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[Han-Sheng Li <acidhf AT gmail.com>]

Hi Jianing,   

Thanks for your clarification.

Yes, you are right! The height difference between inner hybrid and T-board will be 5.35 mm, and your descriptions about the dimensions are the same as what I have.

 

I agree that the tail lengths are enough for the connections, but for the outer hybrid, since the tail length exactly matches with the dimension of mechanical structure, there is no extra space for the connection. 
Therefore, I would suggest that the tail length of outer hybrid increase 1~2 mm.

Best regards,

Han-Sheng      

董家宁 <jndong AT sdu.edu.cn> 於 2019年7月13日 週六 上午11:45寫道：

Hi Hansheng,

    Thanks for the reply.

    So the height difference between T-board and outer hybrid can be elevated to 6.2 mm (increased by 2.1 mm), while the height difference between inner hybrid and T-board will be decreased to 5.35 mm (7.45 - 2.1 = 5.35 mm). Is that right?

    As for the tail length of inner hybrid, the distance between the center of connector and the center of circle is 304.75 mm in current design, and this dimension is 301.75 mm (295 + 6.75 = 301.75 mm) for mechanical structure, as shown in the pdf file "FST all element 0712 compositions ncku-2".

    For the tail length of outer hybrid, the distance between the center of connector and the center of circle is 312.25 mm in current design, which is the same as that for mechanical structure(295 + 17.25 = 312.25 mm). And the height difference between outer hybrid and T-board can be used to place the connectors exactly. 

   It seems that the tail lengths are enough for the connection. Would you like to give me your suggestions? 

   Please correct me if there is any misunderstanding.

   Thanks!

Best,

Jianing

-----原始邮件-----
发件人:"Han-Sheng Li" <acidhf AT gmail.com>
发送时间:2019-07-13 01:30:18 (星期六)
收件人: "董家宁" <jndong AT sdu.edu.cn>
抄送: star-fst-l AT lists.bnl.gov
主题: Re: [Star-fst-l] Dimensions for T-board and hybrids

Hi Jianing, 

Thanks for your reply.

The height difference between T-board and outer hybrid, indeed, is 4.1 mm.
However we can elevate the height difference to 6.2 mm by some washers behind T-board (see the pdf file:" FST all element 0712 compositions ncku-1"), and in doing so , the connector A (on your last slide) will be elevated as well; considering the tail of inner hybrid is flexible in space, the connector A should be able to link inner hybrid.

For the tail lengths of hybrids, I was wondering if they are enough to link connectors, fixed on the T-board (see the pdf file:" FST all element 0712 compositions ncku-2").

Thanks!

Best regards,

Han-Sheng    

董家宁 <jndong AT sdu.edu.cn> 於 2019年7月12日 週五 下午1:28寫道：

Hi Hansheng,

  Thanks for the documents.

  The latest documents of dimensions and CAD files for hybrids and T-board can be found in the attachments. Please double check.

  Some dimensions have been updated, which are highlighted in red in the document ("190712_Dimensions of hybrids & T-board in new design.pdf") and are also listed below.

  T-board:

  1. The diameter of four mechanical holes is increased to 2 mm.

  2. The location of two mechanical holes is modified. The distance from them to the long side is increased from 1.55 mm to 5.55 mm.

  Inner hybrid:

  1. The tail length is increased by 3 mm, as there is a height difference between the inner hybrid and T-board.

  Since the height difference is 7.45 mm and the height of two connected male and female connectors is about 6.2 mm, the tail length must be increased by 1.25 mm at least. In current design, the tail length is increased by 3 mm to ensure the connection.

  Outer hybrid:

  No change.

  But I am a little confused. The height difference between T-board and outer hybrid seems to be 4.1 mm (Am I right?), but the height of two connected connectors is about 6.2 mm. Is that enough to place the connectors?

  Please correct me if there is any misunderstanding.

  Thanks!

Best,

Jianing

-----原始邮件-----
发件人:"Han-Sheng Li" <acidhf AT gmail.com>
发送时间:2019-07-12 07:14:45 (星期五)
收件人: star-fst-l AT lists.bnl.gov
抄送:
主题: [Star-fst-l] Dimensions for T-board and hybrids

Hi Jianing, 

Please find the documents for the dimensions of T-board and hybrids in the attachment.

And please let me know if there is any for information we need to provide.

Thanks!

Best regards,

Han-Sheng