Electron beam dynamics for the ISIS bremsstrahlung beam generation system

An electron beam transport system was designed for use in the Bremsstrahlung Beam Generation System of the Integrated Stand-off Inspection System (ISIS). The purpose of this electron transport system was to provide for electron beam diagnostics and energy selection while also positioning the electron beam on a target down range. The transport system and its component magnets were designed using the TRANSPORT, Poisson, and Opera 3D codes, as well as several custom Python scripts. By implementing several methods in each part of the design process, it was possible to design the electron transport system to the exact specifications of the ISIS electron beam. This careful and iterative design process was documented in such a way to facilitate future beam transport design both at the MIT Plasma Science and Fusion center and elsewhere. This design process resulted in a beam transport system composed of three irondominated resistive-coil electromagnets. The system was designed for beam momentum up to 60 MeV/c and emittance of order 20 mm-mrad. Through magnetic field simulation and beam transport in 3D, a ID matrix code which tracks individual particles was developed. This code agreed with more detailed beam calculations and should allow for rapid beam simulation during system testing and operation.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Nuclear Science and Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2011

Author dc:creator

• Block, Robert E. (Robert Edward)

Advisor dc:contributor.advisor

• Timothy A Antaya.

• Nuclear Science and Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/76521

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/76521