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Interposer
Hall D Electronics:
Hi Fernando,
I recieved the new interposer, thanks a lot. I tested it and behold:
channels 2,3, and 4 are working again! BUT channel 16 is still dead. Maybe
it's the pre-amplifier as this is the only piece since I saw these dead
channels that wasn't changed. For completeness if the old CLAS preAmp is
used then all 16 channels are alive.
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
~~ ~~ \-----------------------------------
On Wed, 2 Apr 2008, Fernando J. Barbosa wrote:
> Hi Yves,
>
> I am sending you another Interposer via FedX and you should have it tomorrow.
> Let me know if that works.
>
> Regards,
> Fernando
>
>
>
> Yves Van Haarlem wrote:
>> Hi Fernando,
>>
>> I just tested the new cable and ... I still see the same dead channels (4
>> now). To be absolutely sure I hooked up the old CLAS preAMP again and I see
>> signals in all channels. It is not the shaper, not the cable, and all the
>> signals come off the HV board. So one item remains ==> the
>> pre-amplifier+interposer. Is it possible to send one (if there is one
>> available) to CMU so I could try it?
>>
>> Which cable would you like to have back: the old one or the one you just
>> sent me?
>>
>> 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
>> ~~ ~~ \-----------------------------------
>>
>> On Wed, 2 Apr 2008, Fernando J. Barbosa wrote:
>>
>>> Hi Yves,
>>>
>>> Thanks. Just let me know if that solves the problem.
>>>
>>> Regards,
>>> Fernando
>>>
>>>
>>>
>>>
>>> Yves Van Haarlem wrote:
>>>> Hi Fernando,
>>>>
>>>> The new cable just arrived, thanks!
>>>>
>>>> Cheers,
>>>> 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
>>>> ~~ ~~ \-----------------------------------
>>>>
>>>> On Wed, 2 Apr 2008, Fernando J. Barbosa wrote:
>>>>
>>>>> Hi Elke,
>>>>>
>>>>> For tests without a magnet, there is the AGS test line at BNL.
>>>>>
>>>>> For tests with a magnet, you may want to check if the MPS area is
>>>>> available at BNL (that's where E852 ran). Alex may have good contacts
>>>>> there, also.
>>>>>
>>>>> Regards,
>>>>> Fernando
>>>>>
>>>>> Elke-Caroline Aschenauer wrote:
>>>>>> On Wed, 2 Apr 2008, Yves Van Haarlem wrote:
>>>>>>
>>>>>> Dear Yves,
>>>>>>
>>>>>> I think the question is what is the size of the prototype you want to
>>>>>> build and what would you like to study. cosmic data in a magnetic field
>>>>>> or
>>>>>> beam on mini-cdc in B field, or ....
>>>>>> Because if we want to match the situation of Gluex for different things
>>>>>> we
>>>>>> need different magnets.
>>>>>> There was for example the offer to study something at Idaho Accelerator
>>>>>> Center, but that needs more investigation.
>>>>>>
>>>>>> cheers elke
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Date: Wed, 2 Apr 2008 10:36:07 -0400 (EDT)
>>>>>>> From: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
>>>>>>> To: Simon Taylor <staylor@jlab.org>
>>>>>>> Cc: halld-tracking-hw@jlab.org
>>>>>>> Subject: Re: New CDC prototypes
>>>>>>>
>>>>>>> Hi Simon,
>>>>>>>
>>>>>>> Thanks a lot for the info. Could you give more information or a
>>>>>>> contact
>>>>>>> person that might know more concerning this magnet?
>>>>>>>
>>>>>>> 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
>>>>>>> ~~ ~~ \-----------------------------------
>>>>>>>
>>>>>>> On Wed, 2 Apr 2008, Simon Taylor wrote:
>>>>>>>
>>>>>>>
>>>>>>>> Hi, Yves.
>>>>>>>>
>>>>>>>> Regarding the availability of suitable magnets, the short answer is
>>>>>>>> that it
>>>>>>>> would be difficult to find any magnets with sufficient magnetic field
>>>>>>>> or gap
>>>>>>>> size or with the correct orientation for cosmic ray studies such that
>>>>>>>> the
>>>>>>>> magnetic field would be parallel to the straws. Certainly we came up
>>>>>>>> with
>>>>>>>> nothing truly suitable for studying the FDC. The magnet we used in
>>>>>>>> Hall B has
>>>>>>>> a gap of about 15 cm and goes up to ~1.2 Tesla. You could in
>>>>>>>> principle fit a
>>>>>>>> few layers of straws in there, but the magnetic field would be
>>>>>>>> perpendicular
>>>>>>>> to the wires, so that's no good. I have a vague recollection that
>>>>>>>> there may
>>>>>>>> be a magnet at Brookhaven that at least has a large enough gap size
>>>>>>>> (48
>>>>>>>> inches)...
>>>>>>>>
>>>>>>>> Simon
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Yves Van Haarlem wrote:
>>>>>>>>
>>>>>>>>> Hi All,
>>>>>>>>>
>>>>>>>>> As you might know we plan to build one or more smaller prototypes of
>>>>>>>>> the
>>>>>>>>> CDC in order to test the straws in a test beam and magnetic field.
>>>>>>>>> The
>>>>>>>>> first thing I would like to pin down are the dimensions of this new
>>>>>>>>> prototype. In order to use it inside a magnet it has to fit inside
>>>>>>>>> that
>>>>>>>>> magnet (yes indeed). I understood from last review that a magnet
>>>>>>>>> search was
>>>>>>>>> performed for the FDC so I am hoping they could give me some input
>>>>>>>>> on what
>>>>>>>>> is available.
>>>>>>>>>
>>>>>>>>> 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
>>>>>>>>> ~~ ~~ \-----------------------------------
>>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>> ( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
>>>>>> ) `\ -
>>>>>> / '. | +
>>>>>> | `, Elke-Caroline Aschenauer =
>>>>>> \,_ `-/ -
>>>>>> ,&&&&&V Jefferson Lab +
>>>>>> ,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
>>>>>> ,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
>>>>>> | |&&&&&&&;\ 12000 Jefferson Ave +
>>>>>> | | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
>>>>>> | | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
>>>>>> '--' `-.--. | +
>>>>>> \_ | |---' Tel.: 001-757-269-5352 =
>>>>>> `-._\__/ Fax.: 001-757-269-6331
>>>>>> -
>>>>>> +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+
>>>>>>
>>>>>>
>>>
>
- References:
- Re: Cable
- From: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
- Re: Cable
- From: "Fernando J. Barbosa" <barbosa@jlab.org>