等离子体中长相对论粒子束团的冲洗

Hosing of a Long Relativistic Particle Bunch in Plasma.

作者信息

Nechaeva T, Verra L, Pucek J, Ranc L, Bergamaschi M, Zevi Della Porta G, Muggli P, Agnello R, Ahdida C C, Amoedo C, Andrebe Y, Apsimon O, Apsimon R, Arnesano J M, Bencini V, Blanchard P, Burrows P N, Buttenschön B, Caldwell A, Chung M, Cooke D A, Davut C, Demeter G, Dexter A C, Doebert S, Farmer J, Fasoli A, Fonseca R, Furno I, Granados E, Granetzny M, Graubner T, Grulke O, Gschwendtner E, Guran E, Henderson J, Kedves M Á, Kim S-Y, Kraus F, Krupa M, Lefevre T, Liang L, Liu S, Lopes N, Lotov K, Martinez Calderon M, Mazzoni S, Moon K, Morales Guzmán P I, Moreira M, Okhotnikov N, Pakuza C, Pannell F, Pardons A, Pepitone K, Poimenidou E, Pukhov A, Rey S, Rossel R, Saberi H, Schmitz O, Senes E, Silva F, Silva L, Spear B, Stollberg C, Sublet A, Swain C, Topaloudis A, Torrado N, Turner M, Velotti F, Verzilov V, Vieira J, Welsch C, Wendt M, Wing M, Wolfenden J, Woolley B, Xia G, Yarygova V, Zepp M

机构信息

Max Planck Institute for Physics, 80805 Munich, Germany.

CERN, 1211 Geneva 23, Switzerland.

出版信息

Phys Rev Lett. 2024 Feb 16;132(7):075001. doi: 10.1103/PhysRevLett.132.075001.

DOI:10.1103/PhysRevLett.132.075001

PMID:38427892

Abstract

Experimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment, self-modulation in the perpendicular plane, at frequencies close to the plasma electron frequency, and are reproducible. Development of hosing depends on misalignment direction, its growth on misalignment extent and on proton bunch charge. Results have the main characteristics of a theoretical model, are relevant to other plasma-based accelerators and represent the first characterization of hosing.

摘要

实验结果表明，等离子体中长粒子束团的软管不稳定性可由前一个短的、未对准的束团驱动的尾场诱发。软管不稳定性在未对准平面内发展，在垂直平面内发生自调制，频率接近等离子体电子频率，且具有可重复性。软管不稳定性的发展取决于未对准方向，其增长取决于未对准程度和质子束团电荷量。结果具有理论模型的主要特征，与其他基于等离子体的加速器相关，代表了软管不稳定性的首次特征描述。