The Neutrino Factory and Muon Collider Collaboration (NFMCC) Logo

Neutrino Factory/Muon Collider Document 146-v1

Helical channel studies and simulation

Document #:
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
Viewable by:
  • Public document
Modifiable by:
  • Same as Viewable by

Quick Links:
Latest Version

V.Balbekov, Fermilab

Helical channel studies and simulations.


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 to WWW
This is revision # 3
Posted by balbekov

Files in Document:
Other Files:
Notes and Changes:
DocDB Home ]  [ Search ] [ Last 20 Days ] [ List Authors ] [ List Events ] [ List Topics ]

Security, Privacy, Legal
Fermilab Policy on Computing
Fermi National Accelerator Laboratory

For assistance contact HelpDesk
Last Modified by MT on 6 February 2006
DocDB Home

DocDB Version 8.8.9, contact Document Database Administrators