the laboratory for low-level radioactivity measurements @ lngs matthias laubenstein
DESCRIPTION
THE LABORATORY FOR LOW-LEVEL RADIOACTIVITY MEASUREMENTS @ LNGS Matthias Laubenstein I.N.F.N. - L.N.G.S. Location (present and future). Present : 32 m 2 on one floor in service tunnel Future : 60 m 2 distributed on three floors in hall A. 511 keV. 40 K. 208 Tl. 60 Co. HPGe detectors. - PowerPoint PPT PresentationTRANSCRIPT
THE LABORATORY FOR THE LABORATORY FOR LOW-LEVEL LOW-LEVEL
RADIOACTIVITY RADIOACTIVITY MEASUREMENTS @ LNGSMEASUREMENTS @ LNGS
Matthias LaubensteinMatthias LaubensteinI.N.F.N. - L.N.G.S.I.N.F.N. - L.N.G.S.
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
2
Location (present and future)Location (present and future)
PresentPresent: : 32 m32 m22 on one floor in service tunnel on one floor in service tunnel
FutureFuture: : 60 m60 m22 distributed on three floors in hall A distributed on three floors in hall A
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
3
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
4
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
5
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
6
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
7
1,E-04
1,E-03
1,E-02
1,E-01
1,E+00
1,E+01
1,E+02
1,E+03
0 500 1000 1500 2000 2500 3000
Energy [keV]
Nor
mal
ised
coun
ting
rate
[cou
nts d
-1 k
eV-1
kg
Ge
-1]
above ground
LNGS
511 keV40K 208Tl
60Co
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
8
HPGe detectorsdetector total and peak background count rate [d-1 kg-1
Ge]
40-2700 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 2.1 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
University ofIceland
IAEA-MEL
ARCS
LNGS
IRMM
LSCE
VKTA
MPI-K
PTB
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
11
10-1
100
101
102
103
104
105
106N
orm
alis
ed c
oun
tin
g ra
te [
d-1 k
g-1]
10-2
Depth [m w.e.]
0 3000
1000
2000
4000
5000
Mu
on f
luen
ce r
ate
[a.u
.]
LSCE
LNGS
PTB
JRC-IRMM
VKTA Rossendorf
above ground
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
12
10-1
100
101
102
103
104
105
106N
orm
alis
ed c
oun
tin
g ra
te [
d-1 k
g-1]
10-2
Depth [m w.e.]
0 3000
1000
2000
4000
5000
Mu
on f
luen
ce r
ate
[a.u
.]
199319961997
LNGS
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
13
Background characterisationBackground characterisation
• gamma spectrometrygamma spectrometry
• directional photon flux in hall Adirectional photon flux in hall A(with portable HPGe detector and MCA)(with portable HPGe detector and MCA)
• method rather fast and simplemethod rather fast and simple
(LN(LN22-free cooling, simple setup)-free cooling, simple setup)
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
14
First results of photon First results of photon background characterisation in background characterisation in
hall A hall A (by courtesy of O. Chkvorets)(by courtesy of O. Chkvorets)
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
15
First results of photon First results of photon background characterisation in background characterisation in
hall A hall A (by courtesy of O. Chkvorets)(by courtesy of O. Chkvorets)
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
16
First results of photon First results of photon background characterisation in background characterisation in
hall A hall A (by courtesy of O. Chkvorets)(by courtesy of O. Chkvorets)
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
17
Further scientific topicsFurther scientific topics
• Radiocarbon and tritium Radiocarbon and tritium measurements measurements (Radiodating Laboratory)(Radiodating Laboratory)
• Radon groundwater monitoringRadon groundwater monitoring(Environmental and geophysical monitoring of (Environmental and geophysical monitoring of the Gran Sasso aquifer)the Gran Sasso aquifer)
• Development and characterization Development and characterization of new detectorsof new detectors (for nuclear spectrometry of environmental(for nuclear spectrometry of environmental radioactivity)radioactivity)
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
18
Radiocarbon measurementsRadiocarbon measurements
ERMESERMES
Ultra low-level liquid scintillation spectroscopyUltra low-level liquid scintillation spectroscopy
Using YAP:Ce vialsUsing YAP:Ce vials
Using YAP:Ce powderUsing YAP:Ce powder
COCO22 directly from combustion directly from combustion
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
19
Ultra low level liquid scintillation Ultra low level liquid scintillation spectrometryspectrometry
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
20
AnticoincidenceAnticoincidence
W. Plastino, L. Kaihola, P. Bartolomei, F. Bella, W. Plastino, L. Kaihola, P. Bartolomei, F. Bella, Cosmic background reduction in the Cosmic background reduction in the radiocarbon measurements by radiocarbon measurements by liquid scintillation spectrometry at the liquid scintillation spectrometry at the underground laboratory of Gran Sasso., underground laboratory of Gran Sasso., Radiocarbon, 43 (2A), 157-Radiocarbon, 43 (2A), 157-161, 2001.161, 2001.
0
1
2
3
4
5
1 101 201 301 401 501 601 701 801 901 1001
Channel
CP
M/C
h
a)
0
1
2
3
4
5
1 101 201 301 401 501 601 701 801 901 1001
Channel
CP
M/C
h
b)
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
21
Coincidence (factor 10^2)Coincidence (factor 10^2)
0
1
2
1 101 201 301 401 501 601 701 801 901 1001
Channel
CP
M/C
h
a)
0
1
2
1 101 201 301 401 501 601 701 801 901 1001
Channel
CP
M/C
h
b)
W. Plastino, L. Kaihola, P. Bartolomei, F. Bella, W. Plastino, L. Kaihola, P. Bartolomei, F. Bella, Cosmic background reduction in the Cosmic background reduction in the radiocarbon measurements by radiocarbon measurements by liquid scintillation spectrometry at the liquid scintillation spectrometry at the underground laboratory of Gran Sasso., underground laboratory of Gran Sasso., Radiocarbon, 43 (2A), 157-Radiocarbon, 43 (2A), 157-161, 2001.161, 2001.
x101
x103
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
22
Background comparisonBackground comparisonVial background in 14C window
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 2 4 6 8
volume mL
CP
M Gran Sasso
Other surface labs
W. Plastino, L. Kaihola, W. Plastino, L. Kaihola, Surface and underground ultra low level liquid scintillation Surface and underground ultra low level liquid scintillation spectrometry, spectrometry, Radiocarbon, Radiocarbon, submitted.submitted.
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
23
Radon groundwater monitoring Radon groundwater monitoring at Gran Sasso National at Gran Sasso National
LaboratoryLaboratory
W. Plastino, F. Bella, W. Plastino, F. Bella, Radon groundwater monitoring at underground laboratories of Gran Sasso Radon groundwater monitoring at underground laboratories of Gran Sasso (Italy),(Italy), Geophysical Research Letters, 28 (14), 2675-2678, 2001.Geophysical Research Letters, 28 (14), 2675-2678, 2001.
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
24
overthrust fault
Present radon groundwater Present radon groundwater monitoringmonitoring
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
27
Direct Radon groundwater monitoringDirect Radon groundwater monitoringin situin situ
ERMESERMES
Using YAP:Ce + PM + Elect.Using YAP:Ce + PM + Elect.
Using YAP:Ce powder +Using YAP:Ce powder +
PM + Electr.PM + Electr.
Detector: YAP:Ce crystalDetector: YAP:Ce crystal PhotomultiplierPhotomultiplier High-Voltage Power SupplyHigh-Voltage Power Supply
PMT
YAP
IN
OUT
HV ELE
IN OUT
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
28
Future radon groundwater Future radon groundwater monitoringmonitoring
overthrust fault
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
29
OceanographyOceanography
- new devices development for nuclear spectrometry of new devices development for nuclear spectrometry of environmental radioactivityenvironmental radioactivity for undersea station for undersea station GEOSTAR (Geophysical and Oceanographic Station for GEOSTAR (Geophysical and Oceanographic Station for Abyssal Research);Abyssal Research);
- Seawater samples analysis collected by GEOSTAR or Seawater samples analysis collected by GEOSTAR or oceanographic ships;oceanographic ships;
- Endogenous gas samples analysis.Endogenous gas samples analysis.
W. Plastino, M. Laubenstein, G. Etiope, P. Favali, W. Plastino, M. Laubenstein, G. Etiope, P. Favali, Environmental radioactivity analysis in sea-water samples collected by Environmental radioactivity analysis in sea-water samples collected by GEOSTAR deep-sea observatory,GEOSTAR deep-sea observatory, Laboratori Nazionali del Gran Sasso – I.N.F.N., Annual report 2002, 201-206, 2003. Laboratori Nazionali del Gran Sasso – I.N.F.N., Annual report 2002, 201-206, 2003.
G. Etiope, P. Favali, J.L. Fuda, F. Italiano, C. Millot, M. Laubenstein, W. Plastino, G. Etiope, P. Favali, J.L. Fuda, F. Italiano, C. Millot, M. Laubenstein, W. Plastino, The Benthic Boundary Layer: geochemical The Benthic Boundary Layer: geochemical and oceanographic data from the GEOSTAR-2 observatoryand oceanographic data from the GEOSTAR-2 observatory, Annals of Geophysics, submitted., Annals of Geophysics, submitted.
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
31
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
32
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
33
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
34
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
35
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
36
10-SEP-2004 1st Meeting, ILIAS JRA1/LBT-DUSL, Edinburgh
37