Coordinatori
Session 3 - Low background counting techniques
- Richard Ford (SNOLAB)
Session 3 - Low background counting techniques
- Richard Ford (SNOLAB)
Dr.
SUSANA CEBRIAN
(UNIVERSITY OF ZARAGOZA)
10/04/13, 12:10
Low background counting techniques
oral presentation
An extensive screening and material selection process is underway in the construction of the “Neutrino Experiment with a Xenon TPC” (NEXT), intended to investigate neutrinoless double beta decay using a high-pressure xenon gas TPC filled with 100 kg of Xe enriched in 136Xe. Determination of the radiopurity levels of the materials is based on gamma-ray spectroscopy using ultra-low background...
Dr.
Robert Nelson
(Caltech)
10/04/13, 12:30
Low background counting techniques
oral presentation
The BetaCage is a proposed neon time-projection chamber for the ultra-sensitive screening of materials for alpha- and beta-emitting surface contaminants. The BetaCage is of interest to rare-event-search experiments (e.g. dark matter searches and neutrino less double-beta decay) where surface contaminations from the implantation of the products from radon decays are a substantial background. ...
Dr.
Francisco Jose Iguaz Gutierrez
(University of Zaragoza)
10/04/13, 12:50
Low background counting techniques
oral presentation
The observation of the neutrinoless double beta decay may provide essential information on the nature of neutrinos. Among the current experimental approaches, a high pressure gaseous TPC is an attractive option for the search of double beta decay due to its good energy resolution and the detailed topological information of each event. We present in this talk a detailed study of the ionization...
Werner Maneschg
(Max Planck Institut fuer Kernphysik)
10/04/13, 13:10
Low background counting techniques
oral presentation
The low background GERmanium Detector Array (GERDA) at Laboratori Nazionali del Gran Sasso is designed to search for the rare neutrino-less double beta decay (0vbb) in 76Ge. Bare germanium diodes are operated in liquid argon that is used as coolant, as passive and soon active as well shield against external radiation. Currently, Phase I of the experiment is running using ~15 kg of co-axial...
Eric Hoppe
(Pacific Northwest National Laboratories)
10/04/13, 15:00
Low background counting techniques
oral presentation
An increasing number of physics experiments require low background materials for their construction. The presence of Uranium and Thorium and their progeny in these materials present a variety of unwanted background sources for these experiments. The sensitivity of the experiments continues to drive the necessary levels of detection ever lower as well. This requirement for greater...
Stefano Nisi
(INFN - LNGS)
10/04/13, 15:20
Screening facilities and low background detectors
oral presentation
The assembly of physics experiments searching for rare events involves the selection
of highly radio-pure materials. The possibility to measure natural radioactivity
(potassium, thorium and uranium) in a wide range of materials and with the best
available sensitivity is of basic importance in this field of research. Inductively
coupled plasma mass spectrometry (ICP MS) allows the direct...
Andreas Zimbal
(Physikalisch-Technische Bundesanstalt (PTB))
10/04/13, 15:40
Low background counting techniques
oral presentation
We report on low-level measuring techniques for neutrons that have been developed at the Physikalisch-Technische Bundesanstalt (PTB), the German National Metrology Institute. PTB operates well characterized neutron reference fields which are available for experiments and calibration activities and is involved in the development of new detectors and measurement techniques for neutron...
