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Re: Cable
Hall D Electronics:
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 -
>>>> +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+
>>>>
>>>>
>
- Follow-Ups:
- Re: Cable
- From: "Fernando J. Barbosa" <barbosa@jlab.org>