sPHENIX discussion of the superconducting solenoid

[EdwardOBrien <eobrien AT bnl.gov>]

        Kin and Mike,
         OK. Thanks for the answers. Then what we need
        is a similar document that describes the magnet
        as built. Hopefully one exists.

        Ed


On 4/1/2015 8:45 AM, Anerella, Michael D wrote:
> All,
>
> A cursory read of only the beginning of the paper reveals other
> differences in addition to the number of coil layers.  The conductor
> dimensions are different and the support system is changed.  A detailed
> list of variances could be made if there was some benefit, but I think
> it is better to simply refer to this document for design principles.
>
> Mike
>
> *From:*sphenix-magnet-l-bounces AT lists.bnl.gov
> [mailto:sphenix-magnet-l-bounces AT lists.bnl.gov] *On Behalf Of *Yip, Kin
> *Sent:* Wednesday, April 01, 2015 6:58 AM
> *To:* O'Brien, Edward; Haggerty, John; sphenix-magnet-l AT lists.bnl.gov;
> Mills, James A
> *Subject:* Re: [Sphenix-magnet-l] BaBar Magnet note 233
>
> Hello,
>
> As I said right after John sent us this note (without figure), we
> probably can't use the numbers in the Note directly but we can learn
> from their methods.  Pasquale seems to think the same when I asked him:
>
> " The calculation of 1995 have some meaning because you can see the the
> approach followed in the mechanical design and
>
> the limits assigned to the stress level. This is of some interest if
> you redo the mechanical analysis with larger axial magnetic forces."
>
> He also adds:
>
> "all documents up to 1995 reflects the conceptual design evolution
>   before the construction.
>
> The engineering design was later done by ANSALDO in cooperation with
> INFN and SLAC
>
> in 1996 . The main modification was to change from 1 layer to 2 layers
> coil.
>
> The papers published later than 1997 describe the coil as is."
>
> Kin
>
> Sent from my BNL Verizon Smartphone
>
> ------ Original message------
>
> *From: *EdwardOBrien
>
> *Date: *Tue, Mar 31, 2015 17:18
>
> *To: *Haggerty, John;sphenix-magnet-l AT lists.bnl.gov;Yip, Kin;Mills, James A;
>
> *Subject:*BaBar Magnet note 233
>
>          Hi John, Kin, Jim,
>           This is an excellent summary document of the technical
>          specs of the BaBar magnet. I noticed that it was written
>          in 1995, before the magnet was built. Do we know how
>          much variation there is between the description in this
>          tech note and what Ansaldo finally built for BaBar? Can
>          this document be relied on as an accurate description of
>          the magnet that we have? Thanks.
>
>          Ed
>
>
>
>
> On 3/27/2015 11:58 PM, John Haggerty wrote:
> > Hello,
> >
> > Jim Mills found the paper copy of BaBar Note 233, the solenoid Technical
> > Design Report that Pasquale referred to, and it seems to have many more
> > pages of figures, but our colleagues at SLAC sent me this version of the
> > document.
> >
> >
> >
> > _______________________________________________
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