1 / 9

Welcome talk I DEA meeting, Prague, 20 .- 21 . 4 .200 6

Welcome talk I DEA meeting, Prague, 20 .- 21 . 4 .200 6. I.Štekl Institute of experimental and applied physics, Czech Technical University. MEDEX workshop news Present status of the TGV II Organization remarks. 20 . 4 .200 6. I.Štekl, IDEA meeting.

larya
Download Presentation

Welcome talk I DEA meeting, Prague, 20 .- 21 . 4 .200 6

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Welcome talk IDEA meeting, Prague, 20.-21.4.2006 I.Štekl Institute of experimental and applied physics, Czech Technical University • MEDEX workshop news • Present status of the TGV II • Organization remarks 20.4.2006 I.Štekl, IDEA meeting

  2. ILIAS meeting, Prague, February 7-10, 2005

  3. MEDEX – ILIAS workshop (Corfu, September 2005) (Matrix Elements for the Double-beta-decay EXperiments) Organizing committee: Osvaldo Civitarese (University of La Plata), Jouni Suhonen (University ofJyväskylä), Ivan Štekl (Czech Technical University), Haris Kosmas (University of Ioannina) Basic features of MEDEX workshop: • direct connections between theoreticians and experimentalists (ILIAS activities – N3 = direct DM detection; N4 = search on bb decay; J2 = integrated bb decay; TA = transnational access), • two working sessions: NME for double-beta-decay, Nuclear aspects of neutrino physics and dark matter studies. • contributions will be published in Czechoslovak Journal of Physics

  4. List of participants: A. Barabash: Average half-life values for two neutrino double beta decay J. Vergados: On the direct detection of SUSY Dark Matter: Exploiting thesignatures of the reactions O. Civitarese: Extracting information about 0nbb decays from2nbb decays J. Suhonen: Beta decays and muon capture as probes of double beta matrix elements V. Egorov: m-capture rates in Se and Cd targets I. Stekl: Present results of the TGV experiment EC/EC decay of106Cd F. Avignone: The importance of nuclear matrix elements in the selection of neutrinoless double-beta-decay experiments V. Rodin: Description of the double beta decays within continuum QRPA H. Ejiri: Double beta decay matrix elements by charge exchange reactions andphoto-nuclear reactions J. Wilson: Double beta decay measurement with the COBRA experiment T. Liolios: Solar neutrinos, solar nuclear reactions and stellar evolution M. Misiaszek: Scattering of neutrinos on a polarized electron targetas a test for new physics beyond the Standard Model P. Papakonstantinou: Matrix elements of the m- - e- conversion by using CRPA P. Divari: Transition matrix elements for the m- - e+ in 27Al W. Westphal: Dark matter search with CRESST H. Kosmas: Realistic calculations for direct dark matter detection M. Valverde: Quasi-elastic neutrino-nucleus interactions V. Hasioti: A compact description of neutrino-nucleus matrix elements

  5. purpose: TGV II • to improve 48Ca result obtained by TGV I • to investigate  processes in 106Cd (to focus on EC/EC channel) 106Cd: 2nEC/EC: 48Ca: 2nbb:

  6. General view of TGV II setup Copper > 20 cm Airtight box Lead > 10 cm Polyethylene filled with boron 16 cm

  7. Summary of finished activities and present status: • two different setups (for 106Cd and 48Ca) were tunned • detector TGV II is placed in Modane underground laboratory • standard passive methods to suppress the background • suppression of microphonic background • pulse-rise time analysis • TGV spectrometer run one year with enriched 106Cd (Feb.2005-Feb.2006, 8635 hours) Future programme of EC/EC measurements: -106Cd – 12 foils, total mass = 9.948 gr., enrichment = 80% • new HPGe detectors, changing of some materials inside cryostat, more 106Cd, • TGV II now runs with standard Cd

  8. Results after 4800 hours 0+ 1138 2νEC/EC/1138 T1/2 ≥ 5.3 x 1019 y (90%CL) 2+ 512 2νβ+EC/512 T1/2 ≥ 5.8 x 1019 y (90%CL) 2νEC/EC/512 T1/2 ≥ 2.1 x 1019 y (90%CL) 2νEC/EC (0+→0+,g.s.) T1/2 ≥ 5.6 x 1019 y (90%CL) 2νβ+EC (0+→0+,g.s.) T1/2 ≥ 4.1 x 1019 y (90%CL)

  9. Organization remarks: • Banquet – Masarykova kolej restaurant, beginning at 20:00 (today) • Lunch today – at 14:00 • Conference fee – 45 EURO • Payment of accomodation in hotel Crystal – through organizing committee

More Related