Welcome to the LCTPC Japan Home Page

The LCTPC Japan group is developing a Micro-Pattern-Gas-Detector (MPGD) readout TPC for the future linear collider in the "LCTPC" collaboration, which has an Asian subset "LCTPC Asia".

Our Activities

Our R&D program covers the design, prototyping, and construction of a large prototype TPC for linear collider experiments as well as basic studies using a small prototype TPC to help better understand fundamental processes in the TPC. Our current focus is on R&D of GEM (Gas Electron Multiplier) modules.

• GEM modules
• Readout electronics (S-ALTRO)
• 2-Phase CO2 cooling
• Positive Ion studies (primay and backdrift)
• Positive ion gating
• Tracking software for non-uniform magnetic field
• Gas studies
• Beam tests
• Laser test bench

Members (to be updated)

    Iwate Univ., group leader: Shinya    Narita
    KEK, group leader: Keisuke  Fujii
    Kogakuin Univ., group leader: Takashi  Watanabe
    Kindai Univ., group leader: Yukihiro Kato
    Hiroshima Univ., group leader: Tohru    Takahashi
    Saga Univ., group leader: Akira    Sugiyama
    MPI, group leader: Ronald Dean Settles
    IHEP,  group leader:   Huirong Qi 

Library

Lectures / Notes

• "Basic Physics behand Operation of TPC" by K.Fujii (lecture given originally at TPC School on Jan. 7-11, 2008 in Beijing):
  • Part I: Fundamental Processes in TPC - Ionization, Electron Transport, Gas Amplification, Signal Generation - (pdf: 51MB)
  • Part II: Application to MPGD Readout TPC - Coordinate Measurements (revised on Jan. 11, 2016) (pdf: 13MB)
• Effects of Ionization Statistics and Gas Gain Fluctuation on Charge Centroid (Notes by K.Fujii on Ryo's thesis work) (pdf: 160kB)

Talks

• "Time Stamping - CDC/TPC Comparison Studies -", LC-TPC TPC R&D Meeting (pdf: 11.3MB) by K.Fujii
• "Towards the Final Design of a TPC for the ILD Detector", TYL/FKPPL Meeting, June, 2013, Seoul (ppt: 27MB, pdf: 3.7MB ) by K.Fujii

Publications

Gallery

• 2013/02/18-22  Analysis Week at Saclay