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Title: Influence of plasma loading in a hybrid muon cooling channel

Abstract

In a hybrid 6D cooling channel, cooling is accomplished by reducing the beam momentum through ionization energy loss in wedge absorbers and replenishing the momentum loss in the longitudinal direction with gas-filled rf cavities. While the gas acts as a buffer to prevent rf breakdown, gas ionization also occurs as the beam passes through the pressurized cavity. The resulting plasma may gain substantial energy from the rf electric field which it can transfer via collisions to the gas, an effect known as plasma loading. In this paper, we investigate the influence of plasma loading on the cooling performance of a rectilinear hybrid channel. With the aid of numerical simulations we examine the sensitivity in cooling performance and plasma loading to key parameters such as the rf gradient and gas pressure.

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1193221
Report Number(s):
BNL-107253-2015-CP
R&D Project: KBCH139; KB0202011
DOE Contract Number:  
DE-SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 6th International Particle Accelerator Conference (IPAC’15); Richmond, VA; 20150503 through 20150508
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Freemire, B., Stratakis, D., and Yonehara, K. Influence of plasma loading in a hybrid muon cooling channel. United States: N. p., 2015. Web.
Freemire, B., Stratakis, D., & Yonehara, K. Influence of plasma loading in a hybrid muon cooling channel. United States.
Freemire, B., Stratakis, D., and Yonehara, K. Sun . "Influence of plasma loading in a hybrid muon cooling channel". United States. https://www.osti.gov/servlets/purl/1193221.
@article{osti_1193221,
title = {Influence of plasma loading in a hybrid muon cooling channel},
author = {Freemire, B. and Stratakis, D. and Yonehara, K.},
abstractNote = {In a hybrid 6D cooling channel, cooling is accomplished by reducing the beam momentum through ionization energy loss in wedge absorbers and replenishing the momentum loss in the longitudinal direction with gas-filled rf cavities. While the gas acts as a buffer to prevent rf breakdown, gas ionization also occurs as the beam passes through the pressurized cavity. The resulting plasma may gain substantial energy from the rf electric field which it can transfer via collisions to the gas, an effect known as plasma loading. In this paper, we investigate the influence of plasma loading on the cooling performance of a rectilinear hybrid channel. With the aid of numerical simulations we examine the sensitivity in cooling performance and plasma loading to key parameters such as the rf gradient and gas pressure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {5}
}

Conference:
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