sPHENIX discussion of the superconducting solenoid

[John Haggerty <haggerty AT bnl.gov>]

Kin,

I don't know for sure; I think the drawings say the inner wall is 10 mm 
5083 aluminum, but at SLAC they lifted the solenoid with a spider that 
fit inside the cryostat like this:

> http://www-project.slac.stanford.edu/slacpix/BaBar/16_mag/to_290.jpg

so I always assumed that it wasn't a problem if a couple of people threw 
their weight around.

sPHENIX itself does not intend to put any load on the cryostat inner 
wall as far as I know.

On 7/10/17 1:28 PM, Yip, Kin wrote:
> Dear Mike, Paul, Jon & Dave,
>
> As Paul Orfin asked below, I sometimes wonder about this too when I saw 
> people walk through the solenoid.
>
> Can we safely walk and stand inside the inner solenoid ?  Approximately 
> how much weight can the inner solenoid handle ?
>
> /Sent from my Verizon LG Smartphone/
>
> ------ Original message------
> *From: *Orfin, Paul
> *Date: *Mon, Jul 10, 2017 12:37
> *To: *Yip, Kin;
> *Cc: *
> *Subject:*RE: Sonny and Joe have taken the half-rack ... waiting for the 
> survey result ... carpenter putting up the railing
>
> Kin,
>
> Has anyone determined the maximum load allowed  on the inner diameter of 
> the solenoid?  I don’t know the details of the inner plate thickness but 
> there may be a weight limit for materials being brought in by foot.  I 
> just want to make sure there is no damage to the solenoid.  I understand 
> that the magnet was built to handle large magnetic forces but 
> concentrated loads from someone’s foot for instance, may not have been 
> taken into design consideration.  Looking at the pictures of people in 
> the magnet made me think of this just now.
>
> Thank you,
>
> Paul Orfin
> Cryogenic Systems, Collider-Accelerator Department
> Brookhaven National Laboratory
> Telephone: (631) 344-2899
>
> *From:*sPHENIX-magnet-l [mailto:sphenix-magnet-l-bounces AT lists.bnl.gov] 
> *On Behalf Of *Yip, Kin
> *Sent:* Monday, July 10, 2017 11:50 AM
> *To:* sphenix-magnet-l AT lists.bnl.gov
> *Subject:* [Sphenix-magnet-l] Sonny and Joe have taken the half-rack ... 
> waiting for the survey result ... carpenter putting up the railing
>
> Hi,
>
> 45 minutes ago or so, I showed Sonny Simaiuta and Joe Dambra where the 
> half-rack was in Bldg. 912.  They have taken it to Superconducting Magnet
>
> Division to make small modification.
>
> I’ve just taken another picture this morning around the Magnet/steel box :
>
> https://collab.external.bnl.gov/sites/sPHENIX-Magnet/Pictures/High%20Field%20Test/Return%20Yoke%20Construction/2017-7-10.jpg
>
> Apparently, the survey was taken late last Friday after the magnet was 
> slightly rotated.  Now, we’re waiting for the survey group to analyze
>
> the data.  Matt (who has been doing the analysis)  is out today and 
> Frank Karl is trying to see whether he can do the analysis   or   they 
> have to wait
>
> for Matt to come back tomorrow.
>
> Richard Meier was moving his cables.   I also saw that a carpenter was 
> installing the railing for the platform (all in Aluminium) in the Lead-End.
>
> So, the schedule  that D. Phillips sent last Friday (below) seems to be 
> materializing (though Dave is not here today).  Hopefully, the riggers 
> and Ray Ceruti’s group can install the Extension this Wed.
>
> Kin
>
> *From:* Phillips, David B
> *Sent:* Friday, July 07, 2017 11:45 AM
> *To:* Ceruti, Raymond B <rayc AT bnl.gov <mailto:rayc AT bnl.gov>>; Yip, Kin 
> <kinyip AT bnl.gov <mailto:kinyip AT bnl.gov>>; Mills, James A <mills AT bnl.gov 
> <mailto:mills AT bnl.gov>>; Hock, Jonathan <jhock AT bnl.gov 
> <mailto:jhock AT bnl.gov>>; Streckenbach, Brian <bstreckenbach AT bnl.gov 
> <mailto:bstreckenbach AT bnl.gov>>
> *Cc:* Kobasiuk, Frederick D <kobasiuk AT bnl.gov 
> <mailto:kobasiuk AT bnl.gov>>; Folz, Charles <cfolz AT bnl.gov 
> <mailto:cfolz AT bnl.gov>>; Anerella, Michael D <mda AT bnl.gov 
> <mailto:mda AT bnl.gov>>; Karl, Francis X <karl AT bnl.gov 
> <mailto:karl AT bnl.gov>>; Ilardo, Matthew <milardo AT bnl.gov 
> <mailto:milardo AT bnl.gov>>
> *Subject:* sPHENIX Magnet plan for next week
>
> sPHENIX Magnet plan for next week:
>
> Friday 7/7 – Riggers place cryostat in correct position
>
> Friday 7/7-Monday 7/10 – Survey confirms cryostat is correctly positioned
>
> Monday 7/10-Tuesday 7/11 – Carpenters install handrails and access 
> ladder to internal Lead End platform.
>
> Wednesday 7/12 – Riggers and Magnet Division install Valve Box Extension
>
> Monday 7/10 - until completed – Drilling/taping holes in return steel
>
> Thursday 7/13 – until completed  - Riggers install return steel (this 
> needs to be coordinated with MD Teck’s working on Dog House connections)
>
> Week of 7/17:
>
> -MD Teck’s continue with Dog House connections
>
> -Riggers install Return Steel and shield blocks for Valve Box Platform
>
> -Carpenters assemble scaffolding for access to External Dog House
>
> -Carpenters install handrails etc for Valve Box Platform
>
> David Phillips
>
> Building 911B
>
> Upton, NY 11973
>
> 631-344-4671, Fax 631-344-5954, Cell 631-804-9477
>
> On site pager 344-3456 then 4267 then your number
>
>
>
> _______________________________________________
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--
John Haggerty
email: haggerty AT bnl.gov
cell: 631 741 3358