May 15 – 20, 2016
EXCO in Daegu, Republic of Korea
Asia/Seoul timezone

A fast timing calorimetric layer using micro-channel plates in ionisation mode

May 17, 2016, 5:00 PM
EXCO in Daegu, Republic of Korea

EXCO in Daegu, Republic of Korea


Vincenzo Ciriolo (Universita & INFN, Milano-Bicocca (IT))


At the HL-LHC, more than 140 concurrent pp interactions, will deteriotate the energy resolution and identificatification capabilities of calorimeters. The possibility to distinguish neutral particles coming from different interaction vertices is being pursued as a tool to reduce pile-up contamination in calorimeters, and restore optimal performance. A time of flight resolution of the order of 30ps will be able to reduce pile-up contamination of about one order of magntitude. Micro-channel plates can be used in PMT configuration as fast charged particles detector (resolution of better then 30ps can be achieved), but are not particularly radiation tolerant due to ion feedback on the photocathode. The possibility of using micro-channel plates without a photocatode (i-MCP) has been studied in test beams. Different MCP geometries are compared with the goal to identify the optimal configuration. Efficiency of more then 70% with a time resolution of better then 40ps are achieved for single charged particles, leading to an efficiency close to 100% for EM shower after few radiation lenghts. This open the possibility to use i-MCPs as a timing layer in a sampling calorimeter or to use it in a pre-shower device independent from the calorimeter technology. Preliminary results on the radiation hardness of the i-MCP configuration will be also presented.

Primary author

Vincenzo Ciriolo (Universita & INFN, Milano-Bicocca (IT))


Alessio Ghezzi (Universita & INFN, Milano-Bicocca (IT)) Dr Alexander Barnyakov (Bunker Institute of Nuclear Physics) Arabella Martelli (CERN) Badder Marzocchi (Universita & INFN, Milano-Bicocca (IT)) Chiara Ilaria Rovelli (Universita e INFN, Roma I (IT)) Claudio Gotti (Universita & INFN, Milano-Bicocca (IT)) Daniele Del Re (Universita e INFN, Roma I (IT)) Francesca Cavallari (Universita e INFN, Roma I (IT)) Francesco Santanastasio (Universita e INFN, Roma I (IT)) Giovanni Organtini (Universita e INFN, Roma I (IT)) Luca Brianza (Universita & INFN, Milano-Bicocca (IT)) Mikhail Barnyakov (Budker Institute of Nuclear Physics) Paolo Meridiani (Universita e INFN, Roma I (IT)) Riccardo Paramatti (INFN - Rome I) Shahram Rahatlou (Universita e INFN, Roma I (IT)) Simone Gelli (Universita e INFN, Roma I (IT)) Simone Pigazzini (Universita & INFN, Milano-Bicocca (IT)) Tommaso Tabarelli de Fatis (Universita & INFN, Milano-Bicocca (IT))

Presentation materials