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<div class="moz-cite-prefix">Dear Xiaochao,<br>
<br>
Thanks for your detail calculation. Even I don't understand all
the terms fully, I have comment on your results as follows:<br>
1) The ideal length is 194*(1.5+0.5+2*0.12)=434.56mm, plus both
6mm endplates, the total length is 447mm. I don't understand how
you get 481mm.<br>
<br>
2) I don't agree on the big hole on the bottom endplate. The
pressure is put on the module through this endplate, the big hole
will lead the force nonuniform on the scintillor , and will break
the scitilltors. In fact, the fiber can be insert into the module
through the small holes as your original draft, not the big hole.<br>
<br>
3) We will use the assemble tool to provide the 500kg/1000kg
compression as Alice did, instead of the 2.5mm nuts.<br>
<br>
4) Alice EMCal only use 4 side sheets for each module, no bar
inside. If we plan to use side sheets also, do we still need the
2.5mm bar? As I know from Alice also, they use the same length
side sheets for all the modules. If the module is shorter than the
sheet, they will add some meterial(forget what's it). They also
put few spring reed(蝶形簧片) between the endplates inside the module
to keep tension of the sheets. <br>
<br>
5) As your plot show us, many shashlyk modules will be mounted on
one big support plate from the top endplate. I don't know how
importan for the experiment to use this one side support scheme. I
think it will be ease for us to design the module with two end
support scheme. In order to reach enough support strength, I
believe two end support need less material than one end support.<br>
<br>
<br>
Cheers,<br>
Cunfeng<br>
<br>
在 2015/11/25 6:04, Xiaochao Zheng 写道:<br>
</div>
<blockquote
cite="mid:995208969.8879979.1448402689598.JavaMail.zimbra@jlab.org"
type="cite">
<pre wrap="">Dear All:
I thought about the module assembling process and various requirements on the compression, load, supporting, etc. I have attached some calculation and preliminary assembling process design. The module structure is attached in a separate PDF file. (For some reason I could not import the image into WORD without distorting it.)
Please send me comments.
Thanks,
Xiaochao
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