研究者情報 | 神奈川大学

タムラ　タダヒサ Tamura Tadahisa 田村　忠久所属神奈川大学工学部応用物理学科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.