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[Zhenyu Ye <yezhenyu2003 AT gmail.com>]

Hi Gerard, It seems that 140V can do the job for the prototypes. What is the 
maximum voltage allowed by the cables/hybrids/boards?

Zhenyu

> On Aug 26, 2020, at 6:55 PM, Gerard Visser <gvisser AT indiana.edu> wrote:
> 
> hi Zhenyu,
>       Is the max bias voltage (operating, on the installed detector) 
> decided yet?
> 
>       - Gerard
> 
> 
> On 8/26/2020 7:10 PM, Ye, Zhenyu wrote:
>> Below are the list of things I think we may want to get pre-approval and 
>> the responsible person. It would be good if we can collect all the info 
>> (material, data sheets, flammability, anything else?) by the end of this 
>> week. Please have the info summarized in slides/word document and upload 
>> to 
>> https://drupal.star.bnl.gov/STAR/event/2020/08/24/star-forward-silicon-tracker-meeting/safety-pre-approval-materials
>> Maowu: hybrid, T-board
>> Michael/Gerard: inner signal cable, connectors
>> Yi: flexible cooling tubs, mechanical structure, hybrid and MS gluing and 
>> thermal grease
>> Zhenyu: glue/encapsulate used for APV and silicon sensor assembly
>> If I miss anything, please let me know.
>> Thanks,
>> Zhenyu
>> On 
>> https://drupal.star.bnl.gov/STAR/event/2020/08/24/star-forward-silicon-tracker-meeting/safety-pre-approval-materials
>> attachment you can find the IST slides for safety review that Flemming 
>> found. What we are trying to now is not safety review so not exactly the 
>> same.
>>> On Aug 19, 2020, at 10:54 PM, Aschenauer Elke-Caroline <elke AT bnl.gov> 
>>> wrote:
>>> 
>>> Zhenyu,
>>> 
>>> for sure making sure all is compliant with safety is a good idea, but I 
>>> think I would start with a list of things we use and pass it on to the 
>>> safety committee and ask they see any issues. I think we do not need a 
>>> review. If there are issues we deal with it. I personally think there 
>>> should be none.
>>> Also this would be again more work on Rahul, and he is already overloaded.
>>> 
>>> Cheers elke
>>> 
>>>> On Aug 19, 2020, at 22:56, Ye, Zhenyu <yezhenyu AT uic.edu> wrote:
>>>> 
>>>> Dear all,
>>>> 
>>>> As the production starts ramping up, I think we should try to conduct a 
>>>> safety review asap to get pre-approval of components/materials that will 
>>>> be used in the detector module production soon. These would include all 
>>>> the materials to make the detector modules, especially Chroming used to 
>>>> coat the cooling tubes, glue/thermal grease used for hybrid/MS assembly 
>>>> at NCKU in the next few weeks. We can also include the materials used 
>>>> for APV/Silicon sensor assembly as well.
>>>> 
>>>> Shall we also include the other things, such as the T-board, cable, 
>>>> cooling tubes?
>>>> 
>>>> Zhenyu
>>>> 
>>>>> On Jul 31, 2020, at 8:20 AM, Gerard Visser <gvisser AT indiana.edu> wrote:
>>>>> 
>>>>> hi Zhenyu,
>>>>>   I believe someone from BNL from the project (Rahul? Flemming?) needs 
>>>>> to consult with the appropriate safety officers to get advanced 
>>>>> clearance of anything doubtful in the design, before production. This 
>>>>> is how it went for instance with the custom cables used in IST and SSD 
>>>>> - the cables were not official rated cables, rather only "by design 
>>>>> similar" to such, and we submitted the documentation and samples 
>>>>> _before_ detector production (but of course, after cable production, 
>>>>> which was an investment that had to come first) for approval. The 
>>>>> documents were examined, I believe at least one of the cables was given 
>>>>> a burn test at BNL, and we got approval to use. Then in the safety 
>>>>> review before installation we just referenced that approval and no 
>>>>> problems. There was a similar pre=approval process for the Wiener MPOD 
>>>>> power supplies, taken care of in the time of FGT detector construction.
>>>>>   Flemming could correct this, but I don't believe such actual safety 
>>>>> approval is within the scope of this review or committee. But a plan to 
>>>>> get approval where needed, must be.
>>>>>   Sincerely,
>>>>> 
>>>>>           Gerard
>>>>> 
>>>>> 
>>>>> On 7/31/2020 9:10 AM, Ye, Zhenyu wrote:
>>>>>> I don’t know when the safety review will take place, but we certainly 
>>>>>> need the ES&H clearance before the actual production starts, because 
>>>>>> we can’t have all the modules produced and then learn some of them do 
>>>>>> not meet the requirement.
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