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[Alexander Bazilevsky <shura AT bnl.gov>]

Dear Bob,

Just in case it makes any difference or causes any problems, below are some numbers from sPHENIX (which may be considered as another candidate for eRHIC detector, at 8 o'clock):

Solenoid: z=+/-187cm, r1=140cm, r2=173cm

Detector outer radius is 260cm (concluded with Hadronic calorimeter with r1=178 and r2=260 which also serves as a flux return)

Regards,

Sasha.

On 3/30/17 1:57 PM, Alexander Kiselev wrote:

  Bob,

  please find two files attached (solenoid schematics and overall
BeAST detector 3D picture).

  The gray volume (cryostat) is defined by the following 4 sections
(all values in mm):

   z     r1     r2

 -1830  1640   1850
 -1610  1370   1850
  1610  1370   1850
  2000  1680   1850

  In a similar way, the return yoke (blue volume) is defined by:

   z     r1     r2

 -2500  2700   3000
 -1200  2000   3000
  1200  2000   3000
  2500  2700   3000

  Red volumes are coils. I can give you locations, sections and
current densities if needed. The configuration was optimized in
a way to 1) be compact, 2) provide more or less homogeneous field
in the TPC volume, 3) provide specific field line configuration
inside the gaseous RICH volume in order to minimize Cerenkov ring
distortions.

  We roughly checked with Brett at that time (a year ago) that there
was no major screw up on my side with the basic design parameters.

  Best regards,
    Alexander.



On Thu, 30 Mar 2017, Palmer, Robert wrote:

Alexander

What is the length, inside radius and thickness of your central detector solenoid, and the overall radius of the detector?

Bob

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-- 
Alexander Bazilevsky
Brookhaven National Laboratory, Bldg. 510D, 2-232
Upton, NY 11973 Tel: 631-344-3712
Email: shura AT bnl.gov
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