Characterization of an Ionization Readout Tile for nEXO

doi:10.1088/1748-0221/13/01/P01006

	Characterization of an Ionization Readout Tile for nEXO
	nEXO Collaboration
刊名	JOURNAL OF INSTRUMENTATION
	2018
卷号	13 页码:P01006
关键词	Charge induction Charge transport and multiplication in liquid media Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc) Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc)
ISSN号	1748-0221
DOI	10.1088/1748-0221/13/01/P01006
文献子类	Article
英文摘要	A new design for the anode of a time projection chamber, consisting of a charge-detecting "tile", is investigated for use in large scale liquid xenon detectors. The tile is produced by depositing 60 orthogonal metal charge-collecting strips, 3 mm wide, on a 10 cm x 10 cm fused-silica wafer. These charge tiles may be employed by large detectors, such as the proposed tonne-scale nEXO experiment to search for neutrinoless double-beta decay. Modular by design, an array of tiles can cover a sizable area. The width of each strip is small compared to the size of the tile, so a Frisch grid is not required. A grid-less, tiled anode design is beneficial for an experiment such as nEXO, where a wire tensioning support structure and Frisch grid might contribute radioactive backgrounds and would have to be designed to accommodate cycling to cryogenic temperatures. The segmented anode also reduces some degeneracies in signal reconstruction that arise in large-area crossed-wire time projection chambers. A prototype tile was tested in a cell containing liquid xenon. Very good agreement is achieved between the measured ionization spectrum of a Bi-207 source and simulations that include the microphysics of recombination in xenon and a detailed modeling of the electrostatic field of the detector. An energy resolution sigma/E = 5.5% is observed at 570 keV, comparable to the best intrinsic ionization-only resolution reported in literature for liquid xenon at 936 V/cm.
WOS研究方向	Instruments & Instrumentation
语种	英语
WOS记录号	WOS:000419936400002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285533]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	nEXO Collaboration. Characterization of an Ionization Readout Tile for nEXO[J]. JOURNAL OF INSTRUMENTATION,2018,13:P01006.
APA	nEXO Collaboration.(2018).Characterization of an Ionization Readout Tile for nEXO.JOURNAL OF INSTRUMENTATION,13,P01006.
MLA	nEXO Collaboration."Characterization of an Ionization Readout Tile for nEXO".JOURNAL OF INSTRUMENTATION 13(2018):P01006.