Design and test of a beam transformer as a chopper

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This paper introduces a new type of chopper, which is similar to a beam transformer first discussed by R. Wideroe[1]. It is based on the fact that the RFQ has a rather small energy window. A pulsed beam transformer that provides 10% energy modulation to the beam in front of an RFQ can effectively chop the beam. It has fast rise- and fall-time and a short physical length. A prototype, which consists of a cavity and a high voltage pulsed power supply, has been constructed and tested. Two types of magnetic materials were tried for making the core of the ... continued below

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109 Kilobytes pages

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W. Chou, Y. Mori, M. Muto, Y. Shirakabe and A. Takagi September 2, 1999.

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Description

This paper introduces a new type of chopper, which is similar to a beam transformer first discussed by R. Wideroe[1]. It is based on the fact that the RFQ has a rather small energy window. A pulsed beam transformer that provides 10% energy modulation to the beam in front of an RFQ can effectively chop the beam. It has fast rise- and fall-time and a short physical length. A prototype, which consists of a cavity and a high voltage pulsed power supply, has been constructed and tested. Two types of magnetic materials were tried for making the core of the cavity--the Finemet and the ferrite Philips 4M2. While the former gave good performance, the latter failed the test. Results from the bench measurements and a plan for beam tests are briefly described. For details the readers are referred to Ref. [2].

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109 Kilobytes pages

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  • Particle Accelerator Conference, PAC 99, New York, NY (US), 03/29/1999--04/02/1999

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  • Report No.: FERMILAB-Conf-99/102
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 10463
  • Archival Resource Key: ark:/67531/metadc626348

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 2, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 1, 2016, 6:20 p.m.

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W. Chou, Y. Mori, M. Muto, Y. Shirakabe and A. Takagi. Design and test of a beam transformer as a chopper, article, September 2, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc626348/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.