NaI dark matter limits and the NAIAD array - a detector with improved sensitivity to WIMPs using unencapsulated NaI

被引：62

作者：

Spooner, NJC

Kudryavtsev, VA

Peak, CD

Lightfoot, PK

Lawson, TB

Lehner, MJ

McMillan, JE

Roberts, JW

Tovey, DR

Smith, NJT

Smith, PF

Lewin, JD

Homer, GJ

Alner, GJ

Sumner, TJ

Bewick, A

Jones, WG

Quenby, JJ

Liubarsky, I

Barton, JC

机构：

[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[2] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[3] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England

[4] Univ London Birkbeck Coll, London WC1E 7HX, England

来源：

PHYSICS LETTERS B | 2000年 / 473卷 / 3-4期

关键词：

scintillation detectors; dark matter; WIMP; pulse-shape discrimination;

D O I：

10.1016/S0370-2693(99)01476-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Re-analysis of published data from the UKDMC NaI(Tl) dark matter experiment is presented using latest spin factors and comparison is made with the sensitivity predicted for NAIAD, a 100 kg NaI detector concept based on unencapsulated NaI(Tl). We present experimental results and Monte Carlo simulations for NAIAD and show that a factor of 1.5-2 improvement in energy threshold is achievable over conventional NaI dark matter detectors with consequent similar to 50% improvement in nuclear recoil discrimination at 10 keV. An overall improvement in sensitivity to spin dependent WIMP interactions of factor 50, based on 100 kg x yrs of data, is predicted relative to previous UKDMC limits. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：330 / 336

页数：7

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