Dr. Katsumasa Ikematsu Fellow working on TPC R&D for the ILC Detector. DESY Deutsches Elektronen-Synchrotron Hamburg Notkestr. 85 D-22607 Hamburg Tel.: (+49) 40 - 8998 3426 Fax.:(+49) 40 - 8998 1812 Office: building 1d, room 22 Email:Katsumasa.Ikematsu@desy.de