1. Welcome talk IDEA meeting, Prague, 20.-21.4.2006 1.MEDEX workshop news 2.Present status of the TGV II 3.Organization remarks I.Štekl Institute of experimental and applied physics, Czech Technical University I.Štekl, IDEA meeting20.4.2006

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

3. Organizing committee: Osvaldo Civitarese (University of La Plata), Jouni Suhonen (University of Jyväskylä), Ivan Štekl (Czech Technical University), Haris Kosmas (University of Ioannina) MEDEX – ILIAS workshop (Corfu, September 2005) (Matrix Elements for the Double-beta-decay EXperiments) Basic features of MEDEX workshop: - direct connections between theoreticians and experimentalists (ILIAS activities – N3 = direct DM detection; N4 = search on  decay; J2 = integrated  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 the signatures of the reactions O. Civitarese: Extracting information about 0 decays from 2  decays J. Suhonen: Beta decays and muon capture as probes of double beta matrix elements V. Egorov:  -capture rates in Se and Cd targets I. Stekl: Present results of the TGV experiment EC/EC decay of 106 Cd 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 and photo-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 target as a test for new physics beyond the Standard Model P. Papakonstantinou: Matrix elements of the  - - e - conversion by using CRPA P. Divari: Transition matrix elements for the  - - e + in 27 Al 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. TGV II to improve 48 Ca result obtained by TGV I to investigate  processes in 106 Cd (to focus on EC/EC channel) purpose: 2 EC/EC: 106 Cd: 2  : 48 Ca:

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 106 Cd and 48 Ca) 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 106 Cd (Feb.2005- Feb.2006, 8635 hours) Future programme of EC/EC measurements: - 106 Cd – 12 foils, total mass = 9.948 gr., enrichment = 80% -new HPGe detectors, changing of some materials inside cryostat, more 106 Cd, -TGV II now runs with standard Cd

8. Results after 4800 hours 2νEC/EC (0 + → 0 +,g.s.) T 1/2 ≥ 5.6 x 10 19 y (90%CL) 2νβ + EC (0 + →0 +,g.s.) T 1/2 ≥ 4.1 x 10 19 y (90%CL) 2νβ + EC/512 T 1/2 ≥ 5.8 x 10 19 y (90%CL) 2νEC/EC/512 T 1/2 ≥ 2.1 x 10 19 y (90%CL) 2 + 512 0 + 1138 2νEC/EC/1138 T 1/2 ≥ 5.3 x 10 19 y (90%CL)

9. Organization remarks: 1)Banquet – Masarykova kolej restaurant, beginning at 20:00 (today) 2)Lunch today – at 14:00 3)Conference fee – 45 EURO 4)Payment of accomodation in hotel Crystal – through organizing committee