タムラ タダヒサ   Tamura Tadahisa
  田村 忠久
   所属   神奈川大学  工学部 物理学教室
    神奈川大学大学院  工学研究科 工学専攻(応用物理学領域)
   職種   教授
言語種別 日本語
発行・発表の年月 2011/08
形態種別 学術雑誌
標題 Luminosity determination in §qrt{s} =7TeV proton Collisions Using The LHCf Front Counter at
LHC
執筆形態 共著
掲載誌名 32ND INTERNATIONAL COSMIC RAY CONFERENCE, BEIJING 2011
巻・号・頁 5,23-26頁
著者・共著者 K. TAKI, O. ADRIANI, L. BONECHI, M. BONGI, G. CASTELLINI, R. D’ALESSANDRO, K.FUKATSU, M.
HAGUENAUER, Y. ITOW, K. KASAHARA , K.KAWADE, D.MACINA, T. MASE, K. MASUDA, H. MENJO,
G.MITSUKA, Y. MURAKI, K.NODA, P. PAPINI, A.L. PERROT, S. RICCIARINI, T. SAKO, Y. SHIMIZU,
K.SUZUKI, T.SUZUKI, T. TAMURA, S. TORII, A. TRICOMI, W.C. TURNER
概要 The LHCf experiment is dedicated to measure the particles emitted to forward region of proton-proton
collisions at LHC. The physics goal is to afford the data for the calibration and improvement of the hadron interaction
models. In this experiment, the luminosity that is necessary parameter to normalize the data has been determined with
the counting rate of a detector called Front Counter and the conversion factor from the rate to the luminosity. During the
LHCf physics operation at ps =7 TeV in 2010, the two calibrations of this conversion factor were carried out in 26th of
April and 9th of May. This calibration is named vdM scan that is invented by S. van der Meer in 1969. The luminosity
during the vdM scans were determined within 5%and 4%accuracy for April and May scan respectively. Finally, because
the conversion factor is estimated within 5.5% accuracy, the luminosity determination in the LHCf experiment is also
5.5% accuracy.