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Title: Vacuum mechatronic laser alignment system on the Nova laser

Abstract

The experiments conducted on NOVA are done to investigate inertially confined laser fusion reactions. To this end, the ten beams of the laser are aligned to within 30mm. The target chamber employs a vacuum mechatronic based reticle/target positioning system to accomplish this. It is a five degree-of-freedom chamber resident system, known as the Alignment Aids Positioner or AAP. The AAP aids in beam and diagnostic alignment by accurately positioning a reticle at target chamber center to with 7mm. The AAP system increases target positioning and alignment flexibility and accuracy through the use of a computer controlled multi degree-of-freedom stage assembly. This device uses microstepping DC stepper motors with encoders to achieve closed loop control in a 10{sup {minus}6} torr vacuum. The AAP has two positioning regimes to move the alignment reticle and do beam alignment. One is course positioning in the Y-Z plane that moves a high resolution stage assembly to target chamber center. The other regime is high resolution movement in the X,Y,Z and q directions. 5 refs., 9 figs.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5797107
Report Number(s):
UCRL-JC-108752; CONF-911106-65
ON: DE92006898
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: IEEE nuclear science symposium, Santa Fe, NM (United States), 5-9 Nov 1991
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LASER TARGETS; ALIGNMENT; TARGET CHAMBERS; BEAM POSITION; DESIGN; INERTIAL CONFINEMENT; NOVA FACILITY; PERFORMANCE; ACCELERATOR FACILITIES; CONFINEMENT; PLASMA CONFINEMENT; TARGETS; 700411* - Inertial Confinement Devices- (1992-)

Citation Formats

Holliday, M, Wong, K, and Shelton, R. Vacuum mechatronic laser alignment system on the Nova laser. United States: N. p., 1991. Web.
Holliday, M, Wong, K, & Shelton, R. Vacuum mechatronic laser alignment system on the Nova laser. United States.
Holliday, M, Wong, K, and Shelton, R. 1991. "Vacuum mechatronic laser alignment system on the Nova laser". United States.
@article{osti_5797107,
title = {Vacuum mechatronic laser alignment system on the Nova laser},
author = {Holliday, M and Wong, K and Shelton, R},
abstractNote = {The experiments conducted on NOVA are done to investigate inertially confined laser fusion reactions. To this end, the ten beams of the laser are aligned to within 30mm. The target chamber employs a vacuum mechatronic based reticle/target positioning system to accomplish this. It is a five degree-of-freedom chamber resident system, known as the Alignment Aids Positioner or AAP. The AAP aids in beam and diagnostic alignment by accurately positioning a reticle at target chamber center to with 7mm. The AAP system increases target positioning and alignment flexibility and accuracy through the use of a computer controlled multi degree-of-freedom stage assembly. This device uses microstepping DC stepper motors with encoders to achieve closed loop control in a 10{sup {minus}6} torr vacuum. The AAP has two positioning regimes to move the alignment reticle and do beam alignment. One is course positioning in the Y-Z plane that moves a high resolution stage assembly to target chamber center. The other regime is high resolution movement in the X,Y,Z and q directions. 5 refs., 9 figs.},
doi = {},
url = {https://www.osti.gov/biblio/5797107}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Nov 01 00:00:00 EST 1991},
month = {Fri Nov 01 00:00:00 EST 1991}
}

Conference:
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