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Re: [Star-fst-l] Safety review before module production
- From: Zhenyu Ye <yezhenyu2003 AT gmail.com>
- To: "Capotosto, Michael" <capotosto AT bnl.gov>
- Cc: "star-fst-l AT lists.bnl.gov" <star-fst-l AT lists.bnl.gov>
- Subject: Re: [Star-fst-l] Safety review before module production
- Date: Wed, 26 Aug 2020 22:08:02 -0500
I think these were set to 70V, because the IST depletion voltage were ~60V.
In order to stay safe for IST sensors and not ramp up HV beyond what is
necessary, the maximum voltage of the ISEGs were set to 70V.
Zhenyu
> On Aug 26, 2020, at 9:41 PM, Capotosto, Michael <capotosto AT bnl.gov> wrote:
>
> Hey guys,
>
> For what it's worth, I saw a handful of the ISEG cards had labelmaker
> labels printed that read something to the effect of "70V max setpoint, do
> not change".
>
> --Mike
>
> -----Original Message-----
> From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> On Behalf Of Zhenyu Ye
> Sent: Wednesday, August 26, 2020 8:42 PM
> To: Gerard Visser <gvisser AT indiana.edu>
> Cc: star-fst-l AT lists.bnl.gov
> Subject: Re: [Star-fst-l] Safety review before module production
>
> I don’t know. Gerrit's slides only show a 60V nominal operational voltage.
>
> Zhenyu
>
>> On Aug 26, 2020, at 7:32 PM, Gerard Visser <gvisser AT indiana.edu> wrote:
>>
>> hi Zhenyu,
>> I think we can make that work. The fine print on connector datasheets
>> has to be checked, I didn't do just now.
>> Do you happen to know (w/ documentation preferably) what voltage we
>> claimed as max operating voltgae in the IST safety review?
>>
>> Gerard
>>
>>
>> On 8/26/2020 8:01 PM, Zhenyu Ye wrote:
>>> 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-sili
>>>>> con-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-sili
>>>>> con-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.
>>>>>>>> _______________________________________________
>>>>>>>> Star-fst-l mailing list
>
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-
[Star-fst-l] Safety review before module production,
Ye, Zhenyu, 08/19/2020
-
Re: [Star-fst-l] Safety review before module production,
Aschenauer Elke-Caroline, 08/19/2020
-
Re: [Star-fst-l] Safety review before module production,
Ye, Zhenyu, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Gerard Visser, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Zhenyu Ye, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Gerard Visser, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Zhenyu Ye, 08/26/2020
- Re: [Star-fst-l] Safety review before module production, Capotosto, Michael, 08/26/2020
- Re: [Star-fst-l] Safety review before module production, Zhenyu Ye, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Zhenyu Ye, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Gerard Visser, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Zhenyu Ye, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Gerard Visser, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Ye, Zhenyu, 08/26/2020
-
Re: [Star-fst-l] Safety review before module production,
Aschenauer Elke-Caroline, 08/19/2020
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