TY - GEN
T1 - Investigating instabilities of long, intense laser pulses in plasma wakefield accelerators
AU - Yan, Jiayang
AU - Iapozzuto, Pietro
AU - Flament, Mael
AU - Joshi, Chan
AU - Jing, Yichao
AU - Kumar, Prabhat
AU - Samulvak, Roman
AU - Pogorelsky, Igor
AU - Swinson, Christina
AU - Babzien, Marcus
AU - Kusche, Karl
AU - Polyanskiy, Mikhail
AU - Fedurin, Mikhail
AU - Palmer, Mark
AU - Mori, Warren B.
AU - Zgadzaj, Rafal
AU - Welch, James
AU - Downer, Michael
AU - Lu, Wei
AU - Litvinenko, Vladimir
AU - Vafaei-Najafabadi, Navid
AU - Amorim, Ligia Diana
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - Laser wakefield acceleration (LWFA) is a promising method for reducing the cost and size of the state of the art and industrial accelerators. In the recent AE71 experimental campaign at the Brookhaven National Laboratory, a long (4 ps) powerful (300 GW) CO2 laser pulse was sent into a hydrogen gas to produce plasma wakefields. We analyzed the evolution of the laser numerically and found three distinct regions: Where the laser self-modulates, where it is transversely disrupted, and where it self-channels. The laser disruption process is similar to the hosing instability that occurs in particle-beam-driven plasma wakefield accelerators. Although hosing instability has been well studied for particle-driven acceleration, the similar instability for long laser pulses has not been clearly explained, and a technique to prevent it is still lacking. Our numerical simulations were done with Particle-In-Cell code OSIRIS. Here we show the impact that plasma ionization and laser focal position have on the interaction of the laser with the plasma in the three distinct regions.
AB - Laser wakefield acceleration (LWFA) is a promising method for reducing the cost and size of the state of the art and industrial accelerators. In the recent AE71 experimental campaign at the Brookhaven National Laboratory, a long (4 ps) powerful (300 GW) CO2 laser pulse was sent into a hydrogen gas to produce plasma wakefields. We analyzed the evolution of the laser numerically and found three distinct regions: Where the laser self-modulates, where it is transversely disrupted, and where it self-channels. The laser disruption process is similar to the hosing instability that occurs in particle-beam-driven plasma wakefield accelerators. Although hosing instability has been well studied for particle-driven acceleration, the similar instability for long laser pulses has not been clearly explained, and a technique to prevent it is still lacking. Our numerical simulations were done with Particle-In-Cell code OSIRIS. Here we show the impact that plasma ionization and laser focal position have on the interaction of the laser with the plasma in the three distinct regions.
KW - hosing instability
KW - Laser wakefield acceleration
UR - https://www.scopus.com/pages/publications/85063509867
U2 - 10.1109/AAC.2018.8659421
DO - 10.1109/AAC.2018.8659421
M3 - Conference contribution
AN - SCOPUS:85063509867
T3 - 2018 IEEE Advanced Accelerator Concepts Workshop, ACC 2018 - Proceedings
BT - 2018 IEEE Advanced Accelerator Concepts Workshop, ACC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 18th IEEE Advanced Accelerator Concepts Workshop, ACC 2018
Y2 - 12 August 2018 through 17 August 2018
ER -