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[Zhenyu Ye <yezhenyu2003 AT gmail.com>]

Hi Gerard,

I hope we don’t need to use more than 150V but I don’t know it for sure yet. 
We have taken two relatively large cosmic data at 70 and 140V for the outer 
sensor. Need to take such data at a higher voltage to compare. We have been 
able to evaluate the inner sensor yet.

It will be useful indeed to get a clear understanding of the limit of our 
current cables, connectors, and electrical boards (including hybrid). 

Thanks and Best,
Zhenyu

> On Mar 25, 2020, at 10:24 AM, Gerard Visser <gvisser AT indiana.edu> wrote:
> 
> hi Zhenyu, Mike,
>       I think if it is believed that the installed detector will need to be 
> biased at over 150 V we're better look into this with the cable. Zhenyu, 
> what is your latest thinking on the real bias voltage? Mike, if >150 V 
> please look for some commercial standard cables of comparable construction 
> that carry a UL 300 V rating.
>       Thanks,
> 
>               Gerard
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