A CsI(Tl) scintillating crystal detector for the studies of low-energy neutrino interactions

Li, H.B.; Liu, Y.; Cc, Chang; Chang, C. Y.; Chao, J.H.; Chen, C.P.; Chen, T.Y.; He, M.; Hou, Lei; Kiang, G. C.; Lai, W. P.; Lee, S.C.; Li, J.; Lu, J. G.; Mao, Z. P.; Sheng, H. Y.; Su, R. F.; Teng, P. K.; Wang, C.W.; Wang, S.C.; Wong, H. T.; Yeh, T.R.; Zhang, Z.Y.; Zhao, DX; Zhao, Shujun; Zhou, Z. Y.; Zhuang, B. A.

doi:10.1016/s0168-9002(00)00999-2

Cited by 30 publications

(9 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The innermost volume with a dimension of 100×80×75 cm 3 provides the flexibilities of placing different detectors for different physics topics. During the I-III data taking periods listed in Table I, both the HPGe and a CsI(Tl) scintillating crystal array [35] together with their associated inner shieldings were placed in the inner volume. The CsI(Tl) array is for the measurement of neutrino-electron scattering cross-sections.…”

Section: Experimental Set-upmentioning

confidence: 99%

Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Wong¹,

Li²,

Lin³

et al. 2007

Phys. Rev. D

Self Cite

171

108

View full text Add to dashboard Cite

A search of neutrino magnetic moments was carried out at the Kuo-Sheng Nuclear Power Station at a distance of 28 m from the 2.9 GW reactor core. With a high purity germanium detector of mass 1.06 kg surrounded by scintillating NaI(Tl) and CsI(Tl) crystals as anti-Compton detectors, a detection threshold of 5 keV and a background level of 1 kg −1 keV −1 day −1 near threshold were achieved. Details of the reactor neutrino source, experimental hardware, background understanding and analysis methods are presented. Based on 570.7 and 127.8 days of Reactor ON and OFF data, respectively, at an average Reactor ON electron anti-neutrino flux of 6.4 × 10 12 cm −2 s −1 , the limit on the neutrino magnetic moments of µν e < 7.4 × 10 −11 µB at 90% confidence level was derived. Indirect bounds on theνe radiative decay lifetimes were inferred.

show abstract

Section: Experimental Set-upmentioning

confidence: 99%

Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Wong¹,

Li²,

Lin³

et al. 2007

Phys. Rev. D

Self Cite

171

108

View full text Add to dashboard Cite

show abstract

“…The "Kuo-Sheng Neutrino Laboratory" is located at a distance of 28 m from the core #1 of the Kuo-Sheng Nuclear Power Station (KSNPS) at the northern shore of Taiwan [5]. A schematic view is depicted in Figure 1.…”

Section: Kuo-sheng Neutrino Laboratorymentioning

confidence: 99%

“…The "Flagship" program [5] is a reactor neutrino experiment to study low energy neutrino properties and interactions. It is the first particle physics experiment performed in Taiwan where local scientists are taking up major roles and responsibilities in all aspects of its operation: conception, formulation, design, prototype studies, construction, commissioning, as well as data taking and analysis.…”

Section: Introduction and Historymentioning

confidence: 99%

Research Program of the Texono Collaboration: Status and Highlights

Wong¹,

Li²

2002

Astroparticle Physics

View full text Add to dashboard Cite

show abstract

“…The ULEGe data were taken in conjunction with a CsI(Tl) scintillator array [24] for the studies of neutrinoelectron scattering. The combined DAQ rate was about 30 Hz.…”

mentioning

confidence: 99%

New limits on spin-independent and spin-dependent couplings of low-mass WIMP dark matter with a germanium detector at a threshold of 220 eV

Lin

et al. 2009

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

An energy threshold of (220±10) eV was achieved at an efficiency of 50% with a four-channel ultra-low-energy germanium detector each with an active mass of 5 g. This provides a unique probe to WIMP dark matter with mass below 10 GeV. With a data acquisition live time of 0.338 kg-day at the Kuo-Sheng Laboratory, constraints on WIMPs in the galactic halo were derived. The limits improve over previous results on both spin-independent WIMP-nucleon and spin-dependent WIMPneutron cross-sections for WIMP mass between 3−6 GeV. Sensitivities for full-scale experiments are projected. This detector technique makes the unexplored sub-keV energy window accessible for new neutrino and dark matter experiments.PACS numbers: 95.35.+d, 98.70.Vc There is compelling evidence from cosmological and astrophysical observations that about one quarter of the energy density of the universe can be attributed to Cold Dark Matter(CDM), whose nature and properties are still unknown [1]. Weakly Interacting Massive Particles (WIMP, denoted by χ) are the leading candidates for CDM. There are intense experimental efforts[2] to look for WIMPs through direct detection of nuclear recoils in χN→χN elastic scattering or in the studies of the possible products through χχ annihilations. The Kuo-Sheng(KS) Laboratory[12] is located at 28 m from a 2.9 GW reactor core with an overburden of about 30 meter-water-equivalence. Limits on neutrino magnetic moments(µ ν )[13] with a 1.06-kg germanium detector(HPGe) at a threshold of 5 keV were reported [14]. These data also allowed the studies of reactor electron neutrinos [15] and reactor axions [16]. A background level of ∼ 1 event kg −1 keV −1 day −1 (cpkkd) at 20 keV, comparable with those of underground CDM experiments, was achieved. The current goal is to develop detectors with kg-scale target mass, 100 eV-range threshold and lowbackground specifications for the studies of WIMPs, µ ν and neutrino-nucleus coherent scatterings [17].Ultra-low-energy germanium detectors(ULEGe) is a matured technique for sub-keV soft X-rays measurements. They typically have modular mass of 5−10 g while detector arrays of up to 30 elements have been constructed. Compared with Al 2 O 3 , Ge provides enhancement in χN spin-independent couplings(σ SI χN ) due to the A 2 dependence [1,18], where A is the mass number of the target isotopes. The isotope 73 Ge (natural isotopic abundance of 7.73%) comprises an unpaired neutron such that it can provide additional probe to the spin-dependent couplings of WIMPs with the neutrons(σ SD χn ). The nuclear recoils from χN interactions in ULEGe only give rise to ∼20% of the observable ionizations compared with electron recoils at the same energy. The suppression ratio is called the quenching factor(QF) [19]. For clarity, all ULEGe measurements discussed hereafter in this article are electron-equivalent-energy, unless otherwise stated.The ULEGe array consists of 4-element each having an active mass of 5 g [20]. Standard ultra-low-background specifications were adopted in its construction and ch...

show abstract

A CsI(Tl) scintillating crystal detector for the studies of low-energy neutrino interactions

Cited by 30 publications

References 74 publications

Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Search of neutrino magnetic moments with a high-purity germanium detector at the Kuo-Sheng nuclear power station

Research Program of the Texono Collaboration: Status and Highlights

New limits on spin-independent and spin-dependent couplings of low-mass WIMP dark matter with a germanium detector at a threshold of 220 eV

Contact Info

Product

Resources

About