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Title: The European Photon Imaging Camera on XMM-Newton: The MOS cameras
Authors: Turner, M. J. L.
Abbey, A.
Bennie, P. J.
Cole, R.
Denby, M.
Dowson, J.
Gretton, L.
Griffiths, R. G.
Holland, A. D.
Pounds, K. A.
Reeves, J. N.
Sembay, S.
Short, A. D. T.
Spragg, J.
Ward, M. J.
Whitehead, S.
Arnaud, M.
Belsole, E.
Cara, C.
Ferrando, P.
Lortholary, M.
Pigot, C.
Poindron, E.
Rothenflug, R.
Sauvageot, J. L.
Schmitt, D.
Vigroux, L.
Zonca, E.
Balasini, M.
Barbera, M.
Collura, A.
Bernard, J. P.
Hainaut, O.
Hochedez, J. F.
Jourdain, E.
Marty, P.
Salvetat, P.
Bignami, G. F.
Conte, M.
Ghizzardi, S.
Lagostina, A.
La Palombara, N.
Molendi, S.
Tiengo, A.
Vercellone, S.
Villa, G.
Boer, M.
Chabaud, C.
Cros, A.
Briel, U.
Reppin, C.
Strüder, L.
Trümper, J.
Butler, I.
Goodall, C. V.
Dhez, P.
Di Coco, G.
Gianotti, F.
Stephen, J.
Trifoglio, M.
Kendziorra, E.
Laine, R.
Lumb, D.
First Published: Jan-2001
Publisher: EDP Sciences for European Southern Observatory (ESO), Springer Verlag
Citation: Astronomy and Astrophysics, 2001, 365 (1)
Abstract: The EPIC focal plane imaging spectrometers on XMM-Newton use CCDs to record the images and spectra of celestial X-ray sources focused by the three X-ray mirrors. There is one camera at the focus of each mirror; two of the cameras contain seven MOS CCDs, while the third uses twelve PN CCDs, defining a circular field of view of 30$^{\prime}$ diameter in each case. The CCDs were specially developed for EPIC, and combine high quality imaging with spectral resolution close to the Fano limit. A filter wheel carrying three kinds of X-ray transparent light blocking filter, a fully closed, and a fully open position, is fitted to each EPIC instrument. The CCDs are cooled passively and are under full closed loop thermal control. A radio-active source is fitted for internal calibration. Data are processed on-board to save telemetry by removing cosmic ray tracks, and generating X-ray event files; a variety of different instrument modes are available to increase the dynamic range of the instrument and to enable fast timing. The instruments were calibrated using laboratory X-ray beams, and synchrotron generated monochromatic X-ray beams before launch; in-orbit calibration makes use of a variety of celestial X-ray targets. The current calibration is better than 10% over the entire energy range of 0.2 to 10 keV. All three instruments survived launch and are performing nominally in orbit. In particular full field-of-view coverage is available, all electronic modes work, and the energy resolution is close to pre-launch values. Radiation damage is well within pre-launch predictions and does not yet impact on the energy resolution. The scientific results from EPIC amply fulfil pre-launch expectations.
DOI Link: 10.1051/0004-6361:20000087
ISSN: 0004-6361
eISSN: 1432-0746
Type: Journal Article
Rights: Archived with reference to SHERPA/RoMEO and publisher website. Reproduced with permission from Astronomy & Astrophysics, © ESO
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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