Speaker
Dr
Ali DASTGHEIBI FARD
(CNRS/IN2P3/LSM)
Description
The Spherical gaseous detector (or Spherical Proportional Counter, SPC) is a novel type of detector. It consists of a large spherical volume filled with gas, using a single detection readout channel. The detector allows ≈100% detection efficiency. SEDINE is a low backg round version of SPC (made of Cu_NOSV) installed at the LSM underground laboratory (4800 m.w.e) looking for rare events at very low energy threshold, below 100 eV. I will present details on the chemical cleaning to reduce internal Pb-210 surface contamination on the copper vessel and the external radon decreasing via circulation of pure air below anti-radon tent. I will also show the radon measurement of pure gases (Ar, N, Ne, etc) which are used in the underground laboratory for the low background experiments.
Primary author
Dr
Ali DASTGHEIBI FARD
(CNRS/IN2P3/LSM)
Co-authors
Dr
Fabrice PIQUEMAL
(LSM & CENBG)
Dr
Pia LOAIZA
(LSM)
