@inproceedings{cb5591bd8b794acc9bb6038c3e93df85,
title = "Ghost-ray reduction and early results from the third FOXSI sounding rocket flight",
abstract = "The Focusing Optics X-ray Solar Imager (FOXSI) sounding rocket experiment demonstrates the technique of focusing hard X-ray (HXR) optics for the study of fundamental questions about the high-energy Sun. Solar HXRs provide one of the most direct diagnostics of accelerated electrons and the impulsive heating of the solar corona. Previous solar missions have been limited in sensitivity and dynamic range by the use of indirect imaging, but technological advances now make direct focusing accessible in the HXR regime, and the FOXSI rocket experiment optimizes HXR focusing telescopes for the unique scientific requirements of the Sun. FOXSI has completed three successful flights between 2012 and 2018. This paper gives a brief overview of the experiment, focusing on the third flight of the instrument on 2018 Sept. 7. We present the telescope upgrades highlighting our work to understand and reduce the effects of singly reflected X-rays and show early science results obtained during FOXSI's third flight.",
keywords = "The Sun, X-ray focusing optics, X-rays, high-energy, sounding rocket",
author = "Sophie Musset and Buitrago-Casas, {Juan Camilo} and Lindsay Glesener and Stephen Bongiorno and Sasha Courtade and Athiray, {P. S.} and Juliana Vievering and Ishikawa, {Shin Nosuke} and Noriyuki Narukage and Kento Furukawa and Daniel Ryan and Greg Dalton and Zoe Turin and Lance Davis and Tadayuki Takahashi and Shin Watanabe and Ikuyuki Mitsuishi and Kouichi Hagino and Tomoko Kawate and Paul Turin and Steven Christe and Brian Ramsey and S{\"a}m Krucker",
note = "Funding Information: The FOXSI-3 sounding rocket is funded by NASA LCAS grant NNX16AL60G. We acknowledge the NSF for its support of space physics at UMN via a faculty development grant AGS-1429512. The FOXSI team is grateful to the NSROC teams at WSMR and Wallops for the excellent operation of their systems. Furthermore, the authors would like to acknowledge the contributions of each member of the FOXSI experiment team to the project, particularly our team members at ISAS and Kavli IPMU for the provision of Si and CdTe detectors and at MSFC for the fabrication of the focusing optics. Funding Information: This work was supported by NASA Headquarters under the NASA Earth and Space Science Fellowship Program Grant 80NSSC17K0430. Funding Information: This work was supported by JSPS KAKENHI Grant Numbers JP17H04832, JP16H02170, JP16H03966, JP24244021, JP20244017, and World Premier International Research Center Initiative (WPI), MEXT, Japan. Funding Information: This work was supported by JSPS KAKENHI Grant JP16H02170, JP15H03647, JP21540251.; UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI 2019 ; Conference date: 11-08-2019 Through 13-08-2019",
year = "2019",
doi = "10.1117/12.2530029",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Siegmund, {Oswald H.}",
booktitle = "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI",
}