[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: HV board / ASIC



Hi Yves,

That sounds very reasonable. I will take a look at the document.

Thanks,
Fernando

Yves Van Haarlem wrote:
> 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
>>>>   ~~              ~~       \-----------------------------------
>>>
>>
begin:vcard
fn:Fernando J. Barbosa
n:Barbosa;Fernando J.
org:Jefferson Lab
adr:Suite #10, 12B3;;12000 Jefferson Ave.;Newport News;VA;23606;USA
tel;work:757-269-7433
version:2.1
end:vcard