Summary:
The SuperKEKB e+e- circular collider is a Super B-factory designed to reach the highest ever achieved instantaneous luminosity of 8×10^35 /cm^2 /s^1. SuperKEKB intense beams are expected to produce a very high level of background particles, increasing the detector occupancy and the radiation level, with major impact on the 2 innermost layers of the vertex detector. The present project is about defining a contribution to the characterisation of the SuperKEKB induced background within the Belle II inner tracker volume, using CMOS pixel sensors developed by the PICSEL group. This background study will be performed during the Belle II experiment commissioning (BEAST) scheduled from end of 2015 to end of 2016.

French members :
I. Ripp-Baudot, J. Baudot, A. Besson, M. Winter

Japanese members :
Y. Ushiroda, H. Nakayama, S. Tanaka

References:
- A.Nomerotski et al., "PLUME collaboration : Ultra-light ladders for linear collider vertex detector", Nucl.Instr.Meth. A650 (2011) 208-212.
- J. Baudot, talk given at the June 2014 ECFA Detector Panel Review Open Session: "Development of ultra-light pixelated devices based on CPS". https://indico.desy.de/materialDisplay.py?contribId=2&materialId=slides&confId=10026

website:
- The Belle II experiment: http://belle2.kek.jp/
- The PLUME project: http://www.iphc.cnrs.fr/PICSEL.html
- The PICSEL group: http://www.iphc.cnrs.fr/PLUME.html

Summary

French member :
M-H. Schune
B. Blossier
E. Kou
F. Le Diberder
F. Polci
R. Poeschl

Japanese member :
K. Hara
T. Goto
S. Hashimoto
T. Higuchi
R. Itoh
K. Trabelsi

References

website