Apr 22 – 24, 2008
Palais Neptune Conference Center, Toulon
Europe/Paris timezone

Crystal-based hybrid single photon detector development for the KM3NeT cubic kilometre neutrino telescope

Apr 23, 2008, 11:00 AM
Salle Raimu-B (Palais Neptune Conference Center, Toulon)

Salle Raimu-B

Palais Neptune Conference Center, Toulon

Palais des Congrès Neptune Place de Besagne Centre Commercial Mayol
Contributed talk Parallel Session on Photodetection Parallel session on Photodetection


G Hallewell (Centre de Physique des Particules de Marseille)


Scintillating crystal-based hybrid photon detectors have been demonstrated as viable single photon detectors since 1996 in the Lake Baikal neutrino telescope. Prior to this, the Philips XP2600 'SMART' X-HPD had been developed under the DUMAND program, while more recently, developments at CERN have demonstrated the advantages of a true concentric geometry with a scintillator at the geometric centre of a spherical photocathode, giving almost 100% electrostatic collection efficiency over a ~ 3*pi solid angle coverage. Under a collaboration within the Groupement d'Intêret Scientifique cooperation signed between Photonis S.A. and the IN2P3 (Institut National de Physique Nucléaire et de Physique des Particules) division of the CNRS, a series of quasi-spherical X-HPDs will be developed with sizes ranging between 8" and the maximum that can be constructed for fitting in a standard 17" optical pressure sphere for use in a deep sea neutrino telescope. The thrust of this R&D will be to investigate the industrialisation of the X-HPD to the point where it represents a significant cost reduction per cubic kilometre of instrumented volume compared to conventional PMTs, thereby allowing for extremely large telescope target volumes. Such gains will arise from industrialisation of an all-glass envelope construction, the internal deposition of enhanced efficiency bi-alkali photocathodes, and either from cost reductions in the central scintillating crystal or the use of a deposited phosphor.

Primary author

G Hallewell (Centre de Physique des Particules de Marseille)


A-G Dehainne (Photonis SA) B Combettes (Photonis SA) B K Lubsandorzhiev (Institute of Nuclear Research, Russian Academy of Sciences) F Fouche (Photonis SA) I al Samari (Centre de Physique des Particules de Marseille) J Busto (Centre de Physique des Particules de Marseille)

Presentation materials