HAWC高能量升级，采用稀疏支腿阵列
HAWC High Energy Upgrade with a Sparse Outrigger Array
摘要：
高海拔水切伦科夫（HAWC）伽马射线观测站由300个水切伦科夫探测器组成，自2015年3月以来一直在墨西哥中部全面运行。它探测到TeV能量范围内的宇宙射线和伽马射线簇射。对于多TeV的能量，簇射重建，因此检测器的性能受到阵列内簇射的部分容纳的影响。为了提高在最高能量下的灵敏度，HAWC正在升级一个支腿阵列。它由350个小得多的切伦科夫水探测器组成，稀疏地分布在HAWC主阵列周围。这将使仪表化面积增加4-5倍。在这方面的贡献，我们将目前的升级状况，以及模拟结果的预期改进的性能的观测站。
英文摘要：
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory consists of 300 water Cherenkov detectors and has been fully operational since March 2015 in central Mexico. It detects cosmic- and gamma-ray showers in the TeV energy range. For multi-TeV energies, the shower reconstruction and hence the performance of the detector is affected by the partial containment of the showers within the array. To improve the sensitivity at the highest energies, HAWC is being upgraded with an outrigger array. It consists of 350 comparably much smaller water Cherenkov detectors, sparsely distributed around the HAWC main array. It will increase the instrumented area by a factor of 4-5. In this contribution, we will present the current status of the upgrade as well as simulation results on anticipated improvements in the performance of the observatory.
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