The ESA-JAXA BepiColombo mission to Mercury will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric and exospheric particle dynamics at Mercury as well as their interactions with solar wind, solar radiation, and interplanetary dust. The particle instrument suite SERENA (Search for Exospheric Refilling and Emitted Natural Abundances) is flying in space on-board the BepiColombo Mercury Planetary Orbiter (MPO) and is the only instrument for ion and neutral particle detection aboard the MPO. It comprises four independent sensors: ELENA for neutral particle flow detection, Strofio for neutral gas detection, PICAM for planetary ions observations, and MIPA, mostly for solar wind ion measurements. SERENA is managed by a System Control Unit located inside the ELENA box. In the present paper the scientific goals of this suite are described, and then the four units are detailed, as well as their major features and calibration results. Finally, the SERENA operational activities are shown during the orbital path around Mercury, with also some reference to the activities planned during the long cruise phase.

中文翻译：

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SERENA：用于确定 BepiColombo 的太阳-汞相互作用的粒子仪器套件

ESA-JAXA BepiColombo 的水星任务将提供来自两艘航天器的同步测量，为研究水星的磁层和外层粒子动力学以及它们与太阳风、太阳辐射和行星际尘埃的相互作用提供了前所未有的机会。粒子仪器套件 SERENA（搜索外层大气再填充和排放的自然丰度）正在 BepiColombo 水星行星轨道器 (MPO) 上在太空中飞行，并且是 MPO 上唯一用于离子和中性粒子检测的仪器。它包括四个独立的传感器：用于中性粒子流检测的 ELENA、用于中性气体检测的 Strofio、用于行星离子观测的 PICAM 和主要用于太阳风离子测量的 MIPA。SERENA 由位于 ELENA 盒内的系统控制单元管理。在本文中描述了该套件的科学目标，然后详细介绍了四个单元，以及它们的主要特点和校准结果。最后，在围绕水星的轨道路径中显示了 SERENA 的业务活动，同时也提到了在长巡航阶段计划的活动。