Dr Tuomo Tikkanen

Research associate


I joined the university in 2008 to work on the Mid-Infrared Instrument for the James Webb Space Telescope, which was launched on Christmas Day 2021, and soon I also started to work on the Mercury Imaging X-ray Spectrometer for the BepiColombo mission, which is on its way to Mercury. I had previously worked with X-ray and other radiation detector systems, their testing and characterisation for space-borne astrophysics, particle physics and atmospheric physics since 1990.


My funding comes from external sources, mainly the UK Space Agency to participate in the BepiColombo, JWST and SMILE missions with some STFC funding to participate in the science exploitation of the James Webb Space Telescope as member of MIRI Science Team and co-investigator in Guest Observer proposals.


(0) Bunce et al., "The BepiColombo Mercury Imaging X-Ray Spectrometer: Science Goals, Instrument Performance and Operations", Space Science Reviews 11214, 750 (2020).
Glasse et al., "The Mid-Infrared Instrument for the James Webb Space Telescope, IX: Predicted Sensitivity", PASP 127, 953 (2015) 686.
Lehtolainen et al., "Estimates of in-flight calibration source activities for the SIXS X-ray detectors on board BepiColombo", Nucl. Instrum. Meth. A 636, 1 (2011) 48.
Sopczak et al., "Comparison of Measurements of Charge Transfer Inefficiencies in a CCD With High-Speed Column Parallel Readout", IEEE Trans. Nucl. Sci. 57, 2/II (2010) 854.
Paizis et al., "Resolving the hard X-ray emission of GX 5-1 with INTEGRAL", Astron. Astroph. 443, 2 (2005) 599.
Bird et al., "IBIS ground calibration", Astron. Astroph. 411, 1 (2003) L159.
Arola et al., "A new approach to estimating the albedo for snow-covered surfaces in the satellite UV method", J Geophys. Res. Atmospheres 108, D17 (2003) 4531.
Tikkanen et al., "Electrode thickness measurement of a Si(Li) detector for the SIXA array", Nucl. Instrum. Meth. A 403, 2-3 (1998) 425.
Tikkanen et al., "Characterising a Si(Li) detector element for the SIXA X-ray spectrometer", Nucl. Instrum. Meth. A 390, 3 (1997) 329.
Tikkanen and Huovelin, "Transmission properties of the X-ray window for the SIXA spectrometer", Nucl. Instrum. Meth. A 379, 1 (1996) 130.


Press and media



Doctor of Technology in Technical Physics, Helsinki University of Technology
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