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Re: [Sphenix-magnet-l] Higher current test

From: "Anerella, Michael D" <mda AT bnl.gov>
To: "Makdisi, Yousef I" <makdisi AT bnl.gov>, "Haggerty, John" <haggerty AT bnl.gov>, "sphenix-magnet-l AT lists.bnl.gov" <sphenix-magnet-l AT lists.bnl.gov>
Cc: "Gupta, Ramesh C" <gupta AT bnl.gov>
Subject: Re: [Sphenix-magnet-l] Higher current test
Date: Mon, 13 Oct 2014 13:03:56 +0000

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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[Sphenix-magnet-l] Higher current test, John Haggerty, 10/10/2014
- Re: [Sphenix-magnet-l] Higher current test, Makdisi, Yousef I, 10/10/2014
  - Re: [Sphenix-magnet-l] Higher current test, Than, Yatming (Roberto), 10/10/2014
  - Re: [Sphenix-magnet-l] Higher current test, Anerella, Michael D, 10/13/2014
    - Re: [Sphenix-magnet-l] Higher current test, Makdisi, Yousef I, 10/13/2014
      - Re: [Sphenix-magnet-l] Higher current test, Gupta, Ramesh C, 10/13/2014
        
        Re: [Sphenix-magnet-l] Higher current test, Makdisi, Yousef I, 10/13/2014
        
        Re: [Sphenix-magnet-l] Higher current test, John Haggerty, 10/13/2014
        
        Re: [Sphenix-magnet-l] Higher current test, Achim Franz, 10/14/2014
        
        Re: [Sphenix-magnet-l] Higher current test, Achim Franz, 10/15/2014
      - Re: [Sphenix-magnet-l] Higher current test, Phillips, David B, 10/14/2014