scholarly journals Cryogenic Liquid Jets for High Repetition Rate Discovery Science

10.3791/61130 ◽  
2020 ◽  
Author(s):  
Chandra B. Curry ◽  
Christopher Schoenwaelder ◽  
Sebastian Goede ◽  
Jongjin B. Kim ◽  
Martin Rehwald ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Cryogenic Liquid ◽  
High Repetition Rate ◽  
Liquid Jets ◽  
High Repetition ◽  
Discovery Science

scholarly journals Towards High-Repetition-Rate Fast Neutron Sources Using Novel Enabling Technologies

Instruments ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 38
Author(s):  
Franziska Treffert ◽  
Chandra B. Curry ◽  
Todd Ditmire ◽  
Griffin D. Glenn ◽  
Hernan J. Quevedo ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Repetition Rate ◽  
Short Pulse ◽  
Cryogenic Liquid ◽  
High Repetition Rate ◽  
Single Shot ◽  
High Flux ◽  
Neutron Sources ◽  
High Repetition ◽  
Neutron Beams

High-flux, high-repetition-rate neutron sources are of interest in studying neutron-induced damage processes in materials relevant to fusion, ultimately guiding designs for future fusion reactors. Existing and upcoming petawatt laser systems show great potential to fulfill this need. Here, we present a platform for producing laser-driven neutron beams based on a high-repetition-rate cryogenic liquid jet target and an adaptable stacked lithium and beryllium converter. Selected ion and neutron diagnostics enable monitoring of the key parameters of both beams. A first single-shot proof-of-principle experiment successfully implemented the presented platform at the Texas Petawatt Laser facility, achieving efficient generation of a forward-directed neutron beam. This work lays the foundation for future high-repetition-rate experiments towards pulsed, high-flux, fast neutron sources for radiation-induced effect studies relevant for fusion science and applications that require neutron beams with short pulse duration.

High-repetition-rate cryogenic liquid target for terahertz wave generation

2020 ◽  
Author(s):  
Yiwen E. ◽  
Yuqi Cao ◽  
Fang Ling ◽  
Alexander P. Shkurinov ◽  
Yiming Zhu ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Terahertz Wave ◽  
Cryogenic Liquid ◽  
Wave Generation ◽  
High Repetition Rate ◽  
High Repetition

Ti3C2Tx nanosheets for high-repetition-rate wideband-tunable Q-switched fiber laser around 3 μm

2021 ◽  
pp. 1-1
Author(s):  
Liqiang Zhou ◽  
Chen Wei ◽  
Dongsheng Wang ◽  
Hao Chi ◽  
Le Zheng ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
High Repetition

scholarly journals Advanced Scheme to Generate MHz, Fully Coherent FEL Pulses at nm Wavelength

2021 ◽  
Vol 11 (13) ◽  
pp. 6058
Author(s):  
Georgia Paraskaki ◽  
Sven Ackermann ◽  
Bart Faatz ◽  
Gianluca Geloni ◽  
Tino Lang ◽  
...  
Keyword(s):  
Repetition Rate ◽  
High Harmonic ◽  
High Repetition Rate ◽  
Optical Cavities ◽  
Electron Bunches ◽  
High Repetition ◽  
Average Brightness ◽  
Technical Requirements ◽  
Harmonic Content ◽  
Unique Approach

Current FEL development efforts aim at improving the control of coherence at high repetition rate while keeping the wavelength tunability. Seeding schemes, like HGHG and EEHG, allow for the generation of fully coherent FEL pulses, but the powerful external seed laser required limits the repetition rate that can be achieved. In turn, this impacts the average brightness and the amount of statistics that experiments can do. In order to solve this issue, here we take a unique approach and discuss the use of one or more optical cavities to seed the electron bunches accelerated in a superconducting linac to modulate their energy. Like standard seeding schemes, the cavity is followed by a dispersive section, which manipulates the longitudinal phase space of the electron bunches, inducing longitudinal density modulations with high harmonic content that undergo the FEL process in an amplifier placed downstream. We will discuss technical requirements for implementing these setups and their operation range based on numerical simulations.

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