Title of article
Study and suppression of anomalous fast events in inorganic scintillators for dark matter searches
Author/Authors
Kudryavtsev، نويسنده , , V.A and Spooner، نويسنده , , N.J.C and Lightfoot، نويسنده , , P.K and Roberts، نويسنده , , J.W and Lehner، نويسنده , , M.J and Gamble، نويسنده , , T and Carson، نويسنده , , M.J and Lawson، نويسنده , , T.B and Lüscher، نويسنده , , R and McMillan، نويسنده , , J.E and Morgan، نويسنده , , B and Paling، نويسنده , , S.M and Robinson، نويسنده , , M and Tovey، نويسنده , , D.R and Smith، نويسنده , , N.J.T and Smith، نويسنده , , P.F and Alner، نويسنده , , G.J and Hart، نويسنده , , S.P and Lewin، نويسنده , , J.D and Preece، نويسنده , , R.M and Sumner، نويسنده , , T.J and Jones، نويسنده , , W.G and Quenby، نويسنده , , J.J and Ahmed، نويسنده , , B and Bewick، نويسنده , , A and Davidge، نويسنده , , D and Dawson، نويسنده , , J.V and Howard، نويسنده , , A.S and Ivaniouchenkov، نويسنده , , I and Joshi، نويسنده , , M.K and Lebedenko، نويسنده , , V and Liubarsky، نويسنده , , I and Barton، نويسنده , , J.C and Gerbier، نويسنده , , G and Mallet، نويسنده , , J and Mosca، نويسنده , , L and Tao، نويسنده , , C، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
8
From page
401
To page
408
Abstract
The status of dark matter searches with inorganic scintillator detectors at Boulby mine is reviewed and the results of tests with a CsI(Tl) crystal are presented. The objectives of the latter experiment were to study anomalous fast events previously observed and to identify ways to remove this background. Clear indications were found that these events were due to surface contamination of crystals by alphas, probably from radon decay. A new array of unencapsulated NaI(Tl) crystals immersed either in liquid paraffin or pure nitrogen atmosphere is under construction at Boulby. Such an approach allows complete control of the surface of the crystals and the ability to remove any surface contamination. First data from the unencapsulated NaI(Tl) do not show the presence of anomalous fast events.
Keywords
Scintillation detectors , Inorganic crystals , Dark matter , WIMP , Pulse shape analysis
Journal title
Astroparticle Physics
Serial Year
2002
Journal title
Astroparticle Physics
Record number
1328888
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