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Title: An improved resistive wall monitor

Abstract

Resistive wall monitors were designed and built for the Fermilab Main Injector project. These devices measure longitudinal beam current from 3 KHz to 4 GHz with a 1 ohm gap impedance. The new design provides a larger aperture and a calibration port to improve the accuracy of single-bunch intensity measurements. Microwave absorber material is used to reduce interference from spurious electromagnetic waves traveling inside the beam pipe. Several types of ferrite materials were evaluated for the absorber. Inexpensive ferrite rods were selected and assembled in an array forming the desired geometry without machining.

Authors:
;  [1]
  1. Fermi National Accelerator Laboratory P.O. Box 500, Batavia, Illinois 60510 (United States)
Publication Date:
OSTI Identifier:
21202400
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 451; Journal Issue: 1; Conference: 8. beam instrumentation workshop, Stanford, CA (United States), 4-7 May 1998; Other Information: DOI: 10.1063/1.57030; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; APERTURES; BEAM CURRENTS; BEAM INJECTION; BEAM MONITORING; BEAM MONITORS; BEAM PROFILES; CALIBRATION; DESIGN; ELECTRIC CURRENTS; FERMILAB; FERRITE; GHZ RANGE; IMPEDANCE; KHZ RANGE; MICROWAVE RADIATION; PROTON BEAMS

Citation Formats

Fellenz, Brian, and Crisp, Jim. An improved resistive wall monitor. United States: N. p., 1998. Web. doi:10.1063/1.57030.
Fellenz, Brian, & Crisp, Jim. An improved resistive wall monitor. United States. https://doi.org/10.1063/1.57030
Fellenz, Brian, and Crisp, Jim. 1998. "An improved resistive wall monitor". United States. https://doi.org/10.1063/1.57030.
@article{osti_21202400,
title = {An improved resistive wall monitor},
author = {Fellenz, Brian and Crisp, Jim},
abstractNote = {Resistive wall monitors were designed and built for the Fermilab Main Injector project. These devices measure longitudinal beam current from 3 KHz to 4 GHz with a 1 ohm gap impedance. The new design provides a larger aperture and a calibration port to improve the accuracy of single-bunch intensity measurements. Microwave absorber material is used to reduce interference from spurious electromagnetic waves traveling inside the beam pipe. Several types of ferrite materials were evaluated for the absorber. Inexpensive ferrite rods were selected and assembled in an array forming the desired geometry without machining.},
doi = {10.1063/1.57030},
url = {https://www.osti.gov/biblio/21202400}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 451,
place = {United States},
year = {Thu Dec 10 00:00:00 EST 1998},
month = {Thu Dec 10 00:00:00 EST 1998}
}