Current status of the x-ray mirror for the XL-Calibur experiment

Kengo Hattori; Hironori Matsumoto; Quincy Abarr; Hisamitsu Awaki; Richard Bose; Dana Braun; Gianluigi De Geronimo; Paul Dowkontt; Teruaki Enoto; Manel Errando; Yasushi Fukazawa; Thomas Gadson; Victor Guarino; Shuichi Gunji; Kiyoshi Hayashida; Scott Heatwole; Shuntaro Ide; Manabu Ishida; Nirmal Iyer; Henric Krawczynski; Yoshitomo Maeda; Takuya Miyazawa; Hirofumi Noda; Takashi Okajima; Hiromitsu Takahashi; Keisuke Tamura; Hiroshi Tsunemi; Fabian Kislat; Mozsl Kiss; Takao Kitaguchi; Rakhee Kushwah; James Lanzi; Shaorui Li; Lindsey Lisalda; Tsunefumi Mizuno; Nozomi Nakaniwa; Mark Pearce; Zachary Peterson; Brian Rauch; David Stuchlik; Mai Takeo; Toru Tamagawa; Kazumi Uchida; Andrew West

doi:10.1117/12.2560928

30 December 2020 Current status of the x-ray mirror for the XL-Calibur experiment

Kengo Hattori, Hironori Matsumoto, Quincy Abarr, Hisamitsu Awaki, Richard Bose, Dana Braun, Gianluigi De Geronimo, Paul Dowkontt, Teruaki Enoto, Manel Errando, Yasushi Fukazawa, Thomas Gadson, Victor Guarino, Shuichi Gunji, Kiyoshi Hayashida, Scott Heatwole, Shuntaro Ide, Manabu Ishida, Nirmal Iyer, Henric Krawczynski, Yoshitomo Maeda, Takuya Miyazawa, Hirofumi Noda, Takashi Okajima, Hiromitsu Takahashi, Keisuke Tamura, Hiroshi Tsunemi, Fabian Kislat, Mozsl Kiss, Takao Kitaguchi, Rakhee Kushwah, James Lanzi, Shaorui Li, Lindsey Lisalda, Tsunefumi Mizuno, Nozomi Nakaniwa, Mark Pearce, Zachary Peterson, Brian Rauch, David Stuchlik, Mai Takeo, Toru Tamagawa, Kazumi Uchida, Andrew West

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114445W (2020) https://doi.org/10.1117/12.2560928
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

XL-Calibur is a balloon-borne hard X-ray polarimetry mission, the first flight of which is currently foreseen for 2021. XL-Calibur carries an X-ray telescope consists of consists of 213 Wolter I grazing-incidence mirrors which are nested in a coaxial and cofocal configuration. The optics design is nearly identical to the Hard X-ray Telescope (HXT) on board the ASTRO-H satellite. The telescope was originally fabricated for the Formation Flying Astronomical Survey Telescope (FFAST) project. However, the telescope can be used for XL-Calibur, since the FFAST project was terminated before completion. The mirror surfaces are coated with Pt/C depth-graded multilayers to reflect hard X-rays above 10 keV by Bragg reflection. The effective area of the telescope is larger than 300 cm^2 at 30 keV. The mirrors are supported by alignment bars in the housing, and each of the bars has a series of 213 grooves to hold the mirrors. To obtain the best focus of the optics, the positions of the mirrors have to be adjusted by tuning the positions of the alignment bars. The tuning of the mirror positions is conducted using the X-ray beam at the synchrotron facility SPring-8 BL20B2, and this process is called optical tuning. First the positions of the second reflectors are tuned, and then those of the first reflectors are tuned. We did the first optical tuning in Jan 2020. The second tuning will be planned between April to July, 2020. This paper reports the current status of the hard X-ray telescope for XL-Calibur.

Citation Download Citation

Kengo Hattori, Hironori Matsumoto, Quincy Abarr, Hisamitsu Awaki, Richard Bose, Dana Braun, Gianluigi De Geronimo, Paul Dowkontt, Teruaki Enoto, Manel Errando, Yasushi Fukazawa, Thomas Gadson, Victor Guarino, Shuichi Gunji, Kiyoshi Hayashida, Scott Heatwole, Shuntaro Ide, Manabu Ishida, Nirmal Iyer, Henric Krawczynski, Yoshitomo Maeda, Takuya Miyazawa, Hirofumi Noda, Takashi Okajima, Hiromitsu Takahashi, Keisuke Tamura, Hiroshi Tsunemi, Fabian Kislat, Mozsl Kiss, Takao Kitaguchi, Rakhee Kushwah, James Lanzi, Shaorui Li, Lindsey Lisalda, Tsunefumi Mizuno, Nozomi Nakaniwa, Mark Pearce, Zachary Peterson, Brian Rauch, David Stuchlik, Mai Takeo, Toru Tamagawa, Kazumi Uchida, and Andrew West "Current status of the x-ray mirror for the XL-Calibur experiment", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114445W (30 December 2020); https://doi.org/10.1117/12.2560928

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available