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UBC Theses and Dissertations
Development of an injection system for a compact H- cyclotron, the concomitant measurement of injected beam properties and the experimental characterization of the spiral inflector Dehnel, Morgan Patrick
Abstract
This thesis addresses two major problems. One is of interest to commercial cyclotron manufacturers and the other is of interest to the accelerator physics community. The industrial problem was to produce a compact and modular ion source and injection system for the new TR13 H~ cyclotron, which is capable of transporting and injecting a high quality and well matched beam into the cyclotron. The accelerator physics problem was to advance the science of inflector ion optical design, analysis and troubleshooting from the realm of pure simulation to the realm of measurement and experimentation. The industrial problem was solved by designing candidate injection systems in parallel with the TR13 cyclotron design. These systems were fabricated and then experimentally optimized along with the ion source on a 1 MeV test cyclotron. This work resulted in a set of ion source and injection systems with well documented and understood properties. The recommended solution for the TR13 was a cost effective injection system composed of only two axially rotated quadrupole magnets. The accelerator physics problem is the lack of measured cyclotron inflector optical data and beam related properties in the immediate vicinity of a cyclotron inflector. This required the development of an experimental technique to overcome the numerous technical difficulties associated with making measurements near a device as inaccessible as a cyclotron inflector. A diverse assembly of equipment and procedures was required: a well understood injection system, a pinhole collimator for producing beamlets for ray-tracing, a specially configured center region to expose the inflector to view, a system of scintillators in close proximity to the inflector for producing visible beamspots, a TV camera and frame grabber to record images and a set of image analysis and data processing procedures. The results obtained using this technique were: (a) measured constraints on the coefficients of an inflector's transport matrix, (b) measurement of the beam's centering, size, shape and orientation in phase space at the entrance and exit of an inflector, (c) measurements of beam displacement as a function of field and energy perturbations at an inflector exit and (d) comparison of an inflector simulation code's capabilities against detailed measured data. Such properties of a beam have not heretofore been determined experimentally.
Item Metadata
Title |
Development of an injection system for a compact H- cyclotron, the concomitant measurement of injected beam properties and the experimental characterization of the spiral inflector
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1995
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Description |
This thesis addresses two major problems. One is of interest to commercial cyclotron
manufacturers and the other is of interest to the accelerator physics community.
The industrial problem was to produce a compact and modular ion source and injection system for
the new TR13 H~ cyclotron, which is capable of transporting and injecting a high quality and well
matched beam into the cyclotron.
The accelerator physics problem was to advance the science of inflector ion optical design, analysis
and troubleshooting from the realm of pure simulation to the realm of measurement and experimentation.
The industrial problem was solved by designing candidate injection systems in parallel with the
TR13 cyclotron design. These systems were fabricated and then experimentally optimized along with the
ion source on a 1 MeV test cyclotron. This work resulted in a set of ion source and injection systems with
well documented and understood properties. The recommended solution for the TR13 was a cost effective
injection system composed of only two axially rotated quadrupole magnets.
The accelerator physics problem is the lack of measured cyclotron inflector optical data and beam
related properties in the immediate vicinity of a cyclotron inflector. This required the development of an
experimental technique to overcome the numerous technical difficulties associated with making
measurements near a device as inaccessible as a cyclotron inflector. A diverse assembly of equipment and
procedures was required: a well understood injection system, a pinhole collimator for producing beamlets
for ray-tracing, a specially configured center region to expose the inflector to view, a system of
scintillators in close proximity to the inflector for producing visible beamspots, a TV camera and frame
grabber to record images and a set of image analysis and data processing procedures. The results obtained
using this technique were: (a) measured constraints on the coefficients of an inflector's transport matrix,
(b) measurement of the beam's centering, size, shape and orientation in phase space at the entrance and
exit of an inflector, (c) measurements of beam displacement as a function of field and energy perturbations
at an inflector exit and (d) comparison of an inflector simulation code's capabilities against detailed
measured data. Such properties of a beam have not heretofore been determined experimentally.
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Extent |
12361846 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-05-29
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0085674
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1995-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.