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Title: Analysis of Beam-Induced Damage to the SLC Positron Production Target

Abstract

The nominal Next Linear Collider (NLC) positron production design is based on extrapolation of the existing SLAC Linear Collider (SLC) positron production system. Given that the SLC positron production target failed during a run, it is necessary to analyze the beam-induced damage to the target in order to validate the extrapolations on which the NLC target is based. The failed SLC target and its associated housing were sent to existing ''hot-cell'' facilities at LANL for analysis. The target material, a tungsten-rhenium ''puck'', was removed from the housing and photographed and x-rayed. Leak-checking on the cooling system was performed. Sections were then removed from the target to determine the extent of internal damage to the material. High resolution photographs were taken and extensive hardness tests were performed on the irradiated and non-irradiated areas of the target material. The results of these analyses and conclusions applicable to the NLC target design are presented in this paper.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
800057
Report Number(s):
SLAC-PUB-9438
TRN: US200308%%515
DOE Contract Number:
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 20 Aug 2002
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; COOLING SYSTEMS; DESIGN; EXTRAPOLATION; HARDNESS; IMAGES; LANL; LINEAR COLLIDERS; POSITRONS; PRODUCTION; RESOLUTION; STANFORD LINEAR ACCELERATOR CENTER; TARGETS

Citation Formats

Bharadwaj, Vinod. Analysis of Beam-Induced Damage to the SLC Positron Production Target. United States: N. p., 2002. Web. doi:10.2172/800057.
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Bharadwaj, Vinod. Analysis of Beam-Induced Damage to the SLC Positron Production Target. United States. doi:10.2172/800057.
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Bharadwaj, Vinod. Tue . "Analysis of Beam-Induced Damage to the SLC Positron Production Target". United States. doi:10.2172/800057. https://www.osti.gov/servlets/purl/800057.
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@article{osti_800057,
title = {Analysis of Beam-Induced Damage to the SLC Positron Production Target},
author = {Bharadwaj, Vinod},
abstractNote = {The nominal Next Linear Collider (NLC) positron production design is based on extrapolation of the existing SLAC Linear Collider (SLC) positron production system. Given that the SLC positron production target failed during a run, it is necessary to analyze the beam-induced damage to the target in order to validate the extrapolations on which the NLC target is based. The failed SLC target and its associated housing were sent to existing ''hot-cell'' facilities at LANL for analysis. The target material, a tungsten-rhenium ''puck'', was removed from the housing and photographed and x-rayed. Leak-checking on the cooling system was performed. Sections were then removed from the target to determine the extent of internal damage to the material. High resolution photographs were taken and extensive hardness tests were performed on the irradiated and non-irradiated areas of the target material. The results of these analyses and conclusions applicable to the NLC target design are presented in this paper.},
doi = {10.2172/800057},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 20 00:00:00 EDT 2002},
month = {Tue Aug 20 00:00:00 EDT 2002}
}
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Technical Report:
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DOI:  10.2172/800057
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