Measurement of KL flux at the J-PARC neutral-kaon beam line
Measurement of KL flux at the J-PARC neutral-kaon beam line
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J-PARC 中性高介子光束线 KL 通量的测量
DOI：
10.1016/j.nima.2011.11.010
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
et.al.
中科院分区：
文献类型：
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作者：
Koji Shiomi;et.al.
本文描述了在J-PARC中性-K介子束线上进行的KL 0通量测量。这条光束线是为一项旨在观察CP破坏稀有衰变KL 0 →π0的实验而建造的。初始质子能量为30 GeV，KL_0产生角为16°。在物理运行之前，通过计算KL 0 →π+π−π 0衰变来测量KL 0通量和光谱，该装置由电磁量热计和速端系统组成。从这些测量的结果，并与各种强子相互作用模拟。
We describe the KL0flux measurements performed at the J-PARC neutral-kaon beam line. This beam line was constructed for an experiment aiming to observe the CP-violating rare decay KL0→π0νν¯. The primary proton energy was 30GeV and the KL0production angle was 16°. Prior to the physics run, the KL0flux and spectrum were measured by counting KL0→π+π−π0decays with a simple setup, which was composed of an electromagnetic calorimeter and a hodoscope system. Results from these measurements are presented and compared with various hadron-interaction simulations.