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THE LABORATORY FOR LOW-LEVEL RADIOACTIVITY LNGS

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Presentation on theme: "THE LABORATORY FOR LOW-LEVEL RADIOACTIVITY LNGS"— Presentation transcript:

1 THE LABORATORY FOR LOW-LEVEL RADIOACTIVITY MEASUREMENTS @ LNGS
Matthias Laubenstein I.N.F.N. - L.N.G.S.

2 Location (present and future)
Present: 32 m2 on one floor in service tunnel Future: 60 m2 distributed on three floors in hall A 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

3 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

4 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

5 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

6 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

7 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
511 keV 40K 208Tl 60Co 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

8 HPGe detectors detector
total and peak background count rate [d-1 kg-1Ge] keV 352 keV 583 keV 1461 keV GeBer 3686 3.3 1.5 4.6 GeMi 611 5.6 2.1 5.2 GePV 482 2.8 3.2 GsOr 469 2.4 0.76 4.3 GePaolo 226 0.83 0.38 1.4 GeCris 87 <0.39 <0.29 1.0 GeMPI 30 <0.20 <0.15 0.36 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

9 Collaboration of European Low-Level Underground Laboratories
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

10 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
IRMM University of Iceland PTB VKTA LSCE MPI-K ARCS IAEA-MEL LNGS 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

11 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-1 100 101 102 103 104 105 106 Normalised counting rate [d-1 kg-1] 10-2 Depth [m w.e.] 3000 1000 2000 4000 5000 Muon fluence rate [a.u.] above ground VKTA Rossendorf PTB LSCE JRC-IRMM LNGS 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

12 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-1 100 101 102 103 104 105 106 Normalised counting rate [d-1 kg-1] 10-2 Depth [m w.e.] 3000 1000 2000 4000 5000 Muon fluence rate [a.u.] LNGS 1993 1996 1997 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

13 Background characterisation
gamma spectrometry directional photon flux in hall A (with portable HPGe detector and MCA) method rather fast and simple (LN2-free cooling, simple setup) 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

14 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
First results of photon background characterisation in hall A (by courtesy of O. Chkvorets) 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

15 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
First results of photon background characterisation in hall A (by courtesy of O. Chkvorets) 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

16 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
First results of photon background characterisation in hall A (by courtesy of O. Chkvorets) 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

17 Further scientific topics
Radiocarbon and tritium measurements (Radiodating Laboratory) Radon groundwater monitoring (Environmental and geophysical monitoring of the Gran Sasso aquifer) Development and characterization of new detectors (for nuclear spectrometry of environmental radioactivity) 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

18 Radiocarbon measurements
ERMES Ultra low-level liquid scintillation spectroscopy  Using YAP:Ce vials  Using YAP:Ce powder CO2 directly from combustion 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

19 Ultra low level liquid scintillation spectrometry
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

20 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
Anticoincidence W. Plastino, L. Kaihola, P. Bartolomei, F. Bella, Cosmic background reduction in the radiocarbon measurements by liquid scintillation spectrometry at the underground laboratory of Gran Sasso., Radiocarbon, 43 (2A), , 2001. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

21 Coincidence (factor 10^2)
x101 x103 W. Plastino, L. Kaihola, P. Bartolomei, F. Bella, Cosmic background reduction in the radiocarbon measurements by liquid scintillation spectrometry at the underground laboratory of Gran Sasso., Radiocarbon, 43 (2A), , 2001. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

22 Background comparison
W. Plastino, L. Kaihola, Surface and underground ultra low level liquid scintillation spectrometry, Radiocarbon, submitted. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

23 Radon groundwater monitoring at Gran Sasso National Laboratory
W. Plastino, F. Bella, Radon groundwater monitoring at underground laboratories of Gran Sasso (Italy), Geophysical Research Letters, 28 (14), , 2001. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

24 Present radon groundwater monitoring
overthrust fault 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

25 Gran Sasso geological cross section
W. Plastino, R. Di Giovambattista, P. G. Catalano, Groundwater chemical-physical anomalies related to seismic events in central Apennines (Italy), Journal of Geophysical Research, submitted. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

26 Gran Sasso hydrogeological cross section
W. Plastino, R. Di Giovambattista, P. G. Catalano, Groundwater chemical-physical anomalies related to seismic events in central Apennines (Italy), Journal of Geophysical Research, submitted. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

27 Direct Radon groundwater monitoring in situ
ERMES  Using YAP:Ce + PM + Elect.  Using YAP:Ce powder + PM + Electr. Detector: YAP:Ce crystal Photomultiplier High-Voltage Power Supply PMT YAP IN OUT HV ELE 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

28 Future radon groundwater monitoring
overthrust fault 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

29 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
Oceanography new devices development for nuclear spectrometry of environmental radioactivity for undersea station GEOSTAR (Geophysical and Oceanographic Station for Abyssal Research); Seawater samples analysis collected by GEOSTAR or oceanographic ships; Endogenous gas samples analysis. W. Plastino, M. Laubenstein, G. Etiope, P. Favali, Environmental radioactivity analysis in sea-water samples collected by GEOSTAR deep-sea observatory, Laboratori Nazionali del Gran Sasso – I.N.F.N., Annual report 2002, , 2003. G. Etiope, P. Favali, J.L. Fuda, F. Italiano, C. Millot, M. Laubenstein, W. Plastino, The Benthic Boundary Layer: geochemical and oceanographic data from the GEOSTAR-2 observatory, Annals of Geophysics, submitted. 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

30 Scientific Collaborations
National Institute of Geophysics and Volcanology ENEA – National Institute for Metrology of Ionizing Radiations 10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

31 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

32 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

33 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

34 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

35 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

36 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

37 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh

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