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Neutrino Factory/Muon Collider Document 146-v1

Helical channel studies and simulation

Document #:
NFMCC-doc-146-v1
Document type:
MuCool Note
Submitted by:
John Urish
Updated by:
John Urish
Document Created:
07 Aug 2000, 12:00
Contents Revised:
07 Aug 2000, 12:00
Metadata Revised:
07 Aug 2000, 12:00
Actually Revised:
14 Sep 2006, 13:35
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Abstract:
V.Balbekov, Fermilab

Helical channel studies and simulations.

Abstract

Results of studies and simulation of a cooler with helical magnetic field
and emittance exchange are presented. Investigation of transverse and
longitudinal nonlinear effects is performed and used for a choice of the
cooler parameters. The main solenoid of 72 m length has field strength 5 T.
Transverse helical field has amplitude 0.3 T and period 1.8 m. A possibility
to generate this field by means of an inclination or shift of the solenoid
sections is considered. With LiH wedge absorbers the cooler provides decrease
of longitudinal emittance by factor 0.87. Transmission reaches 83% being 10%
less in comparison with the same channel without emittance exchange.
Longitudinal perturbation due to transverse magnetic field is responsible for
this degradation. A possibility to weaken this effect by entering of
energy-transverse momentum correlation in the beam is discussed.

Posted muc0146.ps to WWW
This is revision # 3
Posted by balbekov

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Keywords:
COOL_THEORY
Notes and Changes:
V.Balbekov
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