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[董家宁 <jndong AT sdu.edu.cn>]

Hi Zhenyu,
  5. Are the two outer sensors electrically isolated on the hybrid?
  The two outer sensors on the outer hybrid share the same ground and the 
same high voltage. 
  As shown in the attached picture, two outer sensors are connected to the 
same high voltage (SUB0, marked in red box) through two resistors (R4 & R5) 
respectively.
  
  Please let me know if I have any misunderstanding.
  Thanks!

Best,
Jianing


> -----原始邮件-----
> 发件人: "Ye, Zhenyu" <yezhenyu AT uic.edu>
> 发送时间: 2019-09-24 01:42:27 (星期二)
> 收件人: "star-fst-l AT lists.bnl.gov" <star-fst-l AT lists.bnl.gov>
> 抄送: 
> 主题: [Star-fst-l] Meeting with Fermilab Engineers for module assembly
> 
> Dear all, 
> 
> Last Thursday I had a meeting with Fermilab SiDet engineers and 
> technicians. We went through the FST module design, and module assembly 
> procedure. Below are some questions / action items.
> 
> For Yi and Hang-sheng:
> 1. What is the surface smoothness of the mechanical structure made by the 
> injection-mold method from EASTON?
> 2. What type of screws are used for fixing the module in the holding frame, 
> M3, M4 or?
> 3. Can we change the holding frame/box so that the box can be opened and 
> the module be accessed from both sides?
> 4. Update the CAD file with separated outer sensors? Check the dimensions 
> of the inner and outer sensors to make sure they match with the sensor 
> designs.
> 
> For Jiangning and Gerard:
> 5. Are the two outer sensors electrically isolated on the hybrid?
> 
> For Zhenyu
> 7. What unit does the UIC machine shop work with, mm or inch?
> 
> Can you please provide the requested information by this Thursday?
> 
> Thanks and Best,
> Zhenyu
> 
> 
> 
> 
> 
> 
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Attachment: two outer sensors.png
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