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Title: A Laser Metrology/Viewing System for ITER In-Vessel Inspection

Abstract

This paper identifies the requirements for a remotely operated precision laser ranging system for the International Thermonuclear Experimental Reactor. The inspection system is used for metrology and viewing, and must be capable of achieving submillimeter accuracy and operation in a reactor vessel that has high gamma radiation, high vacuum, elevated temperature, and magnetic field levels. A coherent, frequency modulated laser radar system is under development to meet these requirements. The metrology/viewing sensor consists of a compact laser-optic module linked through fiberoptics to the laser source and imaging units, located outside the harsh environment. The deployment mechanism is a remotely operated telescopic mast. Gamma irradiation up to 10{sup 7} Gy was conducted on critical sensor components with no significant impact to data transmission, and analysis indicates that critical sensor components can operate in a magnetic field with certain design modifications. Plans for testing key components in a magnetic field are underway.

Authors:
; ; ;  [1];  [2];  [3]
  1. Oak Ridge National Lab., TN (United States)
  2. Boeing Rocketdyne Div., Canoga Park, CA (United States)
  3. Coleman Research Corp., Springfield, VA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (United States)
OSTI Identifier:
629335
Report Number(s):
ORNL/CP-94832; CONF-971065-
ON: DE97008902; BR: AT150402C; TRN: 98:009839
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Conference
Resource Relation:
Conference: 17. IEEE/NPSS symposium on fusion engineering, San Diego, CA (United States), 6-10 Oct 1997; Other Information: PBD: [Oct 1997]
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; FIBER OPTICS; LASERS; REMOTE CONTROL; ITER TOKAMAK; IN-SERVICE INSPECTION; REACTOR VESSELS

Citation Formats

Spampinato, P T, Barry, R E, Chesser, J B, Menon, M M, Dagher, M A, and Slotwinski, A. A Laser Metrology/Viewing System for ITER In-Vessel Inspection. United States: N. p., 1997. Web.
Spampinato, P T, Barry, R E, Chesser, J B, Menon, M M, Dagher, M A, & Slotwinski, A. A Laser Metrology/Viewing System for ITER In-Vessel Inspection. United States.
Spampinato, P T, Barry, R E, Chesser, J B, Menon, M M, Dagher, M A, and Slotwinski, A. 1997. "A Laser Metrology/Viewing System for ITER In-Vessel Inspection". United States. https://www.osti.gov/servlets/purl/629335.
@article{osti_629335,
title = {A Laser Metrology/Viewing System for ITER In-Vessel Inspection},
author = {Spampinato, P T and Barry, R E and Chesser, J B and Menon, M M and Dagher, M A and Slotwinski, A},
abstractNote = {This paper identifies the requirements for a remotely operated precision laser ranging system for the International Thermonuclear Experimental Reactor. The inspection system is used for metrology and viewing, and must be capable of achieving submillimeter accuracy and operation in a reactor vessel that has high gamma radiation, high vacuum, elevated temperature, and magnetic field levels. A coherent, frequency modulated laser radar system is under development to meet these requirements. The metrology/viewing sensor consists of a compact laser-optic module linked through fiberoptics to the laser source and imaging units, located outside the harsh environment. The deployment mechanism is a remotely operated telescopic mast. Gamma irradiation up to 10{sup 7} Gy was conducted on critical sensor components with no significant impact to data transmission, and analysis indicates that critical sensor components can operate in a magnetic field with certain design modifications. Plans for testing key components in a magnetic field are underway.},
doi = {},
url = {https://www.osti.gov/biblio/629335}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 1997},
month = {Wed Dec 31 00:00:00 EST 1997}
}

Conference:
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