Speakers
Mr
Christophe Hugon
(CPPM - IN2P3)Ms
Fang Xie
(University College London)
Description
SuperNEMO is a tracker-calorimeter neutrinoless double beta decay
experiment using $^{82}$Se to reach a sensitivity of T$_{1/2} >
10^{26}$~y, and the effective neutrino mass of $\langle
m_{\beta\beta}\rangle<40-100$~meV. The construction of the first
Demonstrator Module at the LSM is under completion, with the aim to
reach 0 background in the ROI of the $0\nu\beta\beta$ decay. This target
placed challenging demands on the radiopurity of detector components,
and particularly the $^{222}$Rn activity within the tracker. A ``Radon
Concentration Line'' was developed and operated in conjunction with a
electrostatic detector to measure $^{222}$Rn content in gas to a few
$\mu$Bq/m$^3$. Measurements of an instrumented tracker have confirmed
that the target of $0.15$ mBq/m$^3$ of radon has been met. In addition,
studies of radon emanation in the presence of tracking gas quenchers,
have been carried out.
The poster will present the design of radon emanation facilities and
measurement results.
| Authorship annotation | on behalf of the SuperNEMO collaboration |
|---|---|
| Session and Location | Monday Session, Poster Wall #63 (Auditorium Gallery Right) |
| Poster included in proceedings: | yes |
Primary authors
Mr
Christophe Hugon
(CPPM - IN2P3)
Ms
Fang Xie
(University College London)
