A 24-element Silicon PIN diode detector for high resolution radioxenon measurements using simultaneous X-ray and electron spectroscopy

Cox, Christopher E.; Hennig, Wolfgang; Huber, A.; Warburton, W. K.; Grudberg, P.; Asztalos, S. J.; Tan, Hui; Biegalski, Steven R

doi:10.1109/nssmic.2013.6829481

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…With the narrower ROIs the number of counts from the background and isotopic interferences will be reduced for 131m Xe and 133m Xe, resulting in improved detection sensitivities. Silicon-based β detectors have been shown to significantly increase the discrimination power of radioxenon detectors for the metastables by reducing interference contributions [33][34][35]. Although silicon has demonstrated improved resolution it has a higher probability for electron backscatter, which, in some cases, increases interference between ROIs.…”

Section: Interference Termsmentioning

confidence: 99%

Radioxenon net count calculations revisited

Cooper

Auer²,

Bowyer

et al. 2019

J Radioanal Nucl Chem

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Since 1998, there have been improvements in the capability to detect atmospheric radioxenon in the International Monitoring System operated by the Preparatory Commission of the Comprehensive Nuclear-Test-Ban Treaty Organization. The upgrades have resulted in next-generation versions of the radioxenon systems. This paper explores radioxenon data analysis improvements beyond the original radioxenon beta-gamma analysis equations that were formulated in 2000. Additionally, it provides recommendations to further improve analysis and refine the equations. The areas of improvement are described in terms of equations, physical detectors, and field-testing. These recommendations are provided with the intention of improving accuracy and precision of radioxenon measurements.

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Section: Interference Termsmentioning

confidence: 99%

Radioxenon net count calculations revisited

Cooper

Auer²,

Bowyer

et al. 2019

J Radioanal Nucl Chem

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“…In particular, the performance of a detector varies largely due to different pulse durations and powers. Generally, silicon-based positive-intrinsic-negative (PIN) photodiodes with features of high sensitivity, low dark current, fast response and light weight are the preferred detectors for the visible and near-infrared regions [9] in the detection and sensing field [10][11][12]. However, they are susceptible to damage under laser radiation, which may have adverse effects on the performance of a PIN photodiode [13].…”

Section: Introductionmentioning

confidence: 99%

Laser-induced damage in a silicon-based photodiode by MHz picosecond laser

Wang

et al. 2020

Laser Phys.

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Study of the damage characteristics of silicon-based photodetectors is of great significance in improv ing application performance, but few studies of laser-induced damage have been undertaken on photodetectors irradiated by hundred-p s fiber lasers. In this work, we demonstrate an all-fiber ps-pulsed laser system which outputs a pulse width of 226.5 ps and an average power of 20 W at 2.4 MHz repetition rate, with high beam quality and pulse stability. Experiments use this fiber amplifier to irradiate a silicon-based positive-intrinsic-negative (PIN) photodiode. The changes in detector performance and surface morphology are confirmed by systematic experiments o n the laser-irradiated detector. The results show that detection performance was sensitive to laser energy, and the failure damage threshold was about 864 kW cm −2 . Based on hydrodynamics theory, we simulated the laser-induced plasma density distribution in a PIN photodiode and studied the thermal and plasma damage mechanisms in the PIN photodiode.

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“…As samples typically have very low activities, several radioxenon detector systems are making use of beta/gamma coincidence counting with scintillators to reduce background [17], [18], [19], [20]. More recently, silicon detectors have been used as the electron detector [21], [22] or for electron/X-ray coincidence counting [23] in order to improve the energy resolution of conversion electron (CE) peaks. The development of an ultra-compact detection system brings several constraints:…”

Section: Introductionmentioning

confidence: 99%

Network Time Synchronization of the Readout Electronics for a New Radioactive Gas Detection System

Hennig

Thomas

Hoover

et al. 2019

IEEE Trans. Nucl. Sci.

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In systems with multiple radiation detectors, time synchronization of the data collected from different detectors is essential to reconstruct multi-detector events such as scattering and coincidences. In cases where the number of detectors exceeds the readout channels in a single data acquisition electronics module, multiple modules have to be synchronized, which is traditionally accomplished by distributing clocks and triggers via dedicated connections.To eliminate this added cabling complexity in the case of a new radioactive gas detection system prototype under development at the French Atomic Energy Commission, we implemented time synchronization between multiple XIA Pixie-Net detector readout modules through the existing Ethernet network, based on the IEEE 1588 precision time protocol. The detector system is dedicated to the measurement of radioactive gases at low activity and consists of eight large silicon pixels and two NaI(Tl) detectors, instrumented with a total of three 4-channel Pixie-Net modules. Detecting NaI(Tl)/silicon coincidences will make it possible to identify each radioisotope present in the sample. To allow these identifications at low activities, the Pixie-Net modules must be synchronized to a precision well below the targeted coincidence window of 500-1000 ns. Being equipped with an Ethernet PHY compatible with IEEE 1588 and synchronous Ethernet that outputs a locally generated but system-wide synchronized clock, the Pixie-Net can operate its analog to digital converters and digital processing circuitry with that clock and match time stamps for captured data across the three modules. Depending on the network configuration and synchronization method, the implementation is capable to achieve timing precisions between 300 ns and 200 ps. Index Terms-Radioxenon, network time synchronization, precision time protocol, coincidence detection. W. Hennig (whennig@xia.com) and S. Hoover are with XIA LLC, Hayward, CA 94544 USA. V. Thomas and O. Delaune are with CEA, DAM,

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A 24-element Silicon PIN diode detector for high resolution radioxenon measurements using simultaneous X-ray and electron spectroscopy

Cited by 4 publications

References 9 publications

Radioxenon net count calculations revisited

Radioxenon net count calculations revisited

Laser-induced damage in a silicon-based photodiode by MHz picosecond laser

Network Time Synchronization of the Readout Electronics for a New Radioactive Gas Detection System

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