Bill White LCLS Laser Group Leader April 13, 2009 1 1 Bill White
Outline Laser Requirements / Wish List Energy vs. Rep Rate Trade-offs Baseline ns laser fs laser Layout in Hutch 6 Other possibilities Helen 100 TW Summary 2 2 Bill White
Laser Requirements / Wish List Long Pulse laser for driving shocks 2-20 ns 532 nm Temporal shape control Higher energy (100s J), low rep rate (10s min) Lower energy (10s J), higher rep rate (1s min) Short Pulse <50 fs As much energy as possible 3 3 Bill White
Baseline ns laser Continuum Agilite laser Adjustable width and shape Split and Relay Imaging 4x30 J, 532nm ns laser 2x25mm glass heads with birefringence compensation 2x25mm glass heads with birefringence compensation PhasePlate PhasePlate Doubler Doubler 2x50mm glass heads with birefringence compensation 2x50mm glass heads with birefringence compensation Split and Relay Imaging Split and Relay Imaging 2x50mm glass heads with birefringence compensation 2x50mm glass heads with birefringence compensation Doubler Doubler PhasePlate PhasePlate 4 4 Bill White
Baseline ns laser Commercially available front end Standard Specs: 1064 nm 600mJ 50ns 80 µs up to 100Hz Custom Systems Up to 8J 4ns square We need YLF 1053nm 2ns - 20ns 100mJ 5 5 Bill White
Baseline ns laser Relay Imaging Intensity Serrated Aperture Radius Spatial Filter Intensity Radius Intensity Amplifier Chain Gain Radius Radius 6 6 Bill White
Baseline ns laser Layout 1 7 7 Bill White
Baseline ns laser Layout 2 Layout 3 8 8 Bill White
Baseline ns laser Layout 3 9 9 Bill White
Baseline ns laser Optimal layout depends on experimental configuration: Spatial Multiplexing: 4 Beams co-propogating with x-rays 2 Beams co/counter-propogating with x-rays 1 or more beams off-axis Temporal Multiplexing 2 pairs at double rate 4 beams at 4x rate All cases require synch path lengths = to 1 10 10 Bill White
Baseline fs laser 150 mj, 35 fs laser Commercial 4 mj system like NEH or LDRD laser from Spectra or Coherent Commercial 1.5J QS Nd:YAG Quanta Ray or Continuum SLAC built Ti:sapphire amplifier Vacuum Compressor chamber capable of handling larger gratings for upgrade to 100TW 11 11 Bill White
Hutch 6 12 12 Bill White
Baseline lasers in Hutch 6 13 13 Bill White
Baseline lasers in Hutch 6 14 14 Bill White
Baseline lasers in Hutch 6 15 15 Bill White
Baseline lasers in Hutch 6 16 16 Bill White
Hutch 6 Mezzanine 17 17 Bill White
Other Possibilities Baseline lasers Commercial 4 mj system like NEH or LDRD laser from Spectra or Coherent Commercial 1.5J QS Nd:YAG Quanta Ray or Continuum SLAC built Ti:sapphire amplifier Vacuum Compressor chamber capable of handling larger gratings for upgrade to 100TW 18 18 Bill White
Other Possibilities 100TW 100 TW Laser Commercial 4 mj system like NEH or LDRD laser from Spectra or Coherent Commercial 1.5J QS Nd:YAG Quanta Ray or Continuum SLAC built Ti:sapphire amplifier Add amplifier and gratings ns Nd:Glass Laser 4 x 30J SLAC built Ti:sapphire amplifier Vacuum Compressor chamber capable of handling larger gratings for upgrade to 100TW 19 19 Bill White
Other Possibilities - Helen Agilite laser Adjustable width and shape Beam conditioning AWE Helen 4-pass Nd:Glass 208mm disk amplifier Transport Doubler 20 20 Bill White
CPA beam line Other Possibilities - Helen HELEN Laser Main heating beam lines Capacitor room Power Supply Room 25m 13m 22m 21 40m 21 Bill White
Other Possibilities - Helen E Beam Spatial Filter Reverser HELEN laser schematic Use one four pass amplifier arm Target Chamber Backlighter Beam Deformable mirror E & W Arm 4 Pass Rod Backlighter Rod W Beam E & W Arm Regen Compressor 208mm Amplifier Optical fibre link Ring Oscillator Amplitude Modulators OPCPA OPCPA Pump fs pulse Oscillator Pulse stretcher 22 22 Bill White
Other Possibilities - Helen 23 23 Bill White
Other Possibilities - Helen Transport Spatial Filter Front End Caps Disk Amps Ignitron Chassis 24 24 Bill White
Other Possibilities - Helen 25 25 Bill White
Other Possibilities - Helen 26 26 Bill White
Summary Baseline - Long Pulse Laser 2ns - 20ns Shape Control 4 x 30J 30J @ 1/min, 60J @ 1/(2min), 120J @ 1/(4min) Baseline - Short Pulse <35 fs 150 mj 10 Hz Other possibilities Short pulse 100 TW Helen 400J @ 532 27 27 Bill White