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abstract:
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Throughout the last half century, electron beam brightness has been the quantitative benchmark for measuring the advancement of light sources. The generation of these high brightness beams often require compaction techniques to decrease the longitudinal extent of the beam, consequently increasing the current. Presently, one of the popular methods for obtaining the amplification of current in electron beams is by magnetic compression.
Magnetic bunch compression is a fairly common tool utilized by the accelerator community, however it can still be considered a stand alone instrument since the details of the physics that affect this type of electron beam manipulation are not categorically well
understood. Of particular interest is the coupling between the longitudinal and transverse phase space planes and the forces responsible for the effects that contribute to the dilution of the transverse emittance in the bend plane of the beam.
This thesis details the design, construction, simulation, testing and implementation of a magnetic bunch compressor at the Accelerator Test Facility (ATF), a leading photoinjector users' facility located within the Brookhaven National Laboratory (BNL).
Simulations show that the magnetic chicane bunch compressor increases the peak current of the ATF electron beam by a significant factor while only sustaining a nominal increase in the
bend plane emittance. Additionally, some interesting effects from the inclusion of coherent synchrotron radiation in the simulations such as linearization of the lower energy portion of the beam and smearing of the longitudinal distribution are demonstrated.
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