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Scintillation characteristics of a thallium doped sodium iodide (NaI(Tl)) crystal with a dimension of 0.6 x 0.6 x 2 cm3 are studied by attaching a silicon photomultiplier (SiPM) direct to the crystal over a temperature range from 93 to 300…

Instrumentation and Detectors · Physics 2022-03-02 H. Y. Lee , J. A. Jeon , K. W. Kim , W. K. Kim , H. S. Lee , M. H. Lee

This paper presents a world-leading scintillation light yield among inorganic crystals measured from a 0.5~kg pure-CsI detector operated at 77 Kelvin. Scintillation photons were detected by two 2-inch Hamamatsu SiPM arrays equipped with…

Instrumentation and Detectors · Physics 2024-04-17 L. Wang , G. d. Li , Z. Y. Yu , X. H. Liang , T. A. Wang , F. Liu , X. L. Sun , C. Guo , X. Zhang , L. Yu , Y. D. Chen

The amount of light produced by nuclear recoils in scintillating targets is strongly quenched compared to that produced by electrons. A precise understanding of the quenching factor is particularly interesting for WIMP searches and…

High Energy Physics - Experiment · Physics 2024-07-02 D. Cintas , S. Hedges , W. G. Thompson , P. An , C. Awe , P. S. Barbeau , E. Barbosa de Souza , J. H. Jo , L. Li , M. Martínez , R. H. Maruyama , G. C. Rich , R. Runge , M. L. Sarsa

Direct detection experiments for light dark matter are making enormous leaps in reaching previously unexplored model space. Several recent proposals rely on collective excitations, where the experimental sensitivity is highly dependent on…

High Energy Physics - Phenomenology · Physics 2021-10-22 Sinead M. Griffin , Katherine Inzani , Tanner Trickle , Zhengkang Zhang , Kathryn M. Zurek

In this contribution we report on further investigations of the recently-evaluated Constant-Fraction Time-over-Threshold (CF-ToT) method for neutron/gamma-ray pulse shape discrimination (PSD). The superiority of the CF-ToT PSD method over…

Instrumentation and Detectors · Physics 2023-05-31 A. Roy , D. Vartsky , I. Mor , C. Boiano , S. Brambilla , S. Riboldi , E. O. Cohen , Y. Yehuda-Zada , A. Beck , L. Arazi

Testing the DAMA/LIBRA annual modulation result independently of dark matter particle and halo models has been a challenge for twenty years. Using the same target material, NaI(Tl), is required and presently two experiments, ANAIS-112 and…

Instrumentation and Methods for Astrophysics · Physics 2022-03-02 D. Cintas , P. An , C. Awe , P. S. Barbeau , E. Barbosa de Souza , S. Hedges , J. H. Jo , M. Martinez , R. H. Maruyama , L. Li , G. C. Rich , J. Runge , M. L. Sarsa , W. G. Thompson

Refractive scintillation effects are powerful techniques for discriminating between different models proposed for the electron density fluctuation spectrum in the ISM. Data from our long-term scintillation study of 18 pulsars in the DM…

Astrophysics · Physics 2009-10-31 N. D. Ramesh Bhat , Yashwant Gupta , A. Pramesh Rao

A new experimental evaluation of the quenching factor for nuclear recoils in NaI[Tl] is described. Systematics affecting previous measurements are addressed by careful characterization of the emission spectrum of the neutron source, use of…

Instrumentation and Detectors · Physics 2013-09-25 J. I. Collar

Thallium-doped sodium iodide (NaI(Tl)) crystals are widely used in radiation detection applications, from gamma-ray spectroscopy to particle dark matter searches. However, if the crystal is exposed to relative humidity of even a few…

Instrumentation and Detectors · Physics 2022-11-16 Jinyoung Kim , Yujin Lee , Byoung-cheol Koh , Chang Hyon Ha , Byung Ju Park , In Soo Lee , Hyun Su Lee

In low background and low threshold particle astrophysics experiments using observation of Cherenkov or scintillation light it is common to use pairs or arrays of photomultipliers operated in coincidence. In such circumstances, for instance…

Instrumentation and Detectors · Physics 2009-06-23 M. Robinson , P. K. Lightfoot , M. J. Carson , V. A. Kudryavtsev , N. J. C. Spooner

Ultrahigh-speed optical transmission technology, such as optical time domain multiplexing or optical signal processing is a key point for increasing the communication capacity. The system performances are strongly related to pulse…

Proportional scintillation counters (PSCs), both single- and dual-phase, can measure the scintillation (S1) and ionization (S2) channels from particle interactions within the detector volume. The signal obtained from these detectors depends…

Instrumentation and Detectors · Physics 2016-03-23 Kareem Kazkaz , Tenzing Henry Yatish Joshi

A brief outline of Dark Matter detection experiments using liquid argon technology is presented. The Pulse Shape background discrimination method (PSD) is described and the example of its use in 2.3 l R&D detector is given. Methods of…

Instrumentation and Detectors · Physics 2019-08-14 Pawel Kryczynski

Silicon photomultipliers (SiPMs) are a good alternative to photomultiplier tubes (PMTs) because their gain and quantum efficiency are comparable to PMTs. However, the largest single-chip SiPM is still less than 1~cm$^2$. In order to use…

Instrumentation and Detectors · Physics 2017-11-17 Felix Liang , Hartmut Brands , Les Hoy , Jeff Preston , Jason Smith

We show that direct dark matter detection experiments can distinguish between pointlike and non-pointlike dark-matter candidates. The shape of the nuclear recoil energy spectrum from pointlike dark-matter particles, e.g., neutralinos, is…

High Energy Physics - Phenomenology · Physics 2009-11-07 Graciela Gelmini , Alexander Kusenko , Shmuel Nussinov

Gamma-ray emission from special nuclear material (SNM) is relatively easy to shield from detection using modest amounts of high-Z material. In contrast, fast-neutrons are much more penetrating and can escape relatively thick high-Z…

Instrumentation and Detectors · Physics 2022-12-14 Viacheslav A. Li , Felicia Sutanto , Timothy M. Classen , Steven A. Dazeley , Igor Jovanovic , Tingshiuan C. Wu

Pulse profile modelling is a relativistic ray-tracing technique that can be used to infer masses, radii and geometric parameters of neutron stars. In a previous study, we looked at the performance of this technique when applied to…

A detailed and accurate characterisation of silicon photomultiplier detectors is required for a better understanding of the signal and noise in many applications. The collected information is a valuable feedback to the manufacturers in…

Instrumentation and Detectors · Physics 2018-08-20 Olivier Girard , Guido Haefeli , Axel Kuonen , Luca Pescatore , Olivier Schneider , Maria Elena Stramaglia

Novel NaIL detector (5x6 inch) was investigated for aims of neutron detection in wide energy range. It has been found that the detector together with its known ability to detect the {\gamma}- radiation is also allows to distinguish neutron…

Instrumentation and Detectors · Physics 2021-12-13 D. Ponomarev , D. Filosofov , J. Khushvaktov , A. Lubashevskiy , I. Rozova , S. Rozov , K. Shakhov , Yu. Shitov , V. Timkin , E. Yakushev , I. Zhitnikov