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Neutrino Factory/Muon Collider Document 281-v1

Modeling solenoids using coil, sheet and block conductors

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MuCool Note
Submitted by:
John Urish
Updated by:
John Urish
Document Created:
03 Nov 2003, 12:00
Contents Revised:
03 Nov 2003, 12:00
Metadata Revised:
03 Nov 2003, 12:00
Actually Revised:
14 Sep 2006, 13:35
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A new current block routine has been written that offers a simple and accurate method of describing solenoid fields in ICOOL. Blocks are convenient because (1) there is a one-to-one correspondence between these elements and physical magnet coils, (2) the current density can be entered directly in amps/mm2, and (3) one can avoid infinities that arise from asking for field points at arbitrary locations in the conductor. We have found that the new routine generates fields in the beam aperture with relative field accuracy ~10-3 at the worst spots and considerably better over most of the aperture. The accuracy is also fairly good in the conductor region, except for the area in the immediate vicinity of the conductor edges.

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