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Science Requirement Document for the European Solar Telescope

AuthorsSchlichenmaier, R.; Bellot Rubio, Luis R. ; Collados, M.; Erdelyi, R.; Feller, A.; Fletcher, L.; Jurcak, J.; Khomenko, E.; Leenaarts, J.; Matthews, S.; Belluzzi, L.; Carlsson, M.; Dalmasse, K.; Danilovic, S.; Gömöry, P.; Kuckein, C.; Manso Sainz, R.; Martinez Gonzalez, M. J.; Mathioudakis, M.; Ortiz, A.; Riethmüller, T. L.; Rouppe Van Der Voort, L.; Simoes, P. J. A.; Trujillo Bueno, J.; Utz, D.; Zuccarello, F.
Issue Date2019
PublisherCornell University
CitationScience Requirement Document for the European Solar Telescope (2019)
AbstractThe European Solar Telescope (EST)1 is a research infrastructure for solar physics. It is planned to be an on-axis solar telescope with an aperture of 4m and equipped with an innovative suite of spectro-polarimetric and imaging post-focus instrumentation. The EST project was initiated and is driven by EAST2, the European Association for Solar Telescopes. EAST was founded in 2006 as an association of 14 European countries. Today, as of December 2019, EAST consists of 26 European research institutes from 18 European countries. The Preliminary Design Phase of EST was accomplished between 2008 and 2011. During this phase, in 2010, the first version of the EST Science Requirement Document (SRD)was published. After EST became a project on the ESFRI3 roadmap 2016, the preparatory phase started. This phase is partially supported by EU funding through the PRE-EST H2020 project4. The goal of the preparatory phase is to accomplish a final design for the telescope and the legal governance structure of EST. A major milestone on this path is to revisit and update the Science Requirement Document (SRD). The EST Science Advisory Group (SAG) has been constituted by EAST and the Board of the PRE-EST4 EU project in November 2017 and has been charged with the task of providing with a final statement on the science requirements for EST. Based on the conceptual design, the SRD update takes into account recent technical and scientific developments, to ensure that EST provides significant advancement beyond the current state-of-the-art. The present update of the EST SRD has been developed and discussed during a series of EST SAG meetings: 1st telecon meeting on Nov 5th, 2017 2nd meeting in Freiburg, Nov 24, 2017 3rd telecon meeting, Dec 15, 2017 4th telecon meeting, March 26, 2018 5th meeting in Belfast, April 16 & 17, 2018 6th meeting in Naxos, June 16, 2018 7th telecon meeting, January 14, 2019 8th telecon meeting, October 11, 2019 9th telecon meeting, October 22, 2019 10th telecon meeting, December 3, 2019 The SRD develops the top-level science objectives of EST into individual science cases. Identifying critical science requirements is one of its main goals. Those requirements will define the capabilities of EST and the post-focus instrument suite. The technical requirements for the final design of EST will be derived from the SRD. The science cases presented in Part II (Sects. 1 to 8) are not intended to cover all the science questions to be addressed with EST, but rather to provide a precise overview of the capabilities that will make of EST a competitive state-of-the-art telescope to push the boundaries of our knowledge over the next few decades. The science cases contain detailed observing programmes specifying the type of observations needed to solve specific science problems. An eort is being made to define the parameters of the required observations as accurately as possible, taking into account both present capabilities and technological developments expected in the near future. The tables of the observing programmes corresponding to the science cases are compiled in Sect. 10. The EST science cases represent challenging observations that put strong constraints on the telescope and its instrument suite. Ultimately, they will be translated into Technical Requirement Document (TRD) leading to the final EST design to be implemented during the construction phase. The unique design advantages of the EST concept is presented in Section 11. The eect of the science cases on the EST design are discussed in Section 12 and summarized in Section 13.
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