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WP3: R&D for ultra-low background techniques and facilities in the EU underground labs Dr. Matthias Laubenstein Laboratori Nazionali del Gran Sasso ITALY.

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Presentation on theme: "WP3: R&D for ultra-low background techniques and facilities in the EU underground labs Dr. Matthias Laubenstein Laboratori Nazionali del Gran Sasso ITALY."— Presentation transcript:

1 WP3: R&D for ultra-low background techniques and facilities in the EU underground labs Dr. Matthias Laubenstein Laboratori Nazionali del Gran Sasso ITALY J1 General Meeting Paris (France) February 20 th, 2007

2 Feb. 20th, 2007J1 General meeting - Paris (France)2  J1-WP3 review of objectives  tasks  deliverables  outlook for next six months Summary

3 Feb. 20th, 2007J1 General meeting - Paris (France)3 J1-WP3 : Review of objectives main objectives: Construction and upgrading of innovative Ultra Low Background Facilities (ULBF) in the four underground labs They should all together form a new EU coordinated system of facilities for ultra-low background measurement applications in rare event physics and other fields (e.g. environmental physics, archeometry and radioactive dating, geophysics) of world-wide value. Implementation of new and innovative techniques to deal with the radioactive background: active and passive shielding, veto systems, particle discrimination techniques, fragmentation of calorimeter detectors, control and suppression of radon levels. Study of the feasibility of fabrication of detectors and materials underground.

4 Feb. 20th, 2007J1 General meeting - Paris (France)4 J1-WP3 : Review of objectives The final deliverable will be: A final technical report discussing the new low background facilities installed in the different labs and their impact on the support of the research activities.

5 Feb. 20th, 2007J1 General meeting - Paris (France)5 YEAR 3 - tasks LNGS:  ULBF facility for gas detectors in operation in progress, now in hall C  upgrade of ULBF facility started delayed by Commissioner works LSC:  R&D on feasibility of crystal growth u/g completed

6 Feb. 20th, 2007J1 General meeting - Paris (France)6 YEAR 3 - tasks LSC (cont'd):  electroforming copper and lead melting facility started up in progress (see pictures)

7 Feb. 20th, 2007J1 General meeting - Paris (France)7 YEAR 3 - tasks LSM:  optimised cryogenerators operational delivery in 2007  very low bg and low threshold Ge detectors optimised work in progress  system for radon removal from the air tested and optimised - done  radiochemical measurements and optimisation of this technique started building construction started in outside labs at Modane

8 Feb. 20th, 2007J1 General meeting - Paris (France)8 YEAR 3 - tasks IUS:  Ge/NaI optimised for specialist parts, shield upgrade no information, need to contact Boulby  R&D on neutron veto complete, analysis upgraded no information, need to contact Boulby

9 Feb. 20th, 2007J1 General meeting - Paris (France)9 YEAR 3 - deliverables LNGS:  ULBF facility for gas detectors operative in hall C LSC:  Technical report on feasibility of crystal growth u/g completed

10 Feb. 20th, 2007J1 General meeting - Paris (France)10 LSC (cont'd):  electroforming copper and lead melting facility operative in progress, depends on works on ug lab YEAR 3 - deliverables

11 Feb. 20th, 2007J1 General meeting - Paris (France)11 LSM:  optimised cryogenerator operative installation after delivery  system for radon removal from the air operative YEAR 3 - deliverables

12 Feb. 20th, 2007J1 General meeting - Paris (France)12 IUS:  Technical report on component U/Th and Rn no information, need to contact Boulby  neutron-muon veto facility operating no information, need to contact Boulby  design optimised no information, need to contact Boulby YEAR 3 - deliverables

13 Feb. 20th, 2007J1 General meeting - Paris (France)13 Recent developments LNGS one of the new ultra low-level Germanium detectors developed in collaboration with the MPI-K of Heidelberg is now installed with its shielding;

14 Feb. 20th, 2007J1 General meeting - Paris (France)14 Achieved improvements GeMPI 2 re-design of sample handling equipment (glove box (-), air lock (++), crane(+)) flushing detector chamber with Rn-pure N 2 (+) stringent material selection (+) incremental improvements  shield for FET made out of Roman lead  low energy calibration source device removed  no end spring on crystal  BG two times better than GeMPI

15 Feb. 20th, 2007J1 General meeting - Paris (France)15 Improvements GeMPI 3 re-design of sample handling equipment (glove box) - done more stringent material selection  problem with Pb of shielding, needs to be replaced ( 207 Bi and 208 Bi contamination) incremental improvements  old ship steel screws replaced with copper  less microphony - not achieved

16 Feb. 20th, 2007J1 General meeting - Paris (France)16 MilestoneReference peopleExpectation finalization of proportional counter facility - LNGS M. Laubenstein, H. SimgenSummer 2007 improvements on new installed HPGe detector - LNGS M. Laubenstein, M. Heiselbefore Apr. 2007 cryo generators installed and operative - LSM P. Loizabefore Apr. 2007 update on chemical treatment unit - LSM P. Loiza, F. Piquemalsummer 2007 electroforming facility update - LSCJ. M. Carmonabefore Apr. 2007 tasks and deliverables - IUSN. Spooner, V. Kudryavtsevasap Outlook for the next six months

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