• J.L. Coleman, S.V. Benson, R. Evans, A.G. Grippo, K. Jordan
  Jefferson Lab, Newport News, Virginia

Funding: This work supported by the Office of Naval Research, the Joint Technology Office, the Commonwealth of Virginia, the Air Force Research Laboratory, The Army Night Vision Laboratory and by DOE Contract DEAC05-84ER40150

The Jefferson Lab FEL poses a number of challenges regarding laser safety. The IR FEL is designed to lase at powers in excess of 10 kWatt and at wavelengths from 1 to 10 microns and the UV FEL will lase at the kilowatt level from 1 micron to 250 nanometers. Additionally there are table top Class 4 lasers and a THz beam line that produces hundreds of watts. The FEL operation is further complicated by Class 4 powers in the coherent harmonics of the FEL. There are 3 modes that we operate in: alignment mode, hutch mode, and full power exclusionary. This paper describes the experience with our current Laser Safety System and the upgrades planned to allow safe operation with these many hazards.