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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/33361157
Record Status
Checked
Record Id
33361157
Title
Design and characterisation of the focusing solenoidal system for the CLARA high repetition rate electron source
Contributors
Dr DJ Scott (STFC Daresbury Lab., and Cockcroft Inst.) (Pr.Au.)
,
Dr AR Bainbridge (STFC Daresbury Lab., and Cockcroft Inst.)
,
Dr KB Marinov (STFC Daresbury Lab., and Cockcroft Inst.)
,
Dr BL Militsyn (STFC Daresbury Lab., and Cockcroft Inst.)
,
Mr RJ Cash (STFC Daresbury Lab.)
,
Mr TJ Jones (STFC Daresbury Lab.)
,
Dr CS Edmonds (Cockcroft Inst., and Liverpool Univ.)
,
Mr BJA Shepherd (STFC Daresbury Lab., and Cockcroft Inst.)
Abstract
One of the critical components of electron injectors based on RF photoelectron sources is the focusing system. The system typically consists of a Main Focusing Solenoid and a Bucking Coil. Combination of these two solenoids should provide proper focusing of the beam at the exit of the RF cavity and zero longitudinal magnetic field in the photocathode plane to minimise the beam emittance. Imperfection of the solenoid design, manufacturing and alignment frequently leads to asymmetry of the focusing field which has to be compensated with additional coils. In order to eliminate mechanical and magnetic misalignment the CLARA photoinjector solenoids are mounted on one integrated bench and before installation into the beamline have been aligned in the magnet laboratory with simultaneous measurement of the magnetic field. In order to define multipole field components, dedicated measurements of the transverse magnetic field have been done. The amplitudes of the multipoles have been obtained from analysis of the transverse field map. We present here the results of field characterisation.
Organisation
ASTeC
,
ASTeC-AP
,
ASTeC-MaRS
,
TECH
,
CI
,
STFC
Keywords
magnet measurements
,
magnets
,
electron gun
,
solenoid
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Paper In Conference Proceedings
In 8th International Particle Accelerator Conference (IPAC'17), Copenhagen, Denmark, 14-19 May 2017, (2017): 4346-4348.
http://accelconf.…/papers/thpik107.pdf
2017
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