D. Pergolesi

Publications (4)1.78 Total impact

• Source

  Available from: Sergey Uchaikin

  Article: The CRESST Experiment: Recent Results and Prospects

  P Di, Stefano, M Bruckmayer, C Bucci, S Cooper, C Cozzini, F Von Feilitzsch, T Frank, D Hauff, T Jagemann, [......], D Pergolesi, F Pröbst, Y Ramachers, J Schnagl, W Seidel, I Sergeyev, M Stark, L Stodolsky, S Uchaikin, H Wulandari
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  ABSTRACT: The CRESST experiment seeks hypothetical WIMP particles that could account for the bulk of dark matter in the Universe. The detectors are cryogenic calorimeters in which WIMPs would scatter elastically on nuclei, re-leasing phonons. The first phase of the experiment has successfully deployed several 262 g sapphire devices in the Gran Sasso underground laboratories. A main source of background has been identified as microscopic mechanical frac-turing of the crystals, and has been eliminated, improving the background rate by up to three orders of magnitude at low energies, leaving a rate close to one count per day per kg and per keV above 10 keV recoil energy. This background now appears to be dominated by radioactivity, and future CRESST scintillating calorimeters which simultaneously measure light and phonons will allow rejection of a great part of it.
  12/2000;
• Source

  Available from: Sergey Uchaikin

  Article: The CRESST dark matter search

  W. Seidel, M. Bravin, M. Bruckmayer, C. Bucci, S. Cooper, P. DiStefano, F. V. Feilitzsch, T. Frank, J. Jochum, R. Keeling, [......], U. Nagel, D. Pergolesi, F. Pröbst, Y. Ramachers, J. Schnagl, I. Sergeyev, M. Sisti, L. Stodolsky, S. Uchaikin, L. Zerle
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  ABSTRACT: We discuss the short-and long-term perspectives of the CRESST (Cryogenic Rare Event Search using Superconducting Thermometers) project and present the current status of the experiment and new results concerning detector development. In the search for elementary particle dark matter, CRESST is presently the most advanced deep underground, low-background, cryogenic facility. The basic technique involved is to search for WIMPs (Weakly Interacting Massive Particles) by the measurement of nonthermal phonons, as created by WIMP-induced nuclear recoils. Combined with our newly developed method for the simultaneous measurement of scintillation light, strong background discrimination is possible, resulting in a substantial increase in WIMP detection sensitivity. This will allow a test of the reported positive evidence for a WIMP signal by the DAMA Collaboration in the near future. In the long term, the present CRESST setup permits the installation of a detector mass up to 100 kg. In contrast to other projects, CRESST technology allows the employment of a large variety of detection materials. This offers a powerful tool in establishing a WIMP signal and in investigating WIMP properties in the event of a positive signal.
  Physics of Atomic Nuclei 06/2000; 63(7):1242-1248. · 0.57 Impact Factor
• Article: The CRESST dark matter experiment: status and perspectives

  M Sisti, M Bravin, M Bruckmayer, C Bucci, S Cooper, P.Di Stefano, S Giordano, F.v Feilitzsch, T Frank, J Jochum, [......], U Nagel, D Pergolesi, F Pröbst, Y Ramachers, J Schnagl, W Seidel, I Sergeyev, L Stodolsky, S Uchaikin, L Zerle
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  ABSTRACT: The CRESST experiment in its first phase is using sapphire detectors with tungsten phase transition thermometers to search for dark matter WIMPs. At present four 262 g detectors are performing first measurements under low background conditions. Detector performance as well as preliminary results from the background runs are presented. A second phase of CRESST using CaWO4 and simultaneous measurement of phonons and scintillation light is in preparation.
  Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 04/2000; 444(1-2):312-314. · 1.21 Impact Factor
• Conference Proceeding: The CRESST dark matter search

  J. Jochum, M. Bravin, M. Bruckmayer, C. Bucci, S. Cooper, C. Cozzini, P. Di Stefano, F. von Feilitzsch, T. Frank, T. Jagemann, [......], D. Pergolesi, F. Pr¨obst, Y. Ramachers, J. Schnagl, W. Seidel, I. Sergeyev, M. Stark, L. Stodolsky, S. Uchaikin, H. Wulandari
  the 4th International Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe, Marina Del Rey, California, 23 - 25 Feb 2000, Marina Del Rey, California; 02/2000