skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Demonstration of a real-time interferometer as a bunch-lenght monitor in a high-current electron beam accelerator

Abstract

A real-time interferometer (RTI) has been developed to monitor the bunch length of an electron beam in an accelerator. The RTI employs spatial autocorrelation, reflective optics, and a fast response pyro-detector array to obtain a real-time autocorrelation trace of the coherent radiation from an electron beam thus providing the possibility of online bunch-length diagnostics. A complete RTI system has been commissioned at the A0 photoinjector facility to measure sub-mm bunches at 13 MeV. Bunch length variation (FWHM) between 0.8 ps (-0.24 mm) and 1.5 ps (-0.45 mm) has been measured and compared with a Martin-Puplett interferometer and a streak camera. The comparisons show that RTI is a viable, complementary bunch length diagnostic for sub-mm electron bunches.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1038937
Report Number(s):
FERMILAB-PUB-12-070-APC
Journal ID: ISSN 0034-6748; RSINAK; TRN: US1202052
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Rev.Sci.Instrum.83:043302,2012
Additional Journal Information:
Journal Volume: 83; Journal Issue: 4; Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS, 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATORS; BEAM BUNCHING; COHERENT RADIATION; DIAGNOSTIC TECHNIQUES; ELECTRON BEAMS; ELECTRONS; INTERFEROMETERS; BEAM MONITORING; OPTICS; STREAK CAMERAS; Accelerators, Instrumentation

Citation Formats

Thangaraj, J, Thurman-Keup, R, Ruan, J, Johnson, A S, Lumpkin, A, Santucci, J, Maxwell, T, /Fermilab, Andonian, G, /UCLA /RadiaBeam Tech., Murokh, A, Ruelas, M, Ovodenko, A, and /RadiaBeam Tech. Demonstration of a real-time interferometer as a bunch-lenght monitor in a high-current electron beam accelerator. United States: N. p., 2012. Web. doi:10.1063/1.3698388.
Thangaraj, J, Thurman-Keup, R, Ruan, J, Johnson, A S, Lumpkin, A, Santucci, J, Maxwell, T, /Fermilab, Andonian, G, /UCLA /RadiaBeam Tech., Murokh, A, Ruelas, M, Ovodenko, A, & /RadiaBeam Tech. Demonstration of a real-time interferometer as a bunch-lenght monitor in a high-current electron beam accelerator. United States. https://doi.org/10.1063/1.3698388
Thangaraj, J, Thurman-Keup, R, Ruan, J, Johnson, A S, Lumpkin, A, Santucci, J, Maxwell, T, /Fermilab, Andonian, G, /UCLA /RadiaBeam Tech., Murokh, A, Ruelas, M, Ovodenko, A, and /RadiaBeam Tech. 2012. "Demonstration of a real-time interferometer as a bunch-lenght monitor in a high-current electron beam accelerator". United States. https://doi.org/10.1063/1.3698388. https://www.osti.gov/servlets/purl/1038937.
@article{osti_1038937,
title = {Demonstration of a real-time interferometer as a bunch-lenght monitor in a high-current electron beam accelerator},
author = {Thangaraj, J and Thurman-Keup, R and Ruan, J and Johnson, A S and Lumpkin, A and Santucci, J and Maxwell, T and /Fermilab and Andonian, G and /UCLA /RadiaBeam Tech. and Murokh, A and Ruelas, M and Ovodenko, A and /RadiaBeam Tech.},
abstractNote = {A real-time interferometer (RTI) has been developed to monitor the bunch length of an electron beam in an accelerator. The RTI employs spatial autocorrelation, reflective optics, and a fast response pyro-detector array to obtain a real-time autocorrelation trace of the coherent radiation from an electron beam thus providing the possibility of online bunch-length diagnostics. A complete RTI system has been commissioned at the A0 photoinjector facility to measure sub-mm bunches at 13 MeV. Bunch length variation (FWHM) between 0.8 ps (-0.24 mm) and 1.5 ps (-0.45 mm) has been measured and compared with a Martin-Puplett interferometer and a streak camera. The comparisons show that RTI is a viable, complementary bunch length diagnostic for sub-mm electron bunches.},
doi = {10.1063/1.3698388},
url = {https://www.osti.gov/biblio/1038937}, journal = {Rev.Sci.Instrum.83:043302,2012},
issn = {0034-6748},
number = 4,
volume = 83,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2012},
month = {Thu Mar 01 00:00:00 EST 2012}
}