New CTI Correction Method for the Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer Export

@article{citeulike:3381100, abstract = {The charge transfer inefficiency (CTI) of the X-ray CCDs on board the Suzaku satellite (X-ray Imaging Spectrometers; XIS) has increased since the launch due to radiation damage, and the energy resolution has been degraded. To improve the CTI, we have applied a spaced-row charge injection (SCI) technique to the XIS in orbit; by injecting charges into CCD rows periodically, the CTI is actively decreased. The CTI in the SCI mode depends on the distance between a signal charge and a preceding injected row, and the pulse height shows periodic positional variations. Using in-flight data of onboard calibration sources and of the strong iron line from the Perseus cluster of galaxies, we studied the variation in detail. We developed a new method to correct the variation. By applying the new method, the energy resolution (FWHM) at 5.9 keV at March 2008 is \~{}155 eV for the front-illuminated CCDs and \~{}175 eV for the back-illuminated CCD.}, archivePrefix = {arXiv}, author = {Uchiyama, Hideki and Ozawa, Midori and Matsumoto, Hironori and Tsuru, Takeshi G. and Koyama, Katsuji and Kimura, Masashi and Uchida, Hiroyuki and Nakajima, Hiroshi and Hayashida, Kiyoshi and Tsunemi, Hiroshi and Mori, Hideyuki and Bamba, Aya and Ozaki, Masanobu and Dotani, Tadayasu and Takei, Dai and Murakami, Hiroshi and Mori, Koji and Ishisaki, Yoshitaka and Kohmura, Takayoshi and Prigozhin, Gregory and Kissel, Steve and Miller, Eric and Lamarr, Beverly and Bautz, Marshall}, citeulike-article-id = {3381100}, citeulike-linkout-0 = {http://arxiv.org/abs/0810.0873}, citeulike-linkout-1 = {http://arxiv.org/pdf/0810.0873}, day = {6}, eprint = {0810.0873}, keywords = {charge, cti, injection, suzaku}, month = {Oct}, posted-at = {2008-10-07 06:16:36}, priority = {2}, title = {New CTI Correction Method for the Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer}, url = {http://arxiv.org/abs/0810.0873}, year = {2008} }

TY - JOUR ID - citeulike:3381100 L3 - citeulike-article-id:3381100 N2 - The charge transfer inefficiency (CTI) of the X-ray CCDs on board the Suzaku satellite (X-ray Imaging Spectrometers; XIS) has increased since the launch due to radiation damage, and the energy resolution has been degraded. To improve the CTI, we have applied a spaced-row charge injection (SCI) technique to the XIS in orbit; by injecting charges into CCD rows periodically, the CTI is actively decreased. The CTI in the SCI mode depends on the distance between a signal charge and a preceding injected row, and the pulse height shows periodic positional variations. Using in-flight data of onboard calibration sources and of the strong iron line from the Perseus cluster of galaxies, we studied the variation in detail. We developed a new method to correct the variation. By applying the new method, the energy resolution (FWHM) at 5.9 keV at March 2008 is ~155 eV for the front-illuminated CCDs and ~175 eV for the back-illuminated CCD. TI - New CTI Correction Method for the Spaced-Row Charge Injection of the Suzaku X-Ray Imaging Spectrometer KW - charge KW - cti KW - injection KW - suzaku AU - Uchiyama, Hideki AU - Ozawa, Midori AU - Matsumoto, Hironori AU - Tsuru, Takeshi AU - Koyama, Katsuji AU - Kimura, Masashi AU - Uchida, Hiroyuki AU - Nakajima, Hiroshi AU - Hayashida, Kiyoshi AU - Tsunemi, Hiroshi AU - Mori, Hideyuki AU - Bamba, Aya AU - Ozaki, Masanobu AU - Dotani, Tadayasu AU - Takei, Dai AU - Murakami, Hiroshi AU - Mori, Koji AU - Ishisaki, Yoshitaka AU - Kohmura, Takayoshi AU - Prigozhin, Gregory AU - Kissel, Steve AU - Miller, Eric AU - Lamarr, Beverly AU - Bautz, Marshall PY - 2008/Oct/06/ UR - http://arxiv.org/abs/0810.0873 ER -