Summary:
The D_RD_02 project allowed a ‘proof of principle’ of MPGDs (Micromegas and GEMs) for the electron amplification and readout of a TPC for the Linear Collider. The resolution of such an apparatus was understood and shown to be adequate, and the operation in a beam was demonstrated. Since 2013, a new project was started, as a preparatory step toward the construction of a TPC for the ILD experiment. Integration aspects are now fully addressed: cooling, distortion mitigation and correction, electronics design, gating and other issues, as well as the definition of criteria for the technology choice.
The D_RD_02 allowed a ‘proof of principle’ that MPGDs (Micromegas and GEMs) are adequate for electron amplification and readout of a TPC for the Linear Collider. The resolution of such an apparatus was understood and shown to fulfill the requirement, and the operation in a beam was demonstrated. Since 2013, a new project was started, as a preparatory step toward the construction of a TPC for the ILD experiment. Integration aspects are now fully addressed: cooling, distortion mitigation and correction, electronics design, gating and other issues, as well as the definition of criteria for the technology choice.

French members :
P. Colas, D. Attié, D. Bhattacharya, S. Ganjour, A. Giganon, I. Giomataris

Japanese members :
K. Fujii, T. Fusayasu, K. Ikematsu, K. Kato, M. Kobayashi, T. Matsuda, O. Nitoh, T. Ogawa, A. Sugiyama, T. Takahashi, T. Watanabe

References:
[1] W. Wang, ‘A Large Micromegas TPC for the ILC’, Thesis, Université Paris Sud (June 2013) http://irfu.cea.fr/Phocea/file.php?class=std&file=Doc/Publications/Archives/irfu-13-03-T.pdf
[2] R. Yonamine, K. Fujii, K. Ikematsu, A. Ishikawa, T. Fusayasu, P. Gros, Y. Kato and S. Kawada et al., “Spatial resolutions of GEM TPC.A novel theoretical formula and its comparison to latest beam test data”, JINST 9, C03002 (2014)
[3] P. Gros, K. Fujii, T. Fusayasu, Y. Kato, S. Kawada, M. Kobayashi, T. Matsuda and O. Nitoh et al., “Blocking positive ion backflow using a GEM gate: experiment and simulations,” JINST 8, C11023 (2013)

websites:
http://irfu.cea.fr/ILC-TPC/
http://www-jlc.kek.jp/jlc/en/subg/tpc
http://www-hep.phys.saga-u.ac.jp/ILC-TPC/

Summary :
This is a proposal to start a new series of R&D on liquid xenon as detectors of the gamma ray applied to PET (Positron Emission Tomography) technology by the SUBATECH Laboratory (http://www-subatech.in2p3.fr/en/research/nuclear-and-health/xenon/about), Ecole des Mines de Nantes, and KEK (http://rd.kek.jp/project/LXe/index_e.html). Recently SUBATECH group has established a technology to measure a small ionization signal in liquid xenon by using a dedicated electronics coupled to readout pads though ceramic feedthough connectors. In parallel in Japan new photo sensors for the use in liquid xenon temperature to measure its scintillation light are being developed with finer segmentations; Avalance Photo diode (APD), SiPM, and multi-anode photomultipliers. These new technologies are supported by developments made in a series of R&D ever performed by the SUBATCH-KEK collaboration. The proposal is addressing concrete tests on prototypes located both at KEK and Suabtech; they will focus on the understanding of liquid xenon properties for medical imaging. In parallel, the groups will prepare the next experiment XEMIS2 which will be installed in 2015 at the Nantes hospital to image small animals

French members :
D. Thers, N. Beaupere, J-P. Cussonneau, J. Masbou, E. Morteau, L. Scotto-Lavina

Japanese members :
S. Mihara, K. Kasami, S. Tanaka, T. Tauchi, T. Saeki

References:

websites:

Summary :

French members :
C. de la Taille, S. Callier

Japanese members :
Y. Arai, C. Cassidy, I. Kurachi, T. Miyoshi, I. Nakamura, T. Nakaya, W. Otani, T. Takeshita

References:

websites:

Summary :

French members :
A. Lounis, C. Nellist, P. Petroff, R. Tanaka

Japanese members :
K. Hara, Y. Ikegami, K. Nakamura, H. Okawa, Y. Unno

References:

websites: