论文标题
意向书：NA60+实验
Letter of Intent: the NA60+ experiment
论文作者
论文摘要
我们提出了一个新的固定目标实验，以研究在CERN SPS的重离子碰撞中的夸克 - 胶原等离子体（QGP）的电磁和硬探针。该实验的目的是从阈值到炭区域的阈值进行测量，以及魅力和奇怪的黑龙的Hadroonic衰变。它基于MUON光谱仪，该光谱仪包括环形磁铁和六个跟踪探测器的平面，该探测器耦合到顶点光谱仪，配备了浸入偶极子场中的SI地图。高光度是实验的必要要求，目的是在碰撞能量范围从$ \ sqrt {s _ {\ rm nn}} = 6.3 $ gev（$ e _ _ _ {$ e _ {\ rm lab} = 20 $ a sps s sqr（ nn}} = 17.3 $ gev，$ e _ {\ rm lab} = 158 $ a gev）。本文档介绍了物理动机，包括整合和放射保护研究，当前的检测器选择以及相应的研发状态以及物理绩效研究的结果。还进行了初步成本评估。
We propose a new fixed-target experiment for the study of electromagnetic and hard probes of the Quark-Gluon Plasma (QGP) in heavy-ion collisions at the CERN SPS. The experiment aims at performing measurements of the dimuon spectrum from threshold up to the charmonium region, and of hadronic decays of charm and strange hadrons. It is based on a muon spectrometer, which includes a toroidal magnet and six planes of tracking detectors, coupled to a vertex spectrometer, equipped with Si MAPS immersed in a dipole field. High luminosity is an essential requirement for the experiment, with the goal of taking data with 10$^6$ incident ions/s, at collision energies ranging from $\sqrt{s_{\rm NN}} = 6.3$ GeV ($E_{\rm lab}= 20$ A GeV) to top SPS energy ($\sqrt{s_{\rm NN}} = 17.3$ GeV, $E_{\rm lab}= 158$ A GeV). This document presents the physics motivation, the foreseen experimental set-up including integration and radioprotection studies, the current detector choices together with the status of the corresponding R&D, and the outcome of physics performance studies. A preliminary cost evaluation is also carried out.
