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Title: Experiment on suppression of spontaneous undulator radiation at ATF

Abstract

We propose undertaking a demonstration experiment on suppressing spontaneous undulator radiation from an electron beam at BNL's Accelerator Test Facility (ATF). We describe the method, the proposed layout, and a possible schedule. There are several advantages in strongly suppressing shot noise in the electron beam, and the corresponding spontaneous radiation. The self-amplified spontaneous (SASE) emission originating from shot noise in the electron beam is the main source of noise in high-gain FEL amplifiers. It may negatively affect several HG FEL applications ranging from single- to multi-stage HGHG FELs. SASE saturation also imposes a fundamental hard limit on the gain of an FEL amplifier in a coherent electron-cooling scheme. A novel active method for suppressing shot noise in relativistic electron beams by many orders-of-magnitude was recently proposed. While theoretically such strong suppression appears feasible, the performance and applicability of this novel method must be evaluated experimentally. Several practical questions about the proposed noise suppressor, such as 3D effects and/or sensitivity to the e-beam parameters also require experimental clarification. To do this, we propose here a proof-of-principle experiment using elements of the VISA FEL at BNL's Accelerator Test Facility.

Authors:
;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Accelerator Test Facility
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
970530
Report Number(s):
BNL-90328-2009-CP
R&D Project: KBCH139; KB0202011; TRN: US1000806
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: Free Electron Laser Conference (FEL 2009); Liverpool, UK; 20090823 through 20090828
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; AMPLIFIERS; ELECTRON BEAMS; ELECTRON COOLING; FREE ELECTRON LASERS; PERFORMANCE; RADIATIONS; SATURATION; SENSITIVITY; WIGGLER MAGNETS; Nuclear security; culture; self-reliability; terrorism; MPC&A; accelerator test facility

Citation Formats

Litvinenko, V, and Yakimenko, V. Experiment on suppression of spontaneous undulator radiation at ATF. United States: N. p., 2009. Web.
Litvinenko, V, & Yakimenko, V. Experiment on suppression of spontaneous undulator radiation at ATF. United States.
Litvinenko, V, and Yakimenko, V. 2009. "Experiment on suppression of spontaneous undulator radiation at ATF". United States. https://www.osti.gov/servlets/purl/970530.
@article{osti_970530,
title = {Experiment on suppression of spontaneous undulator radiation at ATF},
author = {Litvinenko, V and Yakimenko, V},
abstractNote = {We propose undertaking a demonstration experiment on suppressing spontaneous undulator radiation from an electron beam at BNL's Accelerator Test Facility (ATF). We describe the method, the proposed layout, and a possible schedule. There are several advantages in strongly suppressing shot noise in the electron beam, and the corresponding spontaneous radiation. The self-amplified spontaneous (SASE) emission originating from shot noise in the electron beam is the main source of noise in high-gain FEL amplifiers. It may negatively affect several HG FEL applications ranging from single- to multi-stage HGHG FELs. SASE saturation also imposes a fundamental hard limit on the gain of an FEL amplifier in a coherent electron-cooling scheme. A novel active method for suppressing shot noise in relativistic electron beams by many orders-of-magnitude was recently proposed. While theoretically such strong suppression appears feasible, the performance and applicability of this novel method must be evaluated experimentally. Several practical questions about the proposed noise suppressor, such as 3D effects and/or sensitivity to the e-beam parameters also require experimental clarification. To do this, we propose here a proof-of-principle experiment using elements of the VISA FEL at BNL's Accelerator Test Facility.},
doi = {},
url = {https://www.osti.gov/biblio/970530}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {8}
}

Conference:
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