Electron acceleration regime envisioned at ELI-Beamlines in the Czech Republic and test experiments. Tadzio Levato tadzio.levato@eli-beams.eu SIF 23-09-2014
Content Introduction to the project and the experimental group Scientific case and Conceptual design The experimental platform and interaction regimes at ELI-Beamlines Main diagnostics and test Implementation status PW experiments and data overview
ELI-Beamlines Division Experimental Department Georg Korn (Department Head, RP2-RP6) Tadzio levato (Leader for Electron Acc., RP3) Miroslav Krus (Diagnostics) Karel Bohacek (Gamma-ray) Gabriele Grittani (Applications) Daniele Margarone (Vice Head and Leader for Ion Acc., RP3) Andriy Velyhan Jan Psikal Jan Kaufman Valentina Scuderi Martina Zakova Main list of official collaborators: Jiri Limpouch, Ondrej Klimo, Roberto Versaci, Paolo Tomassini, Tomas Lastovicka, Diego de Luis, Hyung T. Kim, Chang H. Nam, Tomas Mocek, Sergey V. Bulanov, Victor Malka, Pablo Cirrone, Giacomo Cuttone, Stepan Bulanov, Shigeo Kawata
Scientific case from the ELI White Book Electron acceleration - exploring new acceleration regimes (section 2.2.4) - compact XFEL (section 6.4.2) - relativistic flying mirror (section 2.2.4 and 6.4.3) - QED effects, inverse-compton, particle physics (section 2.1.1 and 2.1.2) - many others... White Book http://www.eli-beams.eu/wpcontent/uploads/2011/08/elibook_neues_logo-edited-web.pdf + User requirements Beamline Conceptual Design
Conceptual Design I : reliable beam High quality and reliable electron beam Basic scheme for Optical Injection and density ramp injection Courtesy of V. Malka
Conceptual Design II: counter-propagation S.V. Bulanov,... G.Korn, NIM A 660 (2011) 31 42
Conceptual design III: the 10PW Laser beam The Flying mirror configuration for Extremely High Intensity 10PW 15m TWO-STAGE approach, 1PW first stage and 9PW for second stage 10PW
The High-energy ELectron by Laser (H.E.L.L.) experimental platform I: setup Main chamber Aux chamber 1 PW 10 Hz Single laser beam Laser beam diagnostics Electron beam diagnostics Main laser beam Injector laser beam Counter-propagation laser beam tadzio.levato@eli-beams.eu
The H.E.L.L. experimental platform II: variable interaction regimes. 1 PW - 10Hz Self-Injection regime // short focal lenght OAP of 4m Quasi-linear regime // long focal lenght OAP of 25m The 10PW laser beam will be focused on the same optical axis: 150fs // kjoule class laser tadzio.levato@eli-beams.eu
The H.E.L.L. experimental platform III: performance evaluation of L3/PW. Actual L3 Ideal TEM00 Injection 2mm 3D PIC Simulations 1PW (high computational cost..) TEST OK About quais-mono energetic beam after 2mm at 400MeV
The H.E.L.L. experimental platform IV: performance for applications. 3DPIC density ramp Injector: 25pC, 60MeV, 0.2% energy spread rms, transverse emittance of 0.2 mm mrad tadzio.levato@eli-beams.eu Gas-Jet (not-guided regime) 800MeV rms spread 0.7% rms transv. Emittance 1mm mrad Capillary (guided regime) 2GeV rms spread 1.3% normalized emittance 0.77 mm mrad
The H.E.L.L. experimental platform V: main diagnostics. Laser pulse diagnostics at 10Hz Energy, pulse duration, spectral phase, phase front Electron diagnostics at 10 Hz Energy spectra, bunch charge, divergence, emittance, (bunch duration) X/Gamma ray spectroscopy User friendly analysis tools for the control system
Data analysis tools Developed by G. Grittani
Cleaner and spectrometer up to 10 GeV Low energy < 100 MeV High energy //.1 10 GeV Developed by G. Grittani and R.Versaci The Low energy electron cleaner will take under controll the high charge released in the range < 100MeV reducing the radio-protection limitations for activation Developed by K. Bohacek, Grittani, Krus
Multi-lanex profile monitor for emittance measurement.1-10 GeV spectrometer Developed by M.Krus GEANT simulated effect of the multi-lanex diagnostic (straigth line no screens)
Multi-lanex profile monitor for emittance measurement: a low energy test Geometrical emittance (Acknowledgement to CNR-ILIL and INFN) Normalized emittance tadzio.levato@eli-beams.eu
Multi-lanex profile monitor for dose estimation and radiography studies FLUKA simulated dose at different irradiation conditions Direct Radiography Magnet between object and screen, to remove secondaries cm 1 mm W converter In progress, thanks to G.Grittani and R.Versaci 1 cm W converter
HELL platform in the experimental Hall (E5) The ELI Beamlines Facility
Petawatt facility test Official Collaboration with the Korean PW facility towards multipw exp. Interaction Area Interaction Area Control Room
Petawatt experiments I: pointing and emittance at multi-gev Acknowledgement to all the Korean team of the CoreL PW facility Multi-Lanex Magnet LASER 27 J, 28 fs, 32um spot Different types of target: 1) Supersonic gas-jet, 2) modified gas-jet 3) single gas cell 4) double gas-cell Analysis in progress... tadzio.levato@eli-beams.eu lets see an overview..
Petawatt experiments II: plasma profile effect on the divergence Supersonic gas-jet (sorted data): 300-500MeV, divergence > 5mrad tadzio.levato@eli-beams.eu Modified gas-jet (sorted data): 300-500MeV, divergence up to 1mrad
Petawatt experiments III: multi-gev spectra VERY high noise production over 2GeV, up to 900 usv. The signal is hidden in the noise Double-stage Gas-cell, O2/He About 4cm log 1PW O2 He Back pressure 100-200 mbar O2 % effect on the spectra.. tadzio.levato@eli-beams.eu
Next steps plasma density profile effect, improve stability and high energy limit at given power multi-pw experiments Dedicated experimental program for high quality electron bunch at 1-10Hz, towards applications: Injector+accelerating stage, full-optical scheme in the range 1-2GeV
Thanks for your time