arXiv:1112.1376v3 [physics.ins-det] 12 Feb 2012
Preprint typeset in JINST style - HYPER VERSION
Radio-assay of Titanium samples for the LUX Experiment
D. S. Akeribb , X. Baig , S. Bedikiano , E. Bernardo , A. Bernsteine , A. Bradleyb , S. B. Cahno , M. C. Carmona-Benitezb , D. Carre , J. J. Chapmana , Y-D. Chand , K. Clarkb , T. Classen j , T.Coffeyb , S. Dazeleye , L. de Viveirosa , M. Dragowskyb , E. Druszkiewiczm , C. H. Fahama , S. Fioruccia , R. J. Gaitskella , K. R. Gibsonb , C. Halll , M. Hanhardtg , B. Holbrook j , M. Ihmi , R. G. Jacobseni , L. Kastenso , K. Kazkaze , R. Lander j , N. Larseno , C. Leeb , D. Leonardl , K. Leskod , A. Lyashenkoo , D. C. Mallinga , R. Manninoh , D. McKinseyo , D. Mein , J. Mock j , M. Moriic , H. Nelsonk , J. A. Nikkelo , M. Pangilinana , P. D. Parkero , P. Phelpsb , T. Shuttb , W. Skulskim , P. Sorensene , J. Spaansn , T. Stieglerh , R. Svoboda j , A. Smithd , M. Sweany j , M. Szydagis j , J. Thomson j , M. Tripathi j∗, J. R. Verbusa , N. Walsh j , R. Webbh , J. T. Whiteh , M. Wlasenkoc , F. L. H. Wolfsm , M. Woods j , S. Uvarov j , C. Zhangn a Brown
University, Dept. of Physics, 182 Hope St., Providence, RI 02912 Western Reserve University, Dept. of Physics, 10900 Euclid Ave, Cleveland, OH 44106 c Harvard University, Dept. of Physics, 17 Oxford St., Cambridge, MA 02138 d Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720 e Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551 f Moscow Engineering Physics Institute, 31 Kashirskoe shosse, Moscow 115409 g South Dakota School of Mines and Technology, 501 East St Joseph St., Rapid City, SD 57701 h Texas A & M University, Dept. of Physics, College Station, TX 77843 i University of California Berkeley, Dept. of Physics, Berkeley, CA 94720-7300 j University of California Davis, Dept. of Physics, One Shields Ave., Davis, CA 95616 k University of California Santa Barbara, Dept. of Physics, Santa Barbara, CA 95616 l University of Maryland, Dept. of Physics, College Park, MD 20742 m University of Rochester, Dept. of Physics and Astronomy, Rochester, NY 14627 n University of South Dakota, Dept. of Physics, 414E Clark St., Vermillion, SD 57069 o Yale University, Dept. of Physics, 217 Prospect St., New Haven, CT 06511 E-mail:
[email protected] b Case
–1–
Abstract: We report on the screening of samples of titanium metal for their radio-purity. The screening process described in this work led to the selection of materials used in the construction of the cryostats for the Large Underground Xenon (LUX) dark matter experiment [1]. Our measurements establish titanium as a highly desirable material for low background experiments searching for rare events. The sample with the lowest total long-lived activity was measured to contain
