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

Re: Interposer

To: "Fernando J. Barbosa" <barbosa@jlab.org>
Subject: Re: Interposer
From: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
Date: Fri, 4 Apr 2008 10:47:31 -0400 (EDT)
cc: "halld-electronics@jlab.org" <halld-electronics@jlab.org>
In-Reply-To: <47F63096.3040201@jlab.org>
References: <alpine.DEB.1.10.0804011825200.4335@megux5.phys.cmu.edu> <47F37C41.7080605@jlab.org> <alpine.DEB.1.10.0804021032430.12520@megux5.phys.cmu.edu> <Pine.LNX.4.58.0804021037220.30059@elkephalld.jlab.org> <47F39EE5.7000503@jlab.org><alpine.DEB.1.10.0804021257250.12520@megux5.phys.cmu.edu> <47F3BF44.9050003@jlab.org> <alpine.DEB.1.10.0804021527430.2275@megux5.phys.cmu.edu> <47F3E85E.1070502@jlab.org> <alpine.DEB.1.10.0804031709200.10646@megux5.phys.cmu.edu><47F63096.3040201@jlab.org>
Reply-To: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
Sender: owner-halld-electronics@jlab.org
User-Agent: Alpine 1.10 (DEB 962 2008-03-14)

Hall D Electronics:

Hi Fernando,

OK - i will send them overnight today. Do I send them to Lorelei? (If not 
please provide me with another address)

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 Fri, 4 Apr 2008, Fernando J. Barbosa wrote:

> Hi Yves,
>
> That's great news. Please send me your preamp, the bad interposer and the 
> cable (the one I just sent you). I will have the preamp back to you ASAP. I f 
> I have it on Monday, I will try to have it to you by Tuesday.
>
> Let me know if this does not work.
>
> Regards,
> Fernando
>
>
>
>
> Yves Van Haarlem wrote:
>> 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 -
>>>>>>>>             +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+
>>>>>>>> 
>>>>>>>> 
>>>>> 
>>> 
>

Follow-Ups:
- Re: Interposer
  - From: "Fernando J. Barbosa" <barbosa@jlab.org>

References:
- Re: Cable
  - From: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
- Re: Cable
  - From: "Fernando J. Barbosa" <barbosa@jlab.org>
- Interposer
  - From: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
- Re: Interposer
  - From: "Fernando J. Barbosa" <barbosa@jlab.org>

Prev by Date: Re: Interposer
Next by Date: Re: Interposer
Prev by thread: Re: Interposer
Next by thread: Re: Interposer
Index(es):
- Date
- Thread