1. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 1 Zaragoza, 23th November 2007 JRA1 7th General Meeting Low background techniques for deep underground sciences

2. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 2 JRA1 WPs WP1 – Measurement of backgrounds in the EU underground labs WP2 – Development of a library of background simulation codes WP3 – R&D for UL background techniques and facilities in the labs WP4 – R&D on radio-purity of materials and purification techniques JRA1 participants Contractors: UNIZAR, CEA/CNRS, INFN, USFD, MPIK, TUM, JRC Non-contractors: RAL, FZK, Dortmund, Silesia, Henryk Niewodniczanski, Pol. Milano, CUPP

3. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 3 DateMeetingLocation Participants Website 20/02/07 5th JRA1 General MeetingParis7 www.unizar.es/ ilias/JRA1/05.htm 28/05/07 6th JRA1 General MeetingLNGS15 www.unizar.es/ ilias/JRA1/05.htm 23/11/07 7th JRA1 General MeetingZaragoza~ 20 Meetings

4. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 4

5. 5 Activity progress - All databases operative, apart from background data (WP1) (it is almost complete, see Alba Formicola’s talk) - All low background facilities working (but see next slide)

6. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 6 Activity progress - All databases operative, apart from background data (WP1) (it is almost complete, see Alba Formicola’s talk) - All low background facilities working (but see next slide)

7. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 7 Pending issues Non-completed deliverables from year 3: - Technical Report on crystal growth underground (it will be ready before end of the year) - Optimized cryogenerators operative at LSM (new detector received in September, now under characterization) Minor delays: - Electroforming copper facility operative (impossible to install at LSC at the moment) - ULBF for gas detectors at LNGS (units to be transferred from MPIK to LNGS)

8. JRA1 7th General Meeting. Zaragoza, Nov 2007 JRA1 web page http://www.unizar.es/ilias 8 News&Highlights - New background database on-line (see talk by Alba Formicola) - Muon measurements combined with MC simulations at LSC (see talk by Héctor Gómez) - New ultralow background HPGe-detector received on 20th September at LSM, manufactured in collaboration with Canberra, now under characterization (see talk by Pia Loaiza) - New database of low-level detectors at ILIAS labs (see talk by Matthias Laubenstein)