Methods for the spatio-temporal shaping of photocathode laser pulses for generating high brightness electron beams in modern linear accelerators are discussed. The possibility of forming triangular laser pulses and quasi-ellipsoidal structures is analyzed. The proposed scheme for generating shaped laser pulses was realised at the Institute of Applied Physics (IAP) RAS. Currently, a prototype of the pulse shaping laser system is installed at the Photo Injector Test facility at DESY, Zeuthen site (PITZ). Preliminary experiments on electron beams generation using ultraviolet laser pulses from this system were carried out at PITZ, in which electron bunches with 0.5 nC charge and a transverse normalized emittance of 1.1 mm mrad were obtained. A new scheme for the three-dimensional shaping of laser beams using a volume Bragg grating is proposed at IAP RAS and is currently being tested for further electron beam generation experiments at the PITZ photoinjector.

Keywords: 3D shaping of laser pulses, photoinjector, linear electron accelerator, generation and acceleration of electron beams, normalized transverse emittance PACS: 29.20.−c, 29.27.Ac, 42.60.By, 42.60.−v (all) DOI: 10.3367/UFNe.2017.03.038143 URL: https://ufn.ru/en/articles/2017/10/g/ 000419110600007 2-s2.0-85040942847 2017PhyU...60.1039M Citation: Mironov S Yu, Andrianov A V, Gacheva E I, Zelenogorsky V V, Potemkin A K, Khazanov E A, Boonpornprasert P, Gross M, Good J D, Isaev I, Kalantaryan D, Kozak T, Krasilnikov M, Qian H, Li X, Lishilin O, Melkumyan D, Oppelt A, Renier Y, Rublack T, Felber M, Huck H, Chen Y L, Stephan F "Spatio-temporal shaping of photocathode laser pulses for linear electron accelerators" Phys. Usp. 60 1039–1050 (2017) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Received: 16th, May 2017, accepted: 1st, March 2017 Оригинал: Миронов С Ю, Андрианов А В, Гачева Е И, Зеленогорский В В, Потемкин А К, Хазанов Е А, Бонпорнпрасерт П, Грос М, Гуд Дж, Исаев И, Калантарян Д, Козак Т, Красильников М, Кьян Х, Ли К, Лишилин О, Мелкумян Д, Оппельт А, Ренье И, Рублак Т, Фельбер М, Хук Х, Чен Й, Штефан Ф «Пространственно-временное профилирование лазерных импульсов для фотокатодов линейных ускорителей электронов» УФН 187 1121–1133 (2017); DOI: 10.3367/UFNr.2017.03.038143