Studies of prototype CsI(Tl) crystal scintillators for low-energy neutrino experiments

Liu, Y; Chen, C.P; Li, H.B; Tang, Chen-yang; Chang, C. Y.; Hou, Lei; Lai, W. P.; Li, J; Lin, S. T.; Luo, Cong; Qiu, JF; Sheng, H. Y.; Wang, C.C; Wang, M.Z; Wang, S.C; Wong, H. T.; Xin, B.; Yue, Q.; Zhao, DX; Zhao, Shujun; Zhou, Z. Y.; Zhuang, B. A.

doi:10.1016/s0168-9002(01)01458-9

Cited by 26 publications

(13 citation statements)

References 36 publications

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“…It has been well-studied [6,20] that the light emission profiles of scintillating CsI(Tl) crystals exhibit different shape for γ-rays and electrons (that is, minimum ionizing particles), as compared to that for α-particles and nuclear recoils at the >100 keV regime . Heavily ionizing events due to α-particles and nuclear recoils have faster decays than those from e/γ's − opposite to the response in liquid scintillator [21].…”

Section: Pulse Shape Discrimination In Csi(tl) Crystalsmentioning

confidence: 99%

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Measurement of the intrinsic radiopurity of 137Cs/235U/238U/232Th in CsI(Tl) crystal scintillators

Zhu¹,

Lin²,

Singh³

et al. 2006

Nuclear Instruments and Methods in Physics Research Section A:

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The inorganic crystal scintillator CsI(Tl) has been used for low energy neutrino and Dark Matter experiments, where the intrinsic radiopurity is an issue of major importance. Low-background data were taken with a CsI(Tl) crystal array at the Kuo-Sheng Reactor Neutrino Laboratory. The pulse shape discrimination capabilities of the crystal, as well as the temporal and spatial correlations of the events, provide powerful means of measuring the intrinsic radiopurity of 137 Cs as well as the 235 U, 238 U and 232 Th series. The event selection algorithms are described, with which the decay half-lives of 218 Po, 214 Po, 220 Rn, 216 Po and 212 Po were derived. The measurements of the contamination levels, their concentration gradients with the crystal growth axis, and the uniformity among different crystal samples, are reported. The radiopurity in the 238 U and 232 Th series are comparable to those of the best reported in other crystal scintillators. Significant improvements in measurement sensitivities were achieved, similar to those from dedicated massive liquid scintillator detector. This analysis also provides in situ measurements of the detector performance parameters, such as spatial resolution, quenching factors, and data acquisition dead time.

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Section: Pulse Shape Discrimination In Csi(tl) Crystalsmentioning

confidence: 99%

“…The longitudinal "Z-position" of an event can be derived from the difference of the PMT signals between the left (Q L ) and right (Q R ) sides [6,27]:…”

Section: Spatial Resolutionmentioning

confidence: 99%

Measurement of the intrinsic radiopurity of 137Cs/235U/238U/232Th in CsI(Tl) crystal scintillators

Zhu¹,

Lin²,

Singh³

et al. 2006

Nuclear Instruments and Methods in Physics Research Section A:

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“…The large target mass compensates the drop in the cross-sections. Extensive measurements on the crystal prototype modules have been performed [13]. The energy and spatial resolutions as functions of energy are depicted in Figure 6a and 6b, respectively.…”

Section: Scintillating Csi(tl) Crystalsmentioning

confidence: 99%

The Texono Research Program on Neutrino and Astroparticle Physics

Wong

2004

Mod. Phys. Lett. A

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This article reviews the research program and efforts for the TEXONO Collaboration on neutrino and astro-particle physics. The "flagship" program is on reactor-based neutrino physics at the Kuo-Sheng (KS) Power Plant in Taiwan. A limit on the neutrino magnetic moment of µν e < 1.3 × 10 −10 µ B at 90% confidence level was derived from measurements with a high purity germanium detector. Other physics topics at KS, as well as the various R&D program, are discussed

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“…A CsI(Tl) scintillating crystal [2] array with 2 kg modular mass and a total mass of 186 kg is taking data at the Kuo-Sheng (KS) Nuclear Power Plant to study low energy neutrino physics. Each module is read out by two photo-multipliers (PMTs) and the signals are recorded by a 20 MHz FADCs with 8-bit resolution [3].…”

Section: Scintillating Csi(tl) Crystal Detectormentioning

confidence: 99%

“…A large sample of unsaturated events are added together to produce a smooth reference pulse shapeȲ(t), where the peak amplitude is normalized to 1. The profiles of Y(t) due to α-and γ-events are depicted in Figure 2, and can be fitted to the function [2] …”

Section: Scintillating Csi(tl) Crystal Detectormentioning

confidence: 99%

Effective dynamic range in measurements with flash analog-to-digital convertor

Yue

Lai

Chang

et al. 2003

Nuclear Instruments and Methods in Physics Research Section A:

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Flash Analog to Digital Convertor (FADC) is frequently used in nuclear and particle physics experiments, often as the major component in big multi-channel systems. The large data volume makes the optimization of operating parameters necessary. This article reports a study of a method to extend the dynamic range of an 8-bit FADC from the nominal 2 8 value. By comparing the integrated pulse area with that of a reference profile, good energy reconstruction and event identification can be achieved on saturated events from CsI(Tl) crystal scintillators. The effective dynamic range can be extended by at least 4 more bits. The algorithm is generic and is expected to be applicable to other detector systems with FADC readout.

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Studies of prototype CsI(Tl) crystal scintillators for low-energy neutrino experiments

Cited by 26 publications

References 36 publications

Measurement of the intrinsic radiopurity of 137Cs/235U/238U/232Th in CsI(Tl) crystal scintillators

Measurement of the intrinsic radiopurity of 137Cs/235U/238U/232Th in CsI(Tl) crystal scintillators

The Texono Research Program on Neutrino and Astroparticle Physics

Effective dynamic range in measurements with flash analog-to-digital convertor

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