LASER SAFETY External EHS Expert Panel Workshop LASERS

LASER SAFETY External EHS Expert Panel Workshop

LASERS @ ELI

LASERS @ ELI L 1 • Developed in-house • 100 m. J / <20 fs / 1 k. Hz / 850 nm • E 1 hall beamlines – PXS, SRS, HHG

LASERS @ ELI L 1

LASERS @ ELI L 1 Thin disk pump laser 1 (17 m. J) Thin disk pump laser 2 (55 m. J) L 1 oscillator room Thin disk pump laser 3 (130 m. J) Thin disk pump laser 4 (450 m. J) L 1 Main Hall

LASERS @ ELI L 2 Nanosecond OPCPA pumped by DPSSL Technology development beamline PW pulses <15 fs, rep rate 10 -20 Hz Pump laser using cryogenic Yb: YAG DPSSL technology developed by STFC Rutherford Appleton Laboratory Implementation in two stages Stage 1: Pumped by existing 10 J 10 Hz laser Stage 2: Pumped by 100 J 10 Hz laser developed by STFC for Currently installed at Io. P. Hi. LASE

LASERS @ ELI L 2 Amplifier head April 2014 Vacuum tubes April 2014 High performance pulse shaping system Front End July 2014 (mid-installation)

LASERS @ ELI L 2

LASERS @ ELI L 3 • Developed as HAPLS at LLNL • Compressor developed by ELI BL • Drives ELIMAIA (p+, ion acceleration), Plasma Physics, HELL, LUX (eacceleration) PW compressor

LASERS @ ELI L 3 Parameter Value Peak power 1 PW Repetition rate 10 Hz Pulse energy after compression Pulse duration Central wavelength Output pulse energy RMS stability Temporal power contrast Electrical consumption 30 J 30 fs 820 nm better than 0. 6% 1: 109 initial, 1: 1011 optimized <150 k. W

LASERS @ ELI L 4 • Developed in cooperation with NE-EKSPLA (ELI BL develops 10 PW compressor, diagnostics and timing system) • 1. 5 k. J (compressed) / 10 PW / 150 fs / 0. 5 to 10 ns (adjustable in 100 ps steps) / 1 per minute / ~1050 nm • Drives ELIMAIA (p+, ion acceleration), Plasma Physics, HELL, LUX (eacceleration)

LASERS @ ELI L 4 Parameter Main beam energy Value 1. 5 k. J (compressed) Main beam peak power 10 PW Auxiliary beam energy 150 J (compressed) Auxiliary beam peak power 1 PW CPA pulse duration (FWHM) 150 fs Long pulse duration Shot rate 0. 5 to 10 ns (adjustable in 100 ps steps) 1 per minute

LASERS @ ELI ASTRELLA LASER • Alignment laser – 6 m. J, fs, IR • E 1 hall – SRS, PXS, HHG

LASER SAFETY CONTROLS • Engineering X administrative controls • PSI X LSS • Eye protection • Training • Laser safety program • LSO • Medical investigations

Questions What is an effective ballance between engineering and administrative controls? What is an approach for addressing effective eye wear in areas with multiple λs? How to establish robust laser safety program for laser developing researchers?

Institute of Physics AS CR, v. v. i. Harfa Office Park, 5 NP Českomoravská 2420/15 190 00 Prague 9, Czech Republic info@eli-beams. eu www. eli-beams. eu DISCUSSION