First Lasing of the Jefferson Lab IR Demo FEL

Journal Article · Sat May 01 04:00:00 EDT 1999 · Nuclear Instruments and Methods in Physics Research Section A

OSTI ID:791572

Benson, Stephen; Biallas, George; Bohn, Court; Douglas, David; Dylla, H F; Evans, R; Fugitt, Jock; Hill, R; Jordan, Kevin; Krafft, Geoffrey; Legg, R; Li, Rui; Merminga, Lia; Neil, George R; Opts, D; Piot, Philippe; Preble, Joe; Shinn, Michelle D; Siggins, Timothy; Walker, R ; Yunn, Byung

As reported previously [1], Jefferson Lab is building a free-electron laser capable of generating a continuous wave kilowatt laser beam. The driver-accelerator consists of a superconducting, energy-recovery accelerator. The initial stage of the program was to produce over 100 W of average power with no recirculation. In order to provide maximum gain the initial wavelength was chosen to be 5 mu-m and the initial beam energy was chosen to be 38.5 MeV. On June 17, 1998, the laser produced 155 Watts cw power at the laser output with a 98% reflective output coupler. On July 28th, 311 Watts cw power was obtained using a 90% reflective output coupler. A summary of the commissioning activities to date as well as some novel lasing results will be summarized in this paper. Present work is concentrated on optimizing lasing at 5 mu-m, obtaining lasing at 3 mu-m, and commissioning the recirculation transport in preparation for kilowatt lasing this fall.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 791572
• Report Number(s): JLAB-ACT-99-10; DOE/ER/40150-1997
• Journal Information: Nuclear Instruments and Methods in Physics Research Section A, Journal Name: Nuclear Instruments and Methods in Physics Research Section A Vol. 429
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CEBAF ACCELERATOR
COMMISSIONING
ENERGY RECOVERY
FREE ELECTRON LASERS
INFRARED RADIATION
SUPERCONDUCTING DEVICES