A novel longitudinal laserwire to non-invasively measure 6-dimensional bunch parameters at high current hydrogen ion accelerators

A novel longitudinal laserwire to non-invasively measure 6-dimensional bunch parameters at high current hydrogen ion accelerators
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一种新型纵向激光线,可在高电流氢离子加速器上非侵入式测量六维束参数

DOI:
10.1088/1742-6596/1067/7/072016
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发表时间:
2018
期刊:
Conference Series
影响因子:
--
通讯作者:
Gibson S
Gibson S
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--
文献类型:
--
作者:
Gibson S

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近年来,高电流氢离子加速器非侵入性光束诊断的光学方法得到了发展。当激光束在H -光束上扫描时,这种激光线通常会测量光分离离子产物的一维光束轮廓和/或二维横向发射度。对于激光脉冲持续时间(~ 80ns)长于射频周期(~ 3ns),探测器集成了许多完整的束,只能进行横向束监测。本文提出了一种捕获串列横向发射度的新技术。一个快速(~ 10ps)脉冲激光在每束中分离离子,并在每束的特定纵向位置同步采样连续的束。快速探测器记录了中和后的h0的空间分布和飞行时间,从而重建了横向和纵向发射度。我们模拟了一个时变脉冲激光场在H束内的相互作用,并估计了到达探测器的H 0的产率、空间和时间分布。我们总结了最近资助的纵向激光线的设计,该激光线安装在英国RAL的场效应管中。
Optical methods for non-invasive beam diagnostics of high current H− ion accelerators have been developed in recent years. Such laserwires typically measure a 1D beam profile and/or 2D transverse emittance from the products of photo-detached ions as a laser beam is scanned across the H− beam. For laser pulse durations (∼ 80 ns) longer than the RF period (∼ 3ns), the detector integrates many complete bunches, enabling only transverse beam monitoring. This paper presents a new technique to capture a series of time resolved transverse emittance measurements along the bunch train. A fast (∼ 10 ps) pulsed laser photo-detaches ions within each bunch and is synchronised to sample consecutive bunches at certain longitudinal positions along each bunch. A fast detector records the spatial distribution and time-of-flight of the neutralised H 0, thus both the transverse and longitudinal emittance are reconstructed. We present simulations of a time varying pulsed laser field interacting within an H− bunch, and estimate the yield, spatial and time distributions of H 0 arriving at the detector. We summarise the design of a recently funded longitudinal laserwire being installed in FETS at RAL, UK.
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发表时间: 1991
影响因子: 1.3
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DOI: --
发表时间: 2017
期刊: --
影响因子: --
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发表时间: 2015
期刊: Physical Review Special Topics - Accelerators and Beams
影响因子: --
作者:
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影响因子: 1.4
作者:
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通讯作者: T. C. Altman
CERN LINAC4 激光线发射扫描仪的实验结果
DOI: 10.1016/j.nima.2016.02.018
发表时间: 2016
期刊: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子: --
作者:
Hofmann T
通讯作者: Hofmann T