Workshop on the Latest Developments of Photon Detectors

Ringberg Castle, Tegernsee
06 - 10 October 2014


LIGHT-14 is the 8th in a series of workshops on Photosensor Developments for High Energy and Astro-Particle Physics, previously held at DESY-Zeuthen (May 1998), Karlsruhe (March 1999), Paris (September 2000), San Francisco (October 2002), Kibbutz Eilot (January 2006), Ringberg, Germany (September 2007 and October 2011). These series of workshops are intimate encounters of a small number (40-60) of leading specialists from High Energy and Astro-Particle physics and selected industrial partners, discussing the very frontier developments on low-light-level (LLL) fast photon sensors and the future trends.

The main focus of the current workshop shall be the latest developments and trends in vacuum photo multiplier tubes (PMTs) as well as silicon-based matrixes of avalanche photo-diodes with common anode, operated in Geiger mode (known under the names of SiPM, AMPD, GMPD, MPPC, etc). In recent couple of years the super-bialkali PMTs show enhanced peak quantum efficiency (QE) values in the range of 40 %. Also a serious effort was made towards improving the Collection efficiency of photo-electrons onto the PMT 1st dynode to the level of 95-98 % as well as in reducing the after-pulsing down to 0.01 % level (≥ 4 photo electrons).

The developments on novel SiPM/GAPDs are rapidly progressing. New commercial products, applying novel solutions, become available. Together with improvement of the main parameters of SiPM one can observe interesting trends offering higher level of flexibility for integrating matrixes and for providing elements for controlling and reading out the signals.

In many low light level (LLL) applications and in a number of High Energy and Astro-Particle Physics experiments prototype solutions are under study for substituting classical PMTs with SiPMs. Also in medical instrumentation SiPM can offer valuable advantages, as for example, the unmatched neither by APD not by PMT time and amplitude resolution.

We are also interested in the latest trends in imaging sensors, mostly focusing on the optical range and in organic photo detectors.
The workshop can accommodate a maximum of 60 invited participants.