This article reports on the development of thin diamond detectors and their characterization for their application in temporal profile measurements of subnanosecond ion bunches. Two types of diamonds were used: a 20 μm thin polycrystalline chemical vapor deposited (CVD) diamond and a membrane with a thickness of (5 ± 1) μm etched out of a single crystal (sc) CVD diamond. The combination of a small detector electrode and an impedance matched signal outlet leads to excellent time response properties with a signal pulse resolution (FWHM) of τ = (113 ± 11) ps. Such a fast diamond detector is a perfect device for the time of flight measurements of MeV ions with bunch durations in the subnanosecond regime. The scCVD diamond membrane detector was successfully implemented within the framework of the laser ion generation handling and transport project, in which ion beams are accelerated via a laser-driven source and shaped with conventional accelerator technology. The detector was used to measure subnanosecond proton bunches with an intensity of 108 protons per bunch.
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September 2018
Research Article|
September 26 2018
Chemical-vapor deposited ultra-fast diamond detectors for temporal measurements of ion bunches
D. Jahn;
D. Jahn
a)
1
Institut für Kernphysik, Technische Universität Darmstadt
, Schloßgartenstraße 9, D-64289 Darmstadt, Germany
a)Author to whom correspondence should be addressed: d.jahn@gsi.de
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M. Träger;
M. Träger
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
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M. Kis;
M. Kis
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
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C. Brabetz
;
C. Brabetz
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
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D. Schumacher
;
D. Schumacher
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
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A. Blažević;
A. Blažević
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
3
Helmholtz Institut Jena
, Helmholtzweg 4, D-07734 Jena, Germany
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M. Ciobanu;
M. Ciobanu
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
4
Institute of Space Sciences
, Atomistilor 409, 077125 Magurele-Ilfov, Romania
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M. Pomorski;
M. Pomorski
5
CEA-LIST, Diamond Sensors Laboratory
, Gif-sur-Yvette F-91191, France
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U. Bonnes;
U. Bonnes
1
Institut für Kernphysik, Technische Universität Darmstadt
, Schloßgartenstraße 9, D-64289 Darmstadt, Germany
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S. Busold
;
S. Busold
2
GSI Helmholtzzentrum für Schwerionenforschung
, Planckstrasse 1, D-64291 Darmstadt, Germany
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F. Kroll;
F. Kroll
6
Technische Universität Dresden
, Mommsenstr. 13, 01069 Dresden, Germany
7
Helmholtz-Zentrum Dresden-Rossendorf
, Bautzner Landstr. 400, 01328 Dresden, Germany
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F.-E. Brack;
F.-E. Brack
6
Technische Universität Dresden
, Mommsenstr. 13, 01069 Dresden, Germany
7
Helmholtz-Zentrum Dresden-Rossendorf
, Bautzner Landstr. 400, 01328 Dresden, Germany
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U. Schramm
;
U. Schramm
6
Technische Universität Dresden
, Mommsenstr. 13, 01069 Dresden, Germany
7
Helmholtz-Zentrum Dresden-Rossendorf
, Bautzner Landstr. 400, 01328 Dresden, Germany
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M. Roth
M. Roth
1
Institut für Kernphysik, Technische Universität Darmstadt
, Schloßgartenstraße 9, D-64289 Darmstadt, Germany
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a)Author to whom correspondence should be addressed: d.jahn@gsi.de
Rev. Sci. Instrum. 89, 093304 (2018)
Article history
Received:
July 17 2018
Accepted:
September 09 2018
Citation
D. Jahn, M. Träger, M. Kis, C. Brabetz, D. Schumacher, A. Blažević, M. Ciobanu, M. Pomorski, U. Bonnes, S. Busold, F. Kroll, F.-E. Brack, U. Schramm, M. Roth; Chemical-vapor deposited ultra-fast diamond detectors for temporal measurements of ion bunches. Rev. Sci. Instrum. 1 September 2018; 89 (9): 093304. https://doi.org/10.1063/1.5048667
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