Calibration and cross-laboratory implementation of scintillating screens for electron bunch charge determination

被引：38

作者：

Kurz, Thomas ^{[1
,2
,3
]}

Couperus, Jurjen Pieter ^{[1
,3
]}

Kraemer, Jakob Matthias ^{[1
,3
]}

Ding, Hao ^{[2
,4
]}

Kuschel, Stephan ^{[5
,6
]}

Koehler, Alexander ^{[1
,3
]}

Zarini, Omid ^{[1
,3
]}

Hollatz, Dominik ^{[5
,6
]}

Schinkel, David ^{[5
,6
]}

D'Arcy, Richard ^{[7
]}

Schwinkendorf, Jan-Patrick ^{[7
,8
]}

Osterhoff, Jens ^{[7
]}

Irman, Arie ^{[1
]}

Schramm, Ulrich ^{[1
,3
]}

Karsch, Stefan ^{[2
,4
]}

机构：

[1] Helmholtz Zentrum Dresden Rossendorf, Bautzner Landstr 400, D-01328 Dresden, Germany

[2] Ludwig Maximilians Univ Munchen, Coulombwall 1, D-85748 Garching, Germany

[3] Tech Univ Dresden, D-01069 Dresden, Germany

[4] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany

[5] Helmholtz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany

[6] Friedrich Schiller Univ Jena, Furstengraben 1, D-07743 Jena, Germany

[7] DESY, Notkestr 85, D-22607 Hamburg, Germany

[8] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2018年 / 89卷 / 09期

基金：

欧盟地平线“2020”;

关键词：

LASER-PLASMA ACCELERATOR; X-RAYS; BEAMS; LIGHT;

D O I：

10.1063/1.5041755

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We revise the calibration of scintillating screens commonly used to detect relativistic electron beams with low average current, e.g., from laser-plasma accelerators, based on new and expanded measurements that include higher charge density and different types of screens than previous work [Buck et al., Rev. Sci. Instrum. 81, 033301 (2010)]. Electron peak charge densities up to 10 nC/mm(2 )were provided by focused picosecond-long electron beams delivered by the Electron Linac for beams with high Brilliance and low Emittance (ELBE) at the Helmholtz-Zentrum Dresden-Rossendorf. At low charge densities, a linear scintillation response was found, followed by the onset of saturation in the range of nC/mm(2). The absolute calibration factor (photons/sr/pC) in this linear regime was measured to be almost a factor of 2 lower than that reported by Buck et al. retrospectively implying a higher charge in the charge measurements performed with the former calibration. A good agreement was found with the results provided by Glinec et al. [Rev. Sci. Instrum. 77, 103301 (2006)]. Furthermore long-term irradiation tests with an integrated dose of approximately 50 nC/mm(2) indicate a significant decrease of the scintillation efficiency over time. Finally, in order to enable the transfer of the absolute calibration between laboratories, a new constant reference light source has been developed. Published by AIP Publishing.

引用

页数：8

共 26 条

[1]

[Anonymous], 1964, THEORY PRACTICE SCIN

[2] Response functions of Fuji imaging plates to monoenergetic protons in the energy range 0.6-3.2 MeV [J].