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Title: Precision machining and polishing of scintillating crystals for large calorimeters and hodoscopes. Revision 1

Abstract

New machining and polishing techniques have been developed for large scintillating crystal arrays such as the Barium Fluoride Electromagnetic Calorimeter for the GEM Detector at SSCL, the Crystal Clear Collaboration`s cerium fluoride or lead tungstenate calorimeter at the proposed LHC and CERN, the PHENIX Detector at RHIC (barium fluoride), and the cesium iodide Calorimeter for the BaBar Detector at PEP-2 B Factory at SLAC. The machining and polishing methods to be presented in this paper provide crystalline surfaces without sub-surface damage or deformation as verified by Rutherford Back-scattering (RBS) analysis. Surface roughness of about 10--20 angstroms and sub-micron mechanical tolerances have been demonstrated on large barium fluoride crystal samples. Mass production techniques have also been developed for machining the proper angled surfaces and polishing up to five 50 cm long crystals at one time. These techniques utilize kinematic mount technology developed at LLNL to allow precision machining and polishing of complex surfaces. They will present this technology along with detailed surface studies of barium fluoride and cerium fluoride crystals polished with this technique.

Authors:
; ;  [1];  [2]
  1. Lawrence Livermore National Lab., CA (United States)
  2. Oak Ridge National Lab., TN (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10151692
Report Number(s):
UCRL-JC-114014-Rev.1; CONF-940411-19-Rev.1
ON: DE94012060; TRN: 94:012878
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Spring meeting of the Materials Research Society (MRS),San Francisco, CA (United States),4-8 Apr 1994; Other Information: PBD: Apr 1994
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 43 PARTICLE ACCELERATORS; BARIUM FLUORIDES; MACHINING; POLISHING; SHOWER COUNTERS; MATERIALS; HODOSCOPES; CERIUM FLUORIDES; CRYSTALS; SOLID SCINTILLATION DETECTORS; REFLECTIVE COATINGS; INORGANIC PHOSPHORS; ROUGHNESS; SUPERCONDUCTING SUPER COLLIDER; BROOKHAVEN RHIC; MESON FACTORIES; 360601; 440104; 430303; PREPARATION AND MANUFACTURE; HIGH ENERGY PHYSICS INSTRUMENTATION; EXPERIMENTAL FACILITIES AND EQUIPMENT

Citation Formats

Wuest, C R, Fuchs, B A, Holdener, F R, and Heck, Jr, J L. Precision machining and polishing of scintillating crystals for large calorimeters and hodoscopes. Revision 1. United States: N. p., 1994. Web.
Wuest, C R, Fuchs, B A, Holdener, F R, & Heck, Jr, J L. Precision machining and polishing of scintillating crystals for large calorimeters and hodoscopes. Revision 1. United States.
Wuest, C R, Fuchs, B A, Holdener, F R, and Heck, Jr, J L. 1994. "Precision machining and polishing of scintillating crystals for large calorimeters and hodoscopes. Revision 1". United States. https://www.osti.gov/servlets/purl/10151692.
@article{osti_10151692,
title = {Precision machining and polishing of scintillating crystals for large calorimeters and hodoscopes. Revision 1},
author = {Wuest, C R and Fuchs, B A and Holdener, F R and Heck, Jr, J L},
abstractNote = {New machining and polishing techniques have been developed for large scintillating crystal arrays such as the Barium Fluoride Electromagnetic Calorimeter for the GEM Detector at SSCL, the Crystal Clear Collaboration`s cerium fluoride or lead tungstenate calorimeter at the proposed LHC and CERN, the PHENIX Detector at RHIC (barium fluoride), and the cesium iodide Calorimeter for the BaBar Detector at PEP-2 B Factory at SLAC. The machining and polishing methods to be presented in this paper provide crystalline surfaces without sub-surface damage or deformation as verified by Rutherford Back-scattering (RBS) analysis. Surface roughness of about 10--20 angstroms and sub-micron mechanical tolerances have been demonstrated on large barium fluoride crystal samples. Mass production techniques have also been developed for machining the proper angled surfaces and polishing up to five 50 cm long crystals at one time. These techniques utilize kinematic mount technology developed at LLNL to allow precision machining and polishing of complex surfaces. They will present this technology along with detailed surface studies of barium fluoride and cerium fluoride crystals polished with this technique.},
doi = {},
url = {https://www.osti.gov/biblio/10151692}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Apr 01 00:00:00 EST 1994},
month = {Fri Apr 01 00:00:00 EST 1994}
}

Conference:
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