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Title: Application of FEL technique for constructing high-intensity, monochromatic, polarized gamma-sources at storage rings

Abstract

A possibility to construct high-intensity tunable monochromatic{gamma}-source at high energy storage rings is discussed. It is proposed to produce {gamma}-quanta by means of Compton backscattering of laser photons on electrons circulating in the storage. The laser light wavelength is chosen in such a way that after the scattering, the electron does not leave the separatrix. So as the probability of the scattering is rather small, energy oscillations are damped prior the next scattering. As a result, the proposed source can operate in {open_quotes}parasitic{close_quote} mode not interfering with the main mode of the storage ring operation. Analysis of parameters of existent storage rings (PETRA, ESRF, Spring-8, etc) shows that the laser light wavelength should be in infrared, {lambda}{approximately} 10 - 400 {mu}m, wavelength band. Installation at storage rings of tunable free-electron lasers with the peak and average output power {approximately} 10 MW and {approximately} 1 kW, respectively, will result in the intensity of the {gamma}-source up to {approximately} 10{sup 14}s{sup -1} with tunable {gamma}-quanta energy from several MeV up to several hundreds MeV. Such a {gamma}-source will reveal unique possibilities for precision investigations in nuclear physics.

Authors:
; ;  [1]
  1. Automatic Systems Corporation, Samara (Russian Federation) [and others
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (United States)
OSTI Identifier:
238667
Report Number(s):
BNL-61982-Absts.; CONF-9508156-Absts.
Journal ID: ISSN 0168-9002; ON: DE96002729; TRN: 96:013156
Resource Type:
Conference
Resource Relation:
Journal Volume: 375; Journal Issue: 1-3; Conference: 17. international free electron laser conference, New York, NY (United States), 21-25 Aug 1995; Other Information: PBD: [1995]; Related Information: Is Part Of 17th international free electron laser conference and 2nd international FEL users` workshop. Program and abstracts; PB: 300 p.
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCE TECHNOLOGY; 43 PARTICLE ACCELERATORS; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; FREE ELECTRON LASERS; GAMMA SOURCES; DESIGN; STORAGE RINGS; POLARIZED BEAMS; INFRARED RADIATION

Citation Formats

Saldin, E.L., Schneidmiller, E.A., and Ulyanov, Yu.N. Application of FEL technique for constructing high-intensity, monochromatic, polarized gamma-sources at storage rings. United States: N. p., 1995. Web. doi:10.1016/0168-9002(96)00049-6.
Saldin, E.L., Schneidmiller, E.A., & Ulyanov, Yu.N. Application of FEL technique for constructing high-intensity, monochromatic, polarized gamma-sources at storage rings. United States. doi:10.1016/0168-9002(96)00049-6.
Saldin, E.L., Schneidmiller, E.A., and Ulyanov, Yu.N. Sun . "Application of FEL technique for constructing high-intensity, monochromatic, polarized gamma-sources at storage rings". United States. doi:10.1016/0168-9002(96)00049-6. https://www.osti.gov/servlets/purl/238667.
@article{osti_238667,
title = {Application of FEL technique for constructing high-intensity, monochromatic, polarized gamma-sources at storage rings},
author = {Saldin, E.L. and Schneidmiller, E.A. and Ulyanov, Yu.N.},
abstractNote = {A possibility to construct high-intensity tunable monochromatic{gamma}-source at high energy storage rings is discussed. It is proposed to produce {gamma}-quanta by means of Compton backscattering of laser photons on electrons circulating in the storage. The laser light wavelength is chosen in such a way that after the scattering, the electron does not leave the separatrix. So as the probability of the scattering is rather small, energy oscillations are damped prior the next scattering. As a result, the proposed source can operate in {open_quotes}parasitic{close_quote} mode not interfering with the main mode of the storage ring operation. Analysis of parameters of existent storage rings (PETRA, ESRF, Spring-8, etc) shows that the laser light wavelength should be in infrared, {lambda}{approximately} 10 - 400 {mu}m, wavelength band. Installation at storage rings of tunable free-electron lasers with the peak and average output power {approximately} 10 MW and {approximately} 1 kW, respectively, will result in the intensity of the {gamma}-source up to {approximately} 10{sup 14}s{sup -1} with tunable {gamma}-quanta energy from several MeV up to several hundreds MeV. Such a {gamma}-source will reveal unique possibilities for precision investigations in nuclear physics.},
doi = {10.1016/0168-9002(96)00049-6},
journal = {},
number = 1-3,
volume = 375,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

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  • Permanent magnet technology is rapidly improving and it seems possible now to design and build dedicated electron storage rings for peculiar applications such as microlithography and free electron laser. A low capital cost as well as a low operational cost (no power supplies) may lead to industrial solutions. In this paper the authors describe two possible design studies for machines at energies of 240 and 500 MeV with some indications on an efficient injector.
  • In collaboration with the Max-Planck-Institut (MPI) fuer Kernphysik in Heidelberg and the University of Marburg we presently design and construct a high intensity polarized atomic beam source. It is intended to deliver 1*10{sup 17} atoms/sec in one hyperfine state into a storage cell for FILTEX. FILTEX is an abbreviation for FILTer EXperiment aiming to polarize storage ring beams. The structure and the vacuum chambers of this source are completed and installed at the Heidelberg Test Storage Ring (TSR). Vacuum pumps, gauges etc. are mounted and partly connected to a logical operation system. When atomic beam nozzle and skimmer geometries andmore » distances as well as the nozzle temperature are optimized, the final geometrical arrangement or our new hybrid sixpole magnets will be decided and the whole source should be completed by the end of 1989.« less
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  • Beam diagnostics at high-intensity facilities feature their own special set of problems and characteristics. Issues peculiar to high-intensity storage rings include beam loss, beam halos, extraction efficiency, beam in the gap, clearing electrodes, and beam-profile measurement. The Los Alamos Proton Storage Ring (PSR) is a nice example of a high-intensity storage ring. The author discusses in some detail three diagnostic systems currently in use at the PSR: the beam-loss-monitor system, the electron-clearing system, and the beam-in-the-gap monitor. Much of the discussion is inspired by the problems that were encountered and the useful things learned while commissioning and developing the PSR.more » Another inspiration is the work on the next-generation neutron-spallation source, also known as the National Center for Neutron Research (NCNR).« less