OPERA resistive plate chambers underground test results

被引：6
|
作者：
Bergnoli, A.
Brugnera, R.
Candela, A.
Carrara, E.
Ciesielski, R.
Dal Corso, F.
Degli Esposti, L.
Di Giovanni, A.
D'Incecco, M.
Di Troia, C.
Dusini, S.
Fanin, C.
Felici, G.
Gambarara, A.
Garfagnini, A.
Gatta, M.
Grianti, F.
Gustavino, C.
Lindozzi, M.
Longhin, A. [1 ]
Mengucci, A.
Monacelli, P.
Paoloni, A.
Stanco, L.
Tatananni, E.
Terranova, F.
Spinetti, M.
Stipcevic, M.
Sugonyaev, V.
Terminiello, L.
Ventura, M.
Votano, L.
机构：
[1] Univ Padua, Padua, Italy
[2] Ist Nazl Fis Nucl, Padua, Italy
[3] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, Italy
[4] Univ Bologna, Bologna, Italy
[5] Ist Nazl Fis Nucl, Bologna, Italy
[6] Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy
[7] Univ Aquila, I-67100 Laquila, Italy
[8] Ist Nazl Fis Nucl, I-67100 Laquila, Italy
[9] Rudjer Boskovic Inst, Zagreb, Croatia
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2006年 / 158卷
关键词：
D O I：
10.1016/j.nuclphysbps.2006.07.016
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The OPERA experiment [1] will study nu(mu)->nu(tau) oscillations through tau appearance on the 732 Km long CERN to Gran Sasso baseline. The magnet yokes of the two muon spectrometers are instrumented with 44 layers of high resistivity bakelite Resistive Plate Chambers (RPCs) operated in streamer mode. Each layer covers about 70 m(2). Four RPC planes were instrumented and the first tests were performed confirming a good behaviour of the installed RPCs in terms of intrinsic noise and operating currents. The measured noise maps agree with those obtained in the extensive quality tests performed at surface. Counting rates are below 20 Hz/m(2). Single and multiple cosmic muon tracks were also reconstructed. The estimated efficiency is close to the geometrical limit and the very first measurements of the absolute and differential muon flux are in agreement with expectations.
引用
收藏
页码：35 / 39
页数：5
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