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@InProceedings{hocquet:icalepcs2019-mopha059,
author = {S. Hocquet and N. Bazoge and T. Falgon and Ph. Hours and D. Monnier-Bourdin and T. Somerlinck},
title = {{Ultra-High Precision Timing System for the CEA-Laser Megajoule}},
booktitle = {Proc. ICALEPCS'19},
pages = {347--350},
paper = {MOPHA059},
language = {english},
keywords = {controls, timing, laser, ISOL, shielding},
venue = {New York, NY, USA},
series = {International Conference on Accelerator and Large Experimental Physics Control Systems},
number = {17},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2020},
issn = {2226-0358},
isbn = {978-3-95450-209-7},
doi = {10.18429/JACoW-ICALEPCS2019-MOPHA059},
url = {https://jacow.org/icalepcs2019/papers/mopha059.pdf},
note = {https://doi.org/10.18429/JACoW-ICALEPCS2019-MOPHA059},
abstract = {High power laser such as the Laser MegaJoule (LMJ) or National Ignition Facility (NIF) requires different types of trigger precision to synchronize all the laser beams, plasma diagnostics and generate fiducials. Greenfield Technology, which designs and produces picosecond delay generator and timing system for about 20 years, has been hired by CEA to develop new products to meet the LMJ requirements. About 2000 triggers are about to be set to control and synchronize all of the 176 laser beams on the target with a precision better than 40 ps RMS. Among these triggers, Greenfield Technology’s GFT10¹² is a 4-channels delay generator challenging ultra-high performances: an ultra-low jitter between 2 slaves below 4 ps RMS and a peak-to-peak wander over 1 week lower than 6 ps due to a thermal control of the most sensitive part (the thermal drift is below 1 ps/°C) and specific developments for clock management and restitution. On going investigation should bring the jitter close to 2 ps RMS between 2 slaves.},
}