listed.
> > 
> > If we were to also make 10 "test stand cables" using the new "purple" 
> > cable, we would be looking at ~$2,400.
> > 
> > It would cost another ~$1,350 to attach these cables to the t-board.
> > 
> > 
> > 
> > This would all come to a total of $6,350. We may be able to get this 
> > price down a little bit if we got quotes from local fab houses as well, 
> > and by combining the job of making 10 "purple cable" assemblies and 
> > assembling them to the pcb - this is a rough number.
> > 
> > I believe this may be a good option - we would have the new revision of 
> > the board with no bodge wires, we'd be using the production cable and 
> > testing with its dielectric properties, etc., a better representation of 
> > the final product; but it may be a tight deadline if we need it by 
> > mid-January. If you think this is something we'd be interested in 
> > pursuing I can start requesting quotes and see if we'd be able to have 
> > more definite numbers by the meeting on Thursday.
> > 
> > Best,
> > 
> > Mike Capotosto
> > 
> > -----Original Message-----
> > From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> On Behalf Of Ye, 
> > Zhenyu
> > Sent: Tuesday, December 3, 2019 1:00 PM
> > To: star-fst-l AT lists.bnl.gov
> > Subject: [Star-fst-l] Weekly FST meeting - 12/5/2019 9:30am BNL time
> > 
> > Dear all,
> > 
> > We will have a weekly FST meeting this Thursday 9:30am BNL time. The 
> > meeting agenda and bluejeans info can be found at 
> > https://drupal.star.bnl.gov/STAR/blog/yezhenyu/forward-silicon-tracker-weekly-meeting
> > 
> > 1. T-board and inner signal cable - Jianing Dong, Mike Capotosto, Gerard 
> > Visser
> > Gerard is reviewing the changes to v2.1 T-board suggested by Mike.
> > 
> > 2. Mechanical Structure - Yi Yang, Han-sheng Li
> > Updates on the status of mechanical structure fabrication and assembly, 
> > cooling soft tube compatibility test, and transportation box design
> > 
> > 3. Module Assembly at Fermilab - Zhenyu Ye
> > Updates on module assembly fixture/tooling design/fabrication
> > 
> > 4. Simulation: Te-Chuan Huang, Krishan Gopal
> > Updates from Te-Chuan on FST geometry modeling
> > 
> > If there is anything else to report/discuss, please let me know.
> > 
> > Best
> > Zhenyu
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