Optical Stochastic Cooling with CO2 Lasers

Details Optical Stochastic Cooling with CO2 Lasers Optical Stochastic Cooling with CO2 Lasers

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.c6003y&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

A new approach to optical-stochastic cooling is presented. We adopt the carbon dioxide (CO2) laser for the amplifier (at 10.6 microns) rather than the typically 1-micron lasers that were believed necessary for optical stochastic cooling. As a result, the power requirement of the laser is reduced thanks to the longer period of the undulator. The requirements on the stability of the beam transport system are relaxed to an acceptable level thanks to the order-of-magnitude longer wavelength of the laser. In this paper we explore the various issues related to the use of CO2 lasers for optical stochastic cooling and work out as an example the cooling gold beams in the RHIC rings. We show that a commercially available, inexpensive CO2 lasers and two relatively short undulators (under 10 meter long) will provide satisfactory cooling for RHIC, with a cooling time under two hours.

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