new hardware and setups new short pulse regime experimental results tw power future plans on laser...
TRANSCRIPT
New hardware and setupsNew hardware and setupsNew short pulse regimeNew short pulse regime
Experimental resultsExperimental resultsTW powerTW power
Future plans on laser development Future plans on laser development
ATF CO2 LASER progress
Vitaly YakimenkoVitaly YakimenkoAccelerator Test Facility, BNLAccelerator Test Facility, BNL
Until 2004, operated at the 180 ps 50 GW level.
The relatively long pulse duration was due to a narrow bandwidth of a preamplifier.
A 10-atm preamplifier acquired at the end of 2003 allowed upgrade to 30 ps 0.5 TW reported at User Meeting
In 2004, we continued upgrade of the front end picosecond pulse generator and achieved 10 ps 1 TW regime
In 2005 New oscillator was installed - better stability
Next steps : 3-ps (1 year) and 1-0.5 ps (3-4 years) upgrades.
CO2 laser status and prospects
Completed upgrade of the ATF CO2 laserto TW peak power
regenerative
Kerr generator 10 ps
Improved stability and reliabilityHigher repetition rate
New oscillator Installed in December2005
regenerative amplifier final amplifier
Pulse length 10-180 ps 10 ps (3ps -0.5 ps)
Energy 10 mJ 10 J
Repetition rate 1 Hz 1 / 20 Hz (limited by power supply)
Peak power 3 GW 1 TW (>1 TW)
Focal spot () 30 m (~10 m)
Laser strength (a0) 0.8 (>3)
Demonstrated and prospective CO2 laser performance
Nonlinear Thomson scattering experiment
Nonlinear orders
NOVA Laser
Electron interacting with a strong EM wave acquires energy
where - dimensionless laser strength parameter.
Thus, CO2 laser (=10 m) produces 100 times higher particle yield per 1
Joule to compare with presently used solid state lasers (1 m)
provided that a threshold condition is
reached.…..can be replaced with a compact TW, 10 J, 10 Hz CO2 laser.
A PW, kJ solid state laser delivering one shot per several hours…..
222amcW
cmeEa
22 100 mTWPL
1.5 meters
Ultra-fast CO2 laser technology opens new prospects for laser-driven ion sources
Prospective ion acceleration experiment at ATF
User community for the dream beams need to grow
C. Joshi, LINAC2004