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Title: Making Neutrons (and Protons): An Overview of the LANSCE Accelerator, Proton Storage Ring and Beam Transport Systems.

Abstract

The LANSCE accelerator provides uniquely flexible time-structured beams from 100 to 800 MeV that serve >20 active experimental stations.

Authors:
 [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1343697
Report Number(s):
LA-UR-17-21093
DOE Contract Number:
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Accelerator

Citation Formats

Jones, Kevin W. Making Neutrons (and Protons): An Overview of the LANSCE Accelerator, Proton Storage Ring and Beam Transport Systems.. United States: N. p., 2017. Web. doi:10.2172/1343697.
Jones, Kevin W. Making Neutrons (and Protons): An Overview of the LANSCE Accelerator, Proton Storage Ring and Beam Transport Systems.. United States. doi:10.2172/1343697.
Jones, Kevin W. Mon . "Making Neutrons (and Protons): An Overview of the LANSCE Accelerator, Proton Storage Ring and Beam Transport Systems.". United States. doi:10.2172/1343697. https://www.osti.gov/servlets/purl/1343697.
@article{osti_1343697,
title = {Making Neutrons (and Protons): An Overview of the LANSCE Accelerator, Proton Storage Ring and Beam Transport Systems.},
author = {Jones, Kevin W.},
abstractNote = {The LANSCE accelerator provides uniquely flexible time-structured beams from 100 to 800 MeV that serve >20 active experimental stations.},
doi = {10.2172/1343697},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Feb 13 00:00:00 EST 2017},
month = {Mon Feb 13 00:00:00 EST 2017}
}

Technical Report:

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  • The ability to model and simulate beam behavior in the Proton Storage Ring (PSR) of the Los Alamos Neutron Science Center (LANSCE) is an important diagnostic and predictive tool. This paper gives the results of an effort to model the ring apertures and lattice and use beam simulation programs to track the beam. The results are then compared to measured activation levels from beam loss in the ring. The success of the method determines its usefulness in evaluating the effects of planned upgrades to the Proton Storage Ring.
  • An upgrade program for increasing the stored beam current in the Proton Storage is presently under way. A part of the upgrade is the design and installation of a four-magnet beam-bumping system used for phase-space painting and minimizing interaction of the stored beam with the injection stripper foil. This paper describes the bump- magnet system including the relevant beam requirements, magnet specifications, power-cable specifications, pulsed-modulator requirements, and beam-tube eddy-current effects. The magnets are ferrite window-frame magnets with saddle windings. The series-pass pulsed modulators are programmable both in rise and fall time as well as amplitude. The peak current can bemore » varied between 50 and 300 A. The pulsed-current rise-time is fixed at 1 ms, and the linear fall- time during which beam is injected into the ring can be varied between 0.5 and 1.5 ms.« less
  • This report describes the design studies on colliding-beam storage rings carried out at the National Accelerator Laboratory in the summer and fall of 1968. These studies were under the direction of Lee C. Teng. M. Stanley Livingston also played an important part in catalyzing the studies. Dr. Teng's preface, immediately following, gives a chronology of the study and lists the participants in various aspects. The purpose of the study has been to develop realistic cost estimates upon which future plans can be based. It is to be emphasized that this is not a proposal for construction. The major results ofmore » the study are that 100-100 BeV colliding beam rings can be built for approximately 75 million dollars (in 1968 dollars), utilizing conventional steel and copper magnets. This estimate includes no equipment for physics experiments. A system utilizing steel magnets that are excited by superconducting coils is estimated to cost somewhat less. A similar system using cryogenic aluminum coils appears to be slightly more costly at this time than the conventional magnet. A number of storage rings built of superconducting magnets have also been analyzed on the premise (undemonstrated as yet) that they would in fact operate satisfactorily. Such magnets designed using present technology for relatively low fields, about 40 kG, appear to be competitive with conventional magnets. Evidently a total colliding-beam facility, including experimental equipment, could be built at NAL for a sum of the order of 100 million 1968 dollars. It should be added that the terms of reference of these design studies gave emphasis to a straightforward, conservative design. Further design work and advances in technology might very well result in a significant reduction in cost or, at the same cost, provide for a greater scope.« less