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Proceedings Paper

A decade of operations with the laser traffic control system: paradigm shift and implied development directions
Author(s): Douglas Summers; Don Carlos Abrams; Jure Skvarč; Paola Amico; Harald Kuntschner
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Paper Abstract

The Laser Traffic Control System (LTCS) is a software solution to the problem of laser beam avoidance, using priority based collision resolution and an optional built-in laser shutter command interface. LTCS uses static site survey information, dynamic telescope pointing and control data, and a configurable "rules" scheme, to monitor laser beam geometry (Rayleigh and LGS) and warn or prevent undesired emission at participating institutions. LTCS was developed for use on Mauna Kea in 2001, but through collaborative efforts with multiple institutions, has since been enhanced and installed at several sites around the world. Functional implementations, either operational or in prototype form, exist for Mauna Kea, La Palma, Cerro Pachon, Cerro Paranal, and Haleakala. Since the last LTCS SPIE update in 2006, many important features have been added. There has also been some new site testing activity that has resulted in lessons learned and the development of new analysis/test tools. Finally, an important lasing operations paradigm shift has emerged on Mauna Kea and is anticipated for Paranal. The trend is clearly away from static collision priority rule determination, toward dynamic "negotiated" priority determination. The implications of this paradigm shift, discussion of forced collision test results and lessons learned, and a status update on development activities since the last update will be presented in the paper.

Paper Details

Date Published: 13 September 2012
PDF: 10 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84474S (13 September 2012); doi: 10.1117/12.963995
Show Author Affiliations
Douglas Summers, W. M. Keck Observatory (United States)
Don Carlos Abrams, Isaac Newton Group of Telescopes (Spain)
Jure Skvarč, Isaac Newton Group of Telescopes (Spain)
Paola Amico, European Southern Observatory (Germany)
Harald Kuntschner, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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