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Title: Design and test of a beam transformer as a chopper

Abstract

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].

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab., Batavia, IL (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
10463
Report Number(s):
FERMILAB-Conf-99/102
TRN: US0103561
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Conference
Resource Relation:
Conference: Particle Accelerator Conference, PAC 99, New York, NY (US), 03/29/1999--04/02/1999; Other Information: PBD: 2 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; DESIGN; MAGNETIC MATERIALS; PERFORMANCE TESTING; BEAM PULSERS; BEAM SHAPING; RF SYSTEMS; QUADRUPOLES; MATERIALS TESTING

Citation Formats

W. Chou, Y. Mori, M. Muto, Y. Shirakabe and A. Takagi. Design and test of a beam transformer as a chopper. United States: N. p., 1999. Web.
W. Chou, Y. Mori, M. Muto, Y. Shirakabe and A. Takagi. Design and test of a beam transformer as a chopper. United States.
W. Chou, Y. Mori, M. Muto, Y. Shirakabe and A. Takagi. Thu . "Design and test of a beam transformer as a chopper". United States. https://www.osti.gov/servlets/purl/10463.
@article{osti_10463,
title = {Design and test of a beam transformer as a chopper},
author = {W. Chou, Y. Mori, M. Muto, Y. Shirakabe and A. Takagi},
abstractNote = {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].},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}

Conference:
Other availability
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