[P-PS03] 太陽系小天体：太陽系の形成と進化における最新成果と今後の展望

[PPS03-P11] Progress report of development and ground calibration of DESTINY+ Dust Analyser 2024

*平井 隆之¹、小林 正規¹、荒井 朋子¹、木村 宏¹、薮田 ひかる²、伊藤 元雄³、山口 亮⁴、佐々木 晶⁵、矢野 創⁶、Mario Trieloff⁷、Thomas Ludwig⁷、Winfried Schwarz⁷、Jens Hopp⁷、Jon Hillier⁸、Nozair Khawaja⁸、Frank Postberg⁸、Harald Krueger⁹、Ralf Srama¹⁰、Jonas Simolka¹⁰、Carsten Henselowsky¹¹ (1.千葉工業大学惑星探査研究センター、2.広島大学、3.海洋研究開発機構、4.国立極地研究所、5.大阪大学、6.宇宙航空研究開発機構、7.ハイデルベルク大学、8.ベルリン自由大学、9.マックスプランク太陽系研究所、10.シュトゥットガルト大学、11.ドイツ航空宇宙センター)

キーワード：ダスト、小惑星(3200)フェートン、衝突電離型質量分析

DESTINY⁺ Dust Analyser (DDA) is an impact ionization TOF-MS dust analyser to be onboard the JAXA's DESTINY⁺ spacecraft for Phaethon flyby exploration. DDA will reveal the bulk chemical composition of interplanetary and interstellar dust particles and Phaethon ejecta particles. DDA can obtain TOF mass spectra of positive ions generated by impact ionization of dust particles. This presentation gives the status report of the development and ground calibration of DDA in 2023 to early 2024. The structural and thermal model 1 of the DDA sensor (DDA-S STM1) has been delivered to Japan for participating in the system-level structural and thermal model tests. The flight model (FM) design of DDA will be fixed soon after the upcoming critical design review (CDR). In the calibration test with the dust accelerator at the University of Stuttgart, mineral (e.g. olivine) and organic (e.g. perylen) particles coated with conductive materials have been successfully accelerated and impacted on the engineering model (EM) of DDA. The impact ionization mass spectra have been archived for the future interpretation of spectra to be obtained in orbit.