Response of the XENON100 Dark Matter Detector to Nuclear Recoils

Elena Aprile,M Alfonsi,K Arisaka,F Arneodo,C Balan,L Baudis,B Bauermeister,A Behrens,P Beltrame,K Bokeloh,Alistair J P Brown,Edward F Brown,S Bruenner,G Bruno,R Budnik,J M R Cardoso,W T Chen,B Choi, A P Colijn,H Contreras,J P Cussonneau,M P Decowski, E Duchovni,S Fattori,A D Ferella,W Fulgione,F Gao,M Garbini,C Geis,C Ghag, K L Giboni,L W Goetzke,C Grignon,E Gross,W Hampel,R Itay, F Kaether,G Kessler,A Kish,J Lamblin,H Landsman,R F Lang,M Le Calloch,C D P Levy,K E Lim, Qiao Lin,Sebastian Lindemann,M Lindner,J A M Lopes,K Lung,T Marrodan Undagoitia,F V Massoli,A J Melgarejo Fernandez,Yu Meng,M Messina, A Molinario,K Ni,U Oberlack,S E A Orrigo,E Pantic,R Persiani,G Plante,N Priel,A Rizzo,S S E Rosendahl,J M F Dos Santos,G Sartorelli,J Schreiner,M Schumann,L Scotto Lavina,P R Scovell,M Selvi,P Shagin,H Simgen,A Teymourian,D Thers, O Vitells,Haigeng Wang,M Weber,Ch Weinheimer, H Schuhmacher,B Wiegel

PHYSICAL REVIEW D（2013）

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摘要

Results from the nuclear recoil calibration of the XENON100 dark matter detector installed underground at the Laboratori Nazionali del Gran Sasso, Italy are presented. Data from measurements with an external AmB(241)e neutron source are compared with a detailed Monte Carlo simulation which is used to extract the energy-dependent charge-yield Q(y) and relative scintillation efficiency L-eff. A very good level of absolute spectral matching is achieved in both observable signal channels-scintillation S1 and ionization S2-along with agreement in the two-dimensional particle discrimination space. The results confirm the validity of the derived signal acceptance in earlier reported dark matter searches of the XENON100 experiment.

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