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Development of a Vacuum Encapsulated, Hermetically Sealed Diamond Amplified Cathode Capsule

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dc.contributor.advisor Rao, Triveni, Deshpande, Abhay en_US
dc.contributor.author Gangone, Elizabeth Michelle en_US
dc.contributor.other Department of Physics (Scientific Instrumentation en_US
dc.date.accessioned 2013-05-22T17:34:32Z
dc.date.accessioned 2015-04-24T14:46:34Z
dc.date.available 2013-05-22T17:34:32Z
dc.date.available 2015-04-24T14:46:34Z
dc.date.issued 2012-08-01
dc.identifier Gangone_grad.sunysb_0771M_11009 en_US
dc.identifier.uri http://hdl.handle.net/1951/59655 en_US
dc.identifier.uri http://hdl.handle.net/11401/71228 en_US
dc.description 116 pg. en_US
dc.description.abstract This thesis will discuss the purpose, theory, and fabrication procedure of a hermetically-sealed, diamond amplified cathode capsule as well as results and progress to date. The objective of this thesis is to develop a procedure to fabricate a successful capsule, in which a successful capsule can contain at least nanotorr pressure during leak checking and hold off at least 5000 V during voltage hold off measurements. The main purpose of the capsule is to create a secondary electron emitter which acts as a high brightness, low emittance source in electron guns for accelerator systems and can be easily transported from the fabrication site to electron guns. The diamond amplified cathode capsule uses the diamond amplifier concept to overcome current problems associated with photocathodes and drive lasers for high average current accelerator systems. The capsule contains primary electrons emitted from a cathode in an insulating spacer under vacuum. The primary electrons are accelerated across the spacer by a high voltage bias into a diamond. Secondary electrons are produced and emitted from the diamond, which results in a gain of two orders of magnitude. Material selections for the capsule were carefully chosen and described. Sample preparation and fabrication procedures for both the low and high temperature were developed. Leak checking and voltage hold off measurements were used to refine the fabrication procedure. These integrity checks were also used to quantitatively define a successful capsule. Future research will be focused in improving the success rates for the integrity checks, refining the sample preparation and fabrication process, and performing an emission measurement to calculate gain. en_US
dc.description.sponsorship This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. en_US
dc.format Monograph en_US
dc.format.medium Electronic Resource en_US
dc.language.iso en_US en_US
dc.publisher The Graduate School, Stony Brook University: Stony Brook, NY. en_US
dc.subject.lcsh Physics en_US
dc.title Development of a Vacuum Encapsulated, Hermetically Sealed Diamond Amplified Cathode Capsule en_US
dc.type Thesis en_US
dc.mimetype Application/PDF en_US
dc.contributor.committeemember Weinacht, Thomas en_US
dc.contributor.committeemember Hobbs, John Graf, Erle en_US


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