Search Publications
In-Orbit Performance of the Digital Electronics for the X-Ray Microcalorimeter Onboard the Hitomi Satellite
Tsujimoto, M.; Tashiro, M. S.; Ishisaki, Y. +9 more
The pulse shape processor is the onboard digital electronics unit of the X-ray microcalorimeter instrument—the soft X-ray spectrometer—onboard the Hitomi satellite. It processes X-ray events using the optimum filtering with limited resources. It was operated for 36 days in orbit continuously without issues and met the requirement of processing a 1…
Temporal Gain Correction for X-ray Calorimeter Spectrometers
Tsujimoto, M.; Ishisaki, Y.; Yamada, S. +14 more
Calorimetric X-ray detectors are very sensitive to their environment. The boundary conditions can have a profound effect on the gain including heat sink temperature, the local radiation temperature, bias, and the temperature of the readout electronics. Any variation in the boundary conditions can cause temporal variations in the gain of the detect…
Characterization and Physical Explanation of Energetic Particles on Planck HFI Instrument
Bock, J. J.; Catalano, A.; Coulais, A. +30 more
The Planck High Frequency Instrument (HFI) has been surveying the sky continuously from the second Lagrangian point (L2) between August 2009 and January 2012. It operates with 52 high impedance bolometers cooled at 100 mK in a range of frequency between 100 GHz and 1 THz with unprecedented sensitivity, but strong coupling with cosmic radiation. At…
Monte-Carlo Simulations of the Suzaku-XRS Residual Background Spectrum
Piro, L.; Santangelo, A.; Mitsuda, K. +7 more
Cryogenic micro-calorimeters are suitable to detect small amounts of energy deposited by electromagnetic and nuclear interactions, which makes them attractive in a variety of applications on ground and in space. The only X-ray micro-calorimeter that operated in orbit to date is the X-Ray Spectrometer on-board of the Japanese Suzaku satellite. We d…
The EBIT Calorimeter Spectrometer: A New, Permanent User Facility at the LLNL EBIT
Kilbourne, C. A.; Porter, F. S.; Kelley, R. L. +8 more
The EBIT Calorimeter Spectrometer (ECS) is currently being completed and will be installed at the EBIT facility at the Lawrence Livermore National Laboratory in October 2007. The ECS will replace the smaller XRS/EBIT microcalorimeter spectrometer that has been in almost continuous operation since 2000. The XRS/EBIT was based on a spare laboratory …
Microcalorimeter Instruments for the Spectrum-R(X)G and NeXT Missions
Ohashi, Takaya; Mitsuda, Kazuhisa; den Herder, Jan-Willem +2 more
X-ray spectrometers utilizing a microcalorimeter array are presently under study for the Russian Spectrum R-G (or Spectrum-X-Gamma) mission, which is to be launched in 2011, and for the Japanese NeXT (New X-ray Telescope or Non-thermal energy eXploration Telescope) mission, whose launch is expected to be in 2012 to 2015. The primary instrument of …