Low Radioactivity Techniques Workshop - LRT2013

Session

Session 6: Cosmogenic activation and low background techniques in experiments

6

11 Apr 2013, 11:20

E. Fermi auditorium (INFN - Laboratori Nazionali del Gran Sasso)

Conveners

Session 6: Cosmogenic activation and low background techniques in experiments

• Matthias Laubenstein (LNGS)

71. Cosmogenic activation

Dr SUSANA CEBRIAN (UNIVERSITY OF ZARAGOZA)

11/04/2013, 11:20

oral presentation

33. The COUPP detector and the acoustic alpha background discrimination technique.

Dr Manuel Bou-Cabo (UPV)

11/04/2013, 11:45

Cosmogenic activation and low background techniques in experiments

oral presentation

The nature of non‐baryonic dark matter (DM) is one of the most intriguing questions for particle physics at the start of the 21st century. The Chicagoland Observatory for Underground Particle Physics (COUPP) employs a CF3I bubble chamber to search for WIMP‐nucleus elastic scattering events. In this communication we show the plans, status and results of COUPP in the different bubble chamber...

9. Background suppression in the EDELWEISS-III experiment

Dr Xavier-François NAVICK (CEA de Saclay)

11/04/2013, 12:05

Cosmogenic activation and low background techniques in experiments

oral presentation

In dark matter WIMP searches the neutron shielding plays a crucial role in attenuating neutron flux and hence, suppressing nuclear recoil event rate - one of the key background mimicking WIMP interactions. The transition from EDELWEISS-II to EDELWEISS-III with 40 detectors with increased mass and improved background rejection has required the modification of the neutron shielding. In this...

8. Low-background tracker development for the SuperNEMO experiment

Mr James Mott (UCL)

11/04/2013, 12:25

Cosmogenic activation and low background techniques in experiments

oral presentation

The SuperNEMO experiment will search for 0νββ with a target half-life sensitivity of 10^26 years, corresponding to an effective neutrino mass of 50 - 100 meV. At its heart there is a low-background gaseous tracking detector which allows for extremely efficient background rejection and, if 0νββ is observed, may provide important insights into the mechanism via which it may be...

10. Background characterization for the GERDA experiment

Mrs Neslihan Becerici-Schmidt (MSc. Physics)

11/04/2013, 12:45

Cosmogenic activation and low background techniques in experiments

oral presentation

The GERDA experiment at LNGS searches for the neutrinoless double beta (0nubb) decay of Ge-76. HPGe detectors made from germanium enriched in Ge-76 are directly immersed in liquid argon, serving as shield against external radiation and as a cooling medium simultaneously. A significant reduction of the background compared to previous experiments is achieved in the first phase of the experiment....

44. The Ultra Pure Titanium for the low background experiments.

Dr Alexander Chepurnov (Moscow State University), Dr Yury Suvorov (Ucla & INFN - LNGS)

11/04/2013, 13:05

Cosmogenic activation and low background techniques in experiments

oral presentation

Due to the large mass of the cryostats, containment tanks, passive shielding, and other mechanical parts of the modern low background detectors, requirements on their radiopurity are typically stringent. In this regard, the material radiopurity has to be less then 1 mBq/kg of U238 / Th232, which means that mass concentration should be < 0.1 ppb for U and < 0.25 ppb for Th. Traditionally,...