COMPASS量热法与未来计划
COMPASS Calorimetry in view of future plans
摘要：
欧洲核子研究中心空间站的COMPASS实验致力于强子物理学，研究方案广泛，包括使用μ子作为探针研究核子自旋结构，以及使用强子束研究介子光谱学中的各种问题。两级固定靶光谱仪，在两个阶段中的电磁（em）和强子量热提供了光子探测在一个宽的角度范围。正如本文所讨论的，COMPASS em量热法对2008年开始的强子计划以及计划中的COMPASS未来通过DVCS光子测量GPD的计划起着至关重要的作用。我们提出的光子探测覆盖范围预见，第一，初步结果表征现有的COMPASS电磁量能器，在欧洲核子研究中心T9设施2007年底采取的测试束数据的基础上，目前的性能。
英文摘要：
The COMPASS experiment at the CERN SPS is dedicated to hadron physics with a broad research programme, including the study of the nucleon spin structure using muons as a probe and a variety of issues in meson spectroscopy using hadron beams. The two stage fixed target spectrometer with electromagnetic (em) and hadronic calorimetry in both stages provides photon detection in a wide angular range. As discussed in this paper, the COMPASS em calorimetry plays a crucial rôle for the Hadron programme started in 2008 as well as for the planned COMPASS future programme of measuring GPDs via exclusive DVCS photons. We present the photon detection coverage foreseen, and first, preliminary results characterising the present performances of both existing COMPASS electromagnetic calorimeters, based on test beam data taken at CERN T9 facility end of 2007.
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