The ANSTO high energy heavy ion microprobe

Siegele, Rainer; Cohen, David D.; Dytlewski, N.

doi:10.1016/s0168-583x(99)00393-6

Cited by 70 publications

(33 citation statements)

References 4 publications

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“…IBIC measurements were performed using the Australian Nuclear Science and Technology (ANSTO) microprobe [17], where a 3 MeV He beam with a spot size of 12 m was scanned over the detector with a normal incident angle to the detector frontside (cathode). A spectroscopic shaping amplifier (CANBERRA 2025) was used for subsequent charge pulse amplification.…”

Section: Ibic Resultsmentioning

confidence: 99%

Evaluation of Silicon Detectors With Integrated JFET for Biomedical Applications

Safavi-Naeini

Franklin

Lerch

et al. 2009

IEEE Trans. Nucl. Sci.

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Abstract-This paper presents initial results from electrical, spectroscopic and ion beam induced charge (IBIC) characterisation of a novel silicon PIN detector, featuring an on-chip -channel JFET and matched feedback capacitor integrated on its -side (frontside). This structure reduces electronic noise by minimising stray capacitance and enables highly efficient optical coupling between the detector back-side and scintillator, providing a fill factor of close to 100%. The detector is specifically designed for use in high resolution gamma cameras, where a pixellated scintillator crystal is directly coupled to an array of silicon photodetectors. The on-chip JFET is matched with the photodiode capacitance and forms the input stage of an external charge sensitive preamplifier (CSA). The integrated monolithic feedback capacitor eliminates the need for an external feedback capacitor in the external electronic readout circuit, improving the system performance by eliminating uncontrolled parasitic capacitances. An optimised noise figure of 152 electrons RMS was obtained with a shaping time of 2 s and a total detector capacitance of 2pF. The energy resolution obtained at room temperature (21 C) at 27 keV (direct interaction of I-125 gamma rays) was 5.09%, measured at full width at half maximum (FWHM). The effectiveness of the guard ring in minimising the detector leakage current and its influence on the total charge collection volume is clearly demonstrated by the IBIC images.

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Section: Ibic Resultsmentioning

confidence: 99%

Evaluation of Silicon Detectors With Integrated JFET for Biomedical Applications

Safavi-Naeini

Franklin

Lerch

et al. 2009

IEEE Trans. Nucl. Sci.

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“…The charge collection efficiency for the different types of the 3D detectors was investigated using the IBIC technique on the Heavy Ion Microprobe at ANSTO [13]. The IBIC measurements utilized a microbeam of 5.5 MeV He 2+ ions focused to a diameter of approximately 1 μm which was raster scanned over the surface of the sample.…”

Section: Charge Collection Studymentioning

confidence: 99%

3D Radiation Detectors: Charge Collection Characterisation and Applicability of Technology for Microdosimetry

Tran

Prokopovich

Petasecca

et al. 2014

IEEE Trans. Nucl. Sci.

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Abstract-A study of charge collection in SINTEF 3D active edge silicon detectors was carried out at ANSTO using Ion Beam Induced Charge (IBIC) technique. An IBIC study has shown that several different geometries of 3D detectors have full depletion under low applied bias. The effect of fast neutron and gamma radiation on their charge collection efficiency was also investigated. A 3D active edge silicon detector technology has demonstrated extremely promising performance for application of the 3D Sensitive Volumes (SVs) fabrication methods to SOI microdosimetry.

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“…The ANTARES tandemaccelerator facility provides a proton beam with a selectable energy of up to 5 MeV and an energy stability of better than 0.1% [6]. The beam size when focused on the scintillator was of order of 1 µm.…”

Section: The Antares Heavy Ion Microprobementioning

confidence: 99%

“…This paper presents the results for the first prototype of a tile detector with SiPM readout for use in the Fast Neutron Tracker. The energy resolution, linearity and spatial uniformity of the detector's response were characterised using a proton beam of selectable energy from the ANTARES Heavy Ion Microprobe at ANSTO, Lucas Heights, Australia [6]. Single and multiple neutron recoil events were collected in a multilayer detector configuration using 14 MeV neutrons from a Deuterium-Tritium (DT) neutron generator operated at CSIRO PSE, Lucas Heights, Australia.…”

Section: Introductionmentioning

confidence: 99%

Proton beam characterisation of a prototype thin-tile plastic scintillator detector with SiPM readout for use in fast-neutron tracker

et al. 2012

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, J. (2012). Proton beam characterisation of a prototype thin-tile plastic scintillator detector with SiPM readout for use in fast-neutron tracker. Journal of Instrumentation, 7 (2), 1-14. ABSTRACT: We present details of the construction and characterisation of a prototype thin-tile plastic scintillation detector for use in a multi-layer Fast Neutron Tracker. Scintillation light is read out using solid-state silicon photomultiplier detectors (SiPMs). The Tracker consists of alternating scintillator and Timepix detector layers. The scintillator tile provides a hydrogen-rich target, in which impinging fast neutrons produce recoil protons. The energy lost by protons in the plastic scintillator are measured and recoil protons exiting the scintillator are tracked in the Timepix detector. The combination of signals from the scintillator and Timepix provides information to reconstruct the energy or direction of the impinging neutron, using calculations based on the kinematics of the elastic neutron scattering. Proton Beam Characterisation of aThree prototype scintillation detectors were constructed, using either a pair of 3x3 mm sensitive area SPMMicro3035 SiPMs from SensL or a pair of MAPD-3n SiPMs from Zecotek. The detector performances were characterised using a mono-energetic proton beam. An absolute energy calibration was measured at 3, 4 and 5 MeV proton energies with good linearity. The best measured energy resolution was 29.8% at 5 MeV. Spatial uniformity was assessed by measuring the response across the detector face. Finally, the tile detector's ability to provide a trigger for Timepix acquisition in the stack configuration was demonstrated for single and double neutron recoil events using a DT neutron source. The SiPM-based design was found to be well-suited for the application of the multi-layer fast neutron tracker.

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The ANSTO high energy heavy ion microprobe

Cited by 70 publications

References 4 publications

Evaluation of Silicon Detectors With Integrated JFET for Biomedical Applications

Evaluation of Silicon Detectors With Integrated JFET for Biomedical Applications

3D Radiation Detectors: Charge Collection Characterisation and Applicability of Technology for Microdosimetry

Proton beam characterisation of a prototype thin-tile plastic scintillator detector with SiPM readout for use in fast-neutron tracker

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