29 July 2018 to 4 August 2018
Russian Academy of Sciences
Europe/Moscow timezone

Front end electronics of the Belle II Aerogel Ring Imaging detector

31 Jul 2018, 10:55
Blue Hall (Russian Academy of Sciences)

Blue Hall

Russian Academy of Sciences

Leninsky Prospekt, 32а Moscow 119071 Russian Federation
Board: 17
poster presentation Technological aspects and applications of Cherenkov detectors Poster Session


Rok Pestotnik (Jožef Stefan Institute)


In the forward end-cap of the Belle II spectrometer, the proximity focusing RICH with aerogel radiator will be used for charged particle identification. The detector, consisting of 4~cm aerogel radiator, 16~cm expansion volume and a photon detector plane with 420 Hybrid Avalanche Photo Detectors is mounted in a very confined space between central drift chamber and electromagnetic calorimeter, leaving only 5~cm space for the readout electronics. A low power front end read-out board is mounted at the back side of each of the photosensor. The digitized signals from up to six front-end boards are collected by merger boards mounted approximately 4~cm above the front end boards. In between the 30~m long service, cables are installed, connecting the sensors end boards with power supplies and common readout electronics outside of spectrometer.

Prior to installation, the sensor components have been tested on the bench. The detector was installed in 2016 and 2017 by carefully routing the cables through the available space and finally mounted in the Belle II spectrometer. During the commissioning phase, parts of the detector were tested and connected to the power supplies.
In the presentation, the electronics of the Belle II aerogel RICH will be reviewed. We will focus on the first experience, low voltage power supply control system, calibration and the temperature control of the detector.

Primary author

Rok Pestotnik (Jožef Stefan Institute)


Ichiro Adachi (High Energy Accelerator Research Organization (KEK), Graduate University of Advanced Science (SOKENDAI)) Dr Leconid Burmistrov (Laboratoire de Laccelerateur Lineaire) Francois Le Diberder (Laboratoire de Laccelerateur Lineaire (LAL)) Dr Rok Dolenec (University of Ljubljana) Mr Koki Hataya (Tokyo Metropolitan University) Ms Shiori Kakimoto (Tokyo Metropolitan University) Hidekazu Kakuno (Tokyo Metropolitan University) Hideyuki Kawai (Chiba University) Takeo Kawasaki (Kitasato University) Haruki Kindo (Graduate University of Advanced Science (SOKENDAI)) Tomoyuki Konno (Kitasato University) Samo Korpar (University of Maribor and JSI) Peter Krizan (University of Ljubljana, Jozef Stefan Institute) Tetsuro Kumita (Tokyo Metropolitan University) Yun-Tsung Lai (High Energy Accelerator Research Organization (KEK)) Mr Masahiro Machida (Tokyo University of Science) Manca Mrvar (Jozef Stefan Institute) Kouta Noguchi (Tokyo Metropolitan University) Shohei Nishida (High Energy Accelerator Research Organization (KEK), Graduate University of Advanced Science (SOKENDAI)) Mr Kazuya Ogawa (Niigata University) Satoru Ogawa (Toho University) Luka Santelj (Hubert Curien Multi-disciplinary Institute (IPHC)) Takayuki Sumiyoshi (Tokyo Metropolitan University) Makoto Tabata (Chiba University) sachi tamechika Masanobu Yonenaga (Tokyo Metropolitan University) Yosuke Yusa (Niigata University) Mr Morihito Yoshizawa (Niigata University)

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