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Title: Barrier RF Stacking

Abstract

A novel wideband RF system, nicknamed the barrier RF, has been designed, fabricated and installed in the Fermilab Main Injector. The cavity is made of seven Finemet cores, and the modulator made of two bipolar high-voltage fast solid-state switches. The system can deliver {+-}7 kV square pulses at 90 kHz. The main application is to stack two proton batches injected from the Booster and squeeze them into the size of one so that the bunch intensity can be doubled. High intensity beams have been successfully stacked and accelerated to 120 GeV with small losses. The problem of large longitudinal emittance growth is the focus of the present study. An upgraded system with two barrier RF cavities for continuous stacking is under construction. This work is part of the US-Japan collaborative agreement.

Authors:
;  [1];  [2];  [3]
  1. Fermilab (United States)
  2. Caltech (United States)
  3. KEK (Japan)
Publication Date:
OSTI Identifier:
20722782
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 773; Journal Issue: 1; Conference: 33. ICFA advanced beam dynamics workshop on high intensity and high brightness hadron beams, Bensheim (Germany), 18-22 Oct 2004; Other Information: DOI: 10.1063/1.1949548; (c) 2005 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:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 43 PARTICLE ACCELERATORS; ACCELERATORS; BRIGHTNESS; FERMILAB; GEV RANGE; KHZ RANGE; PARTICLE LOSSES; PROTON BEAMS; PROTONS; PULSES; RF SYSTEMS; SWITCHES

Citation Formats

Chou, W, Wildman, D, Zheng, H, and Takagi, A. Barrier RF Stacking. United States: N. p., 2005. Web. doi:10.1063/1.1949548.
Chou, W, Wildman, D, Zheng, H, & Takagi, A. Barrier RF Stacking. United States. https://doi.org/10.1063/1.1949548
Chou, W, Wildman, D, Zheng, H, and Takagi, A. 2005. "Barrier RF Stacking". United States. https://doi.org/10.1063/1.1949548.
@article{osti_20722782,
title = {Barrier RF Stacking},
author = {Chou, W and Wildman, D and Zheng, H and Takagi, A},
abstractNote = {A novel wideband RF system, nicknamed the barrier RF, has been designed, fabricated and installed in the Fermilab Main Injector. The cavity is made of seven Finemet cores, and the modulator made of two bipolar high-voltage fast solid-state switches. The system can deliver {+-}7 kV square pulses at 90 kHz. The main application is to stack two proton batches injected from the Booster and squeeze them into the size of one so that the bunch intensity can be doubled. High intensity beams have been successfully stacked and accelerated to 120 GeV with small losses. The problem of large longitudinal emittance growth is the focus of the present study. An upgraded system with two barrier RF cavities for continuous stacking is under construction. This work is part of the US-Japan collaborative agreement.},
doi = {10.1063/1.1949548},
url = {https://www.osti.gov/biblio/20722782}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 773,
place = {United States},
year = {Wed Jun 08 00:00:00 EDT 2005},
month = {Wed Jun 08 00:00:00 EDT 2005}
}