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Title: Reconstruction of FXR Beam Conditions

Abstract

Beam-envelope radius, envelope angle, and beam emittance can be derived from measurements of beam radius for at least three different transport conditions. We have used this technique to reconstruct exit parameters from the FXR injector and accelerator. We use a diamagnetic loop (DML) to measure the magnetic moment of the high current beam. With no assumptions about radial profile, we can derive the beam mean squire radius from the moment under certain easily met conditions. Since it is this parameter which is required for the reconstruction, it is evident that the DML is the ideal diagnostic for this technique. The simplest application of this technique requires at least three shots for a reconstruction but in reality requires averaging over many more shots because of shot to shot variation. Since DML measurements do not interfere with the beam, single shot time resolved measurements of the beam parameters appear feasible if one uses an array of at least three DMLs separated by known transport conditions.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15006171
Report Number(s):
UCRL-JC-141989
TRN: US0400444
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 2001 Particle Accelerator Conference, Chicago, IL (US), 06/18/2001--06/22/2001; Other Information: PBD: 31 May 2001
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; BEAM EMITTANCE; MAGNETIC MOMENTS; TRANSPORT

Citation Formats

Nexen, W E, Scarpetti, R D, and Zentler, J. Reconstruction of FXR Beam Conditions. United States: N. p., 2001. Web.
Nexen, W E, Scarpetti, R D, & Zentler, J. Reconstruction of FXR Beam Conditions. United States.
Nexen, W E, Scarpetti, R D, and Zentler, J. Thu . "Reconstruction of FXR Beam Conditions". United States. doi:. https://www.osti.gov/servlets/purl/15006171.
@article{osti_15006171,
title = {Reconstruction of FXR Beam Conditions},
author = {Nexen, W E and Scarpetti, R D and Zentler, J},
abstractNote = {Beam-envelope radius, envelope angle, and beam emittance can be derived from measurements of beam radius for at least three different transport conditions. We have used this technique to reconstruct exit parameters from the FXR injector and accelerator. We use a diamagnetic loop (DML) to measure the magnetic moment of the high current beam. With no assumptions about radial profile, we can derive the beam mean squire radius from the moment under certain easily met conditions. Since it is this parameter which is required for the reconstruction, it is evident that the DML is the ideal diagnostic for this technique. The simplest application of this technique requires at least three shots for a reconstruction but in reality requires averaging over many more shots because of shot to shot variation. Since DML measurements do not interfere with the beam, single shot time resolved measurements of the beam parameters appear feasible if one uses an array of at least three DMLs separated by known transport conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 31 00:00:00 EDT 2001},
month = {Thu May 31 00:00:00 EDT 2001}
}

Conference:
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