<<<<<<<<<<<<<< CRC News 2017年 1月 12日 >>>>>>>>>>>>>> CRC会員 各位               CRC事務局 ***<KEK測定器開発室セミナーのご案内(2017.1.19) "Technological horizons of sub-100ps timing with gaseous detectors">*** 関連分野の皆様 (重複して受け取った場合はお許しください。) KEK測定器開発室では高エネルギー・原子核およびその関連分野の測定器技術・ 応用に関する知見を深めるため、不定期でセミナーを開催しております。 今回のセミナーでは、Dr. Diego Gonzalez-Diaz (CERN)をお招きして、 "Technological horizons of sub-100ps timing with gaseous detectors" と題して 講演をしてしていただきます。 何卒多数ご参集いただきますよう、よろしくお願いいたします。 TV会議システム等での中継も可能です。 ご希望の方は下記担当者までお問い合わせください。                     KEK測定器開発室 ====================================================================== KEK DTP Seminar "Technological horizons of sub-100ps timing with gaseous detectors" Dr. Diego Gonzalez-Diaz (CERN) Date & Time: 2017/1/19 15:00~ Place: KEK 4 go-kan, 345 Abstract: Achieving an accurate time response through gaseous media is unavoidably linked to the use of high fields and small gas gaps. But... what are the technological implications of these facts?: high fields entail resistive protection whereas small gaps enforce operation either at high pressure, in multi-gap configuration or with auxiliary solid converters so as to maintain an efficient detector response. These requirements would seemingly confine gaseous timing detectors to operation under relatively low particle fluxes (to avoid charging up) as well as relatively small sizes (to keep the good timing characteristics). In year 2000, 'multi-gap timing resistive plate chambers' (MtRPCs) were introduced and have been universally adopted since. MtRPCs are regularly used or studied in experiments and applications that require the detection on large areas of minimum ionizing particles, heavy ions, gamma rays or neutrons with sub-100ps accuracy. By simply 'stretching' the original concept outlined by Fonte, Smirnitsky and Williams, MtRPCs can be operated nowadays under a particle flux close to 100kHz/cm2, and assembled in m-square modules with a timing accuracy approaching 50ps (20ps in small detectors). We will revisit in this talk the limits of the MtRPC technology towards the 10ps landmark, as well as discussing recent approaches and ideas. Contact;三部(mibe at post.kek.jp) ======================================================================