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["Ye, Zhenyu" <yezhenyu AT uic.edu>]

Rahul and I spoke on the phone this morning. My understanding is 670mm diameter at the current disk locations is constrained by the requirement to have some space for air flow to the inner part of the cone. If we’d like to increase the disk diameter, we may need to move the disks away from the center. For example, if we move the disks by ~4 inches to the left, we can increase the disk diameter by ~2 inches. (Rahul, please correct me if I am wrong). Yi, how much larger do you need the disk diameter to be?

P.S. Rahul, the latest drawings from Yi Yang and Han-Sheng can be found in the attachment. If you need anything else, please let us know.

Zhenyu

> On Jan 12, 2019, at 8:08 AM, Yi Yang <yiyang AT ncku.edu.tw> wrote:
>
> Dear Rahul and John,
>
> We are making the detailed design of the forward silicon disk and currently we are using 335 mm as the outer radius as the silicon disk.
> We are wondering if there is any room to extend the outer radius?
> So we would like to know the "maximum possible" dimension of the "Si DISKS SUPPORT" (dash-circled) in the attachment.
> Could you please let us know what is the limit in your design now?
> Thanks a lot.
>
> Cheers,
> Yi
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> Yi Yang, Assistant Professor
> Department of Physics
> National Cheng Kung University
> Tainan, 701 Taiwan
> E-Mail: yiyang AT ncku.edu.tw
> Tel: +886-6-2757575 ext.65237
> Fax: +886-6-2747995
> Group Web: http://phys.ncku.edu.tw/~yiyang
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>
> <Question.pdf>

Attachment: ISTdrawing_LHS_190112.pdf
Description: ISTdrawing_LHS_190112.pdf