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Re: HV board / ASIC
I am sorry: a gas gain of 1.5.10^5 at 1800V
/--------------------------------
/ Yves Van Haarlem
_--~~--_ /
/~/_| |_\~\ / Carnegie Mellon University
|____________| / Department of Physics
|[][][][][][]|:= / Wean Hall room 8404
__| __ |__ \ Pittsburgh, PA 15213
| ||. | == | | \ USA
(| ||__| == | |) \
| |[] [] == | | \ Tel.: +1 412 268-6949
| |____________| | \ +1 412 641-9252
/__\ /__\ \ Fax.: +1 412 681-0648
~~ ~~ \-----------------------------------
On Wed, 15 Oct 2008, Yves Van Haarlem wrote:
> Hi Fernando,
>
>> Have you finalized the gain measurements for the CDC? I need to finalize
>> the ASIC specs by next week and will circulate a spec sheet for comments.
> Yes, we redid the Fe-55 measurements with the %2 interposer and could not get
> rid of the 2nd peak. We also saw that comparing with the normal interposer we
> lose linearity for HV above 1750~V. The results are in GlueX-doc-1079-v8, we
> see a gas gain of 1.5.10^5.
>
> Cheers,
> Yves
>
>
>
>
>>
>> Regards,
>> Fernando
>>
>>
>>
>>>
>>> Cheers and thanks,
>>> Yves
>>>
>>>
>>>
>>> /--------------------------------
>>> / Yves Van Haarlem
>>> _--~~--_ /
>>> /~/_| |_\~\ / Carnegie Mellon University
>>> |____________| / Department of Physics
>>> |[][][][][][]|:= / Wean Hall room 8404
>>> __| __ |__ \ Pittsburgh, PA 15213
>>> | ||. | == | | \ USA
>>> (| ||__| == | |) \
>>> | |[] [] == | | \ Tel.: +1 412 268-6949
>>> | |____________| | \ +1 412 641-9252
>>> /__\ /__\ \ Fax.: +1 412 681-0648
>>> ~~ ~~ \-----------------------------------
>>
>