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Title: Production of high intensity electron bunches for the SLAC Linear Collider

Abstract

This thesis describes the design and performance of a high intensity electron injecfor for the SLAC Linear Collider. Motivation for the collider and the specifications for the injector are discussed. An analytic theory of the bunching and capture of electrons by rf fields is discussed in the limit of low space charge and small signal. The design and performance of SLAC's main injector are described to illustrate a successful application of this theory. The bunching and capture of electrons by rf fields are then discussed in the limit of high space charge and large signal, and a description of the design of the collider injector follows. In the limit of high space charge forces and large rf signals, the beam dynamics are considerably more complex and numerical simulations are required to predict particle motion. A computer code which models the longitudinal dynamics of electrons in the presence of space charge and rf fields is described. The results of the simulations, the resulting collider injector design and the various components which make up the collider injector are described. These include the gun, subharmonic bunchers, traveling-wave buncher and velocity-of-light accelerator section. Finally, the performance of the injector is described including the beammore » intensity, bunch length, transverse emittance and energy spectrum. While the final operating conditions differ somewaht from the design, the performance of the collider injector is in good agreement with the numerical simulations and meets all of the collider specifications. 28 refs.« less

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
OSTI Identifier:
5911088
Report Number(s):
SLAC-319
ON: DE88001331
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: Thesis (Ph.D). Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM BUNCHERS; BEAM INJECTION; BEAM PRODUCTION; DESIGN; STANFORD LINEAR COLLIDER; BEAM BUNCHING; BEAM DYNAMICS; BEAM EMITTANCE; CHARGE DENSITY; COMPUTERIZED SIMULATION; ELECTRON BEAMS; KINETIC ENERGY; MAGNETIC FIELDS; PERFORMANCE; PHASE SPACE; RF SYSTEMS; SPACE CHARGE; ACCELERATOR FACILITIES; ACCELERATORS; BEAMS; ENERGY; LEPTON BEAMS; LINEAR ACCELERATORS; MATHEMATICAL SPACE; PARTICLE BEAMS; SIMULATION; SPACE; 430302* - Particle Accelerators- Injection & Extraction Systems

Citation Formats

James, M B. Production of high intensity electron bunches for the SLAC Linear Collider. United States: N. p., 1987. Web. doi:10.2172/5911088.
James, M B. Production of high intensity electron bunches for the SLAC Linear Collider. United States. https://doi.org/10.2172/5911088
James, M B. 1987. "Production of high intensity electron bunches for the SLAC Linear Collider". United States. https://doi.org/10.2172/5911088. https://www.osti.gov/servlets/purl/5911088.
@article{osti_5911088,
title = {Production of high intensity electron bunches for the SLAC Linear Collider},
author = {James, M B},
abstractNote = {This thesis describes the design and performance of a high intensity electron injecfor for the SLAC Linear Collider. Motivation for the collider and the specifications for the injector are discussed. An analytic theory of the bunching and capture of electrons by rf fields is discussed in the limit of low space charge and small signal. The design and performance of SLAC's main injector are described to illustrate a successful application of this theory. The bunching and capture of electrons by rf fields are then discussed in the limit of high space charge and large signal, and a description of the design of the collider injector follows. In the limit of high space charge forces and large rf signals, the beam dynamics are considerably more complex and numerical simulations are required to predict particle motion. A computer code which models the longitudinal dynamics of electrons in the presence of space charge and rf fields is described. The results of the simulations, the resulting collider injector design and the various components which make up the collider injector are described. These include the gun, subharmonic bunchers, traveling-wave buncher and velocity-of-light accelerator section. Finally, the performance of the injector is described including the beam intensity, bunch length, transverse emittance and energy spectrum. While the final operating conditions differ somewaht from the design, the performance of the collider injector is in good agreement with the numerical simulations and meets all of the collider specifications. 28 refs.},
doi = {10.2172/5911088},
url = {https://www.osti.gov/biblio/5911088}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Aug 01 00:00:00 EDT 1987},
month = {Sat Aug 01 00:00:00 EDT 1987}
}