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Neutrons, originating cosmogenically or from radioactive decays, can produce signals in dark matter detectors that are indistinguishable from Weakly Interacting Massive Particles (WIMPs). To combat this background for the SuperCDMS SNOLAB…

Instrumentation and Detectors · Physics 2019-08-13 Robert Calkins , Ben Loer

Neutrons are a particularly dangerous background for direct WIMP dark matter searches; their nuclear recoils with the target nucleus are often indistinguishable from nuclear recoils produced by WIMP-nuclear collisions. In this study, we…

Instrumentation and Detectors · Physics 2016-04-06 Shawn Westerdale , Emily Shields , Frank Calaprice

A direct WIMP (Weakly Interacting Massive Particle) detector with a neutron veto system is designed to better reject neutrons. Two experimental configurations are studied in the present paper: one is for an Xe detector enclosed in a…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 Ye Xu , XiangPan Ji , ZeLong Liu , DanNing Di , HaoKai Sun , Yu Lei

In this study, simulation-based design and optimization studies of a gadolinium loaded segmented plastic scintillator detector are presented for monitoring applications of nuclear reactors in Turkey using antineutrinos. For the first time…

Instrumentation and Detectors · Physics 2019-12-25 Sertac Ozturk

We present a conceptual design for an active neutron veto, based on boron-loaded liquid scintillator, for use in direct-detection dark matter experiments. The simulated efficiency of a 1 meter thick veto, after including the effects of…

Nuclear Experiment · Physics 2011-06-13 Alex Wright , Pablo Mosteiro , Ben Loer , Frank Calaprice

We developed a 12-liter volume neutron detector filled with the liquid scintillator EJ301 that measures neutrons in an underground laboratory where dark matter and neutrino experiments are located. The detector target is a cylindrical…

Instrumentation and Detectors · Physics 2015-06-15 C. Zhang , D. -M. Mei , P. Davis , B. Woltman , F. Gray

A liquid scintillator (LS) is developed for the Taishan Antineutrino Observatory (TAO), a ton-level neutrino detector to measure the reactor antineutrino spectrum with sub-percent energy resolution by adopting Silicon Photomultipliers…

Instrumentation and Detectors · Physics 2021-07-07 Zhangquan Xie , Jun Cao , Yayun Ding , Mengchao Liu , Xilei Sun , Wei Wang , Yuguang Xie

A large-volume liquid scintillator can be used as a tracking detector to measure high-energy neutrino events, like atmospheric neutrinos and neutrino beams. The lepton flavor recognition is almost absolute above 1 GeV. The energy resolution…

Instrumentation and Detectors · Physics 2009-09-29 Juha Peltoniemi

Spontaneous and induced fission in Special Nuclear Material (SNM) such as 235U and 239Pu results in the emission of neutrons and high energy gamma-rays. The multiplicities of and time correlations between these particles are both powerful…

Nuclear Experiment · Physics 2009-08-05 S. Dazeley , A. Bernstein , N. S. Bowden , R. Svoboda

We present a method for detecting neutrons using scintillating lithium gadolinium borate crystal shards in a plastic matrix while maintaining high gamma rejection. We have procured two cylindrical detectors, 5"\times5", containing 1%…

Nuclear Experiment · Physics 2011-09-20 Kareem Kazkaz , Nathaniel S. Bowden , Marisa Pedretti

Monitoring of high energy cosmic ray neutrons is of particular interest for cosmic ray water Cherenkov detectors as intense bundles of delayed neutrons have been found to arrive after the initial passage of a high energy air shower. In this…

Instrumentation and Detectors · Physics 2022-03-02 P. Stowell , S. Fargher , L. F. Thompson , A. M. Brown , P. M. Chadwick

Over the course of several decades, organic liquid scintillators have formed the basis for successful neutrino detectors. Gadolinium-loaded liquid scintillators provide efficient background suppression for electron antineutrino detection at…

Instrumentation and Detectors · Physics 2012-06-26 C. Aberle , C. Buck , B. Gramlich , F. X. Hartmann , M. Lindner , S. Schönert , U. Schwan , S. Wagner , H. Watanabe

We report on the design and performance of the LUX-ZEPLIN (LZ) "Screener", a small liquid scintillator detector consisting of $\approx 23$ kg of LAB-based gadolinium-loaded liquid scintillator (GdLS) to be used in the LZ Outer Detector. The…

Instrumentation and Detectors · Physics 2019-05-29 S. J. Haselschwardt , S. Shaw , H. N. Nelson , M. S. Witherell , M. Yeh , K. T. Lesko , A. Cole , S. Kyre , D. T. White

A new type of neutron detector, named Stack Structure Solid organic Scintillator (S$^4$), consisting of multi-layer plastic scintillators with capability to suppress low-energy $\gamma$ rays under high-counting rate has been constructed and…

We report on the development of a fast neutron detector using a liquid scintillator doped with enriched Li-6. The lithium was introduced in the form of an aqueous LiCl micro-emulsion with a di-isopropylnaphthalene-based liquid scintillator.…

Neutron veto detector based on liquid scintillator containing hydrogen atoms is an integral part of any underground experiment for dark matter search. So far, a flammable mixture of liquid hydrocarbons was used as a liquid scintillator in…

Instrumentation and Detectors · Physics 2020-07-06 A. Bondar , E. Borisova , A. Buzulutskov , E. Frolov , V. Nosov , V. Oleynikov , A. Sokolov

Detectors based on liquid or gas xenon have been used and are in use for a number of applications, in particular for the detection of gamma rays. Xenon is a well-suited medium for gamma spectroscopy thanks to its high atomic number and,…

Instrumentation and Detectors · Physics 2013-09-10 F. Resnati

The next generation of very-short-baseline reactor experiments will require compact detectors operating at surface level and close to a nuclear reactor. This paper presents a new detector concept based on a composite solid scintillator…

We propose modifying large water \v{C}erenkov detectors by the addition of 0.2% gadolinium trichloride, which is highly soluble, newly inexpensive, and transparent in solution. Since Gd has an enormous cross section for radiative neutron…

High Energy Physics - Phenomenology · Physics 2009-11-10 John F. Beacom , Mark R. Vagins

Liquid scintillator detectors are widely used in modern neutrino studies. The unique optical properties of semiconducting nanocrystals, known as quantum dots, offer intriguing possibilities for improving standard liquid scintillator,…

Instrumentation and Detectors · Physics 2012-10-16 Lindley Winslow , Raspberry Simpson
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