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Efficient ultra-thin transmission silicon detectors for a single-ion irradiation system at the Lund Ion Beam Analysis Facility

Abdel, N. S.; Pallon, Jan LU ; Graczyk, Mariusz LU and Maximov, Ivan LU (2014) In Journal of Instrumentation 9.
Abstract
This paper describes the fabrication of efficient ultra-thin silicon transmission detectors for use as pre-cell detectors in single-ion experiments on living cells at the Lund Ion Beam Analysis Facility. More than 40 detectors of different thicknesses down to 5 mu m have been fabricated and packaged. The main design considerations were very low leakage current (below 9 nA) and low full depletion voltage at biases less than 0.5 V at room temperature. In addition, we have shown that cooling the device can reduce the leakage current to 3 nA. The experimental testing of the pre-cell detection system is based on counting the passage of ions through the transmission (Delta E) detector before hitting the stopping (E) detector placed behind it, to... (More)
This paper describes the fabrication of efficient ultra-thin silicon transmission detectors for use as pre-cell detectors in single-ion experiments on living cells at the Lund Ion Beam Analysis Facility. More than 40 detectors of different thicknesses down to 5 mu m have been fabricated and packaged. The main design considerations were very low leakage current (below 9 nA) and low full depletion voltage at biases less than 0.5 V at room temperature. In addition, we have shown that cooling the device can reduce the leakage current to 3 nA. The experimental testing of the pre-cell detection system is based on counting the passage of ions through the transmission (Delta E) detector before hitting the stopping (E) detector placed behind it, to ensure the accurate delivery of specific doses of radiation to the sample. Optimal detection of the fabricated detectors for the passage of an external beam of 2.2 MeV protons was obtained by cooling the device to below 2 degrees C. Cooling the Delta E detectors provides up to 20% better energy resolution and up to 98% detection efficiency for 2.2 MeV protons. The development of this kind of efficient pre-cell detector enables a range of new experiments to be conducted on thick biological samples. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Particle identification methods, dE/dx detectors, Particle tracking, detectors, Detector design and construction technologies and materials
in
Journal of Instrumentation
volume
9
publisher
IOP Publishing
external identifiers
  • wos:000340036400038
  • scopus:84903649870
ISSN
1748-0221
DOI
10.1088/1748-0221/9/06/T06002
language
English
LU publication?
yes
id
aa338930-5e47-47a7-88d0-6dd4a01af6a2 (old id 4659389)
date added to LUP
2014-09-24 15:45:53
date last changed
2017-01-01 06:10:27
@article{aa338930-5e47-47a7-88d0-6dd4a01af6a2,
  abstract     = {This paper describes the fabrication of efficient ultra-thin silicon transmission detectors for use as pre-cell detectors in single-ion experiments on living cells at the Lund Ion Beam Analysis Facility. More than 40 detectors of different thicknesses down to 5 mu m have been fabricated and packaged. The main design considerations were very low leakage current (below 9 nA) and low full depletion voltage at biases less than 0.5 V at room temperature. In addition, we have shown that cooling the device can reduce the leakage current to 3 nA. The experimental testing of the pre-cell detection system is based on counting the passage of ions through the transmission (Delta E) detector before hitting the stopping (E) detector placed behind it, to ensure the accurate delivery of specific doses of radiation to the sample. Optimal detection of the fabricated detectors for the passage of an external beam of 2.2 MeV protons was obtained by cooling the device to below 2 degrees C. Cooling the Delta E detectors provides up to 20% better energy resolution and up to 98% detection efficiency for 2.2 MeV protons. The development of this kind of efficient pre-cell detector enables a range of new experiments to be conducted on thick biological samples.},
  articleno    = {T06002},
  author       = {Abdel, N. S. and Pallon, Jan and Graczyk, Mariusz and Maximov, Ivan},
  issn         = {1748-0221},
  keyword      = {Particle identification methods,dE/dx detectors,Particle tracking,detectors,Detector design and construction technologies and materials},
  language     = {eng},
  publisher    = {IOP Publishing},
  series       = {Journal of Instrumentation},
  title        = {Efficient ultra-thin transmission silicon detectors for a single-ion irradiation system at the Lund Ion Beam Analysis Facility},
  url          = {http://dx.doi.org/10.1088/1748-0221/9/06/T06002},
  volume       = {9},
  year         = {2014},
}