Progress on development of the new FDIRC PID detector

International audienceWe present a progress status of a new concept of PID detector called FDIRC, intended to be used at the SuperB experiment, which requires π/K separation up to a few GeV/c. The new photon camera is made of the solid fused-silica optics with a volume 25× smaller and speed increased by a factor of 10 compared to the BaBar DIRC, and therefore will be much less sensitive to electromagnetic and neutron background

Characterisation of the fused silica surface quality with a β\beta-source

International audienceA method to characterise the quality of a fused silica surface using a $\beta$-source is presented. Two fused silica bars ($5 \times 10 \times 400$ mm$^3$) were fabricated for the Cherenkov detector for proton Flux Measurement installed at vacuum chamber of the Super Proton Synchrotron at CERN. The resolution of such device is defined by the collection efficiency of the Cherenkov light, which is produced by relativistic charged particles in the fused silica. Thus, the surface quality of the radiator should be as good as possible to avoid light losses. The method is based on the scanning of the radiator surface with a $^{90}$Sr radioactive source and measurements of the Cherenkov light rate, detected by a PMT attached to the quartz bars. The data have been compared with a Monte-Carlo simulation, providing an estimation of the radiator’s probability of the total internal reflection and inefficient area at the edges of the bars

Characterization of the quartz surface quality with β\beta-source

International audienceWe present a method for characterizing the quality of the Cherenkov quartz radiator. It is based on the scanning with $^{90}$Sr radioactive source (standard deviation is 1.17 mm) of the radiator surface and measurements of the Cherenkov light rate and amplitude, detected by the PMT attached to the quartz bars. This experimental data have been compared with a Monte-Carlo simulation which repeats the same experimental configuration. This method gives an upper estimate of the radiator parameters which are related to two different quantities: (1) probability of the total internal reflection; (2) ineffective area in the corner of the quartz bar

Study of H-8500 MaPMT for the FDIRC detector at superB

International audienceAn overview of ongoing studies on the Hamamatsu H-8500 Multi-Anode Photomultiplier (MaPMT) is presented. This device will be used for the FDIRC Particle Identification Detector (PID) of the SuperB experiment. The H-8500 MaPMT has been chosen for its excellent single photon timing capabilities and its highly pixilated design. Results on timing studies, gain uniformity, single photoelectron detection efficiency uniformity and cross-talk are presented

A particle identification detector for the forward region of the SuperB experiment

International audienceThe DIRC-like time-of-flight detector (FTOF) is a ring imaging Cherenkov counter designed to improve the charged particle identification on the forward side of SuperB. Here we review the main characteristics of this device, summarize the results of a prototype test done last year in the SLAC Cosmic Ray Telescope and present the future steps needed to build the FTOF

A particle identification detector for the forward region of the SuperB experiment

The DIRC-like time-of-flight detector (FTOF) is a ring imaging Cherenkov counter designed to improve the charged particle identification on the forward side of SuperB. Here we review the main characteristics of this device, summarize the results of a prototype test done last year in the SLAC Cosmic Ray Telescope and present the future steps needed to build the FTOF. (C) 2012 Elsevier B.V. All rights reserved

Front-end electronics for the SuperB charged particle identification detectors

International audienceAn overview of the electronics chains for the two charged particle identification (PID) detectors of the SuperB experiment is presented. The PID group is designing different detectors for the barrel (FDIRC) and forward (FTOF) regions. Both are based on time measurements, respectively in the 100 ps and 10 ps rms resolution domains

Front-end electronics for the SuperB charged particle identification detectors

An overview of the electronics chains for the two charged particle identification (PID) detectors of the SuperB experiment is presented. The PID group is designing different detectors for the barrel (FDIRC) and forward (FTOF) regions. Both are based on time measurements, respectively in the 100 ps and 10 ps rms resolution domains. (C) 2012 Elsevier B.V. All rights reserved

A particle identification detector for the forward region of the SuperBexperiment

The DIRC-like time-of-flight detector (FTOF) is a ring imaging Cherenkov counter designed to improve the charged particle identification on the forward side of SuperB. Here we review the main characteristics of this device, summarize the results of a prototype test done last year in the SLAC Cosmic Ray Telescope and present the future steps needed to build the FTOF