sPHENIX discussion of the superconducting solenoid

["Makdisi, Yousef I" <makdisi AT bnl.gov>]

Hello Mike,

   Thanks I stand corrected. That is why we added the idea that we need a
simulation (Ramesh's).

Yousef

On 10/13/14 9:03 AM, "Anerella, Michael D" <mda AT bnl.gov> wrote:

>Yousef,
>Just to be clear - I said the forces should not be higher without iron.
>Ramesh of course is the expert and has since made some estimates.
>Regards,
>Mike
>
>
>
>
>-----Original Message-----
>From: sphenix-magnet-l-bounces AT lists.bnl.gov
>[mailto:sphenix-magnet-l-bounces AT lists.bnl.gov] On Behalf Of Makdisi,
>Yousef I
>Sent: Friday, October 10, 2014 1:26 PM
>To: Haggerty, John; sphenix-magnet-l AT lists.bnl.gov
>Subject: Re: [Sphenix-magnet-l] Higher current test
>
>Hello John,
>
>    Mike Anerella had a brief discussion on this issue. Mike thinks with
>no steel, there is minimal forces on the coils. But he fringe field in
>the area could be the problem.
>    We were thinking that one can calculate the forces as well as the
>fringe fields to see the severity. Of course, then related issue would be
>the need for a high current power supply as well as quench protection.
>
>Regards,
>   Yousef
>
>On 10/10/14 1:18 PM, "John Haggerty" <haggerty AT bnl.gov> wrote:
>
>>I asked Pasquale what they did at Ansaldo to test the BaBar solenoid,
>>and I asked him about possibly coming to BNL for a day or two at some
>>point:
>>
>>> -------- Forwarded Message --------
>>> Subject: Re: BaBar
>>> Date: Fri, 10 Oct 2014 13:33:51 +0200
>>> From: fabbric <pasquale.fabbricatore AT ge.infn.it>
>>> To: John Haggerty <haggerty AT bnl.gov>
>>>
>>> John,
>>>
>>> so, very soon, you will have the coil in your lab. That's very good.
>>>
>>> Coming to the test, we did a partial test at Ansaldo without the iron
>>>yoke.
>>> The current was limited at 1/3 of the nominal current just for
>>>avoiding  problems with magnetic forces. However some not negligible
>>>fring field  was present (you need a large area around the coil  free
>>>of magnetic materials and limited access)..
>>>
>>> Next year I will have to go to Fermilab. If you inform me about your
>>>plans  I can try to couple visit to Fermilab with a visit to BNL
>>>
>>> Best regards
>>>
>>> Pasquale
>>>
>>> --
>>> Dr. Pasquale Fabbricatore
>>> INFN Sezione di Genova
>>> via Dodecaneso 33, 16146 Genova Italy Direct tel  + 39 010 3536340
>>> Laboratory  + 39 010 3536437 Secret.fax  + 39 010 313358
>>> E-mail   pasquale.fabbricatore AT ge.infn.it
>>> WEB page  http://www.ge.infn.it/~fabbric/
>>
>>-- 
>>John Haggerty
>>email: haggerty AT bnl.gov
>>cell: 631 741 3358
>>
>>
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