11 July 2016 Chromospheric LAyer SpectroPolarimeter (CLASP2)
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Abstract
The sounding rocket Chromospheric Lyman-Alpha SpectroPolarimeter (CLASP) was launched on September 3rd, 2015, and successfully detected (with a polarization accuracy of 0.1 %) the linear polarization signals (Stokes Q and U) that scattering processes were predicted to produce in the hydrogen Lyman-alpha line (Lyα; 121.567 nm). Via the Hanle effect, this unique data set may provide novel information about the magnetic structure and energetics in the upper solar chromosphere. The CLASP instrument was safely recovered without any damage and we have recently proposed to dedicate its second flight to observe the four Stokes profiles in the spectral region of the Mg II h and k lines around 280 nm; in these lines the polarization signals result from scattering processes and the Hanle and Zeeman effects. Here we describe the modifications needed to develop this new instrument called the "Chromospheric LAyer SpectroPolarimeter" (CLASP2).
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Noriyuki Narukage, David E. McKenzie, Ryoko Ishikawa, Javier Trujillo-Bueno, Bart De Pontieu, Masahito Kubo, Shin-nosuke Ishikawa, Ryouhei Kano, Yoshinori Suematsu, Masaki Yoshida, Laurel A. Rachmeler, Ken Kobayashi, Jonathan W. Cirtain, Amy R. Winebarger, Andres Asensio Ramos, Tanausu del Pino Aleman, Jiri Štĕpán, Luca Belluzzi, Juan Ignacio Larruquert, Frédéric Auchère, Jorrit Leenaarts, Mattias J. L. Carlsson, "Chromospheric LAyer SpectroPolarimeter (CLASP2)", Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 990508 (11 July 2016); doi: 10.1117/12.2232245; https://doi.org/10.1117/12.2232245
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