Application of a mesh experiment for a proton beam onto the charge-coupled device

Tsunemi, H.; Miki, Masahito; Miyata, Emi

doi:10.1109/tns.2004.835571

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…One is a notch structure that confines the charge transfer channel to a very narrow width. This improves a radiationhardness by a factor of three (Tsunemi et al 2004). The other is a charge-injection (CI) gate through which we can continuously inject some amount of charge at every 64 rows in 64 binning mode (Miyata et al 2002).…”

Section: Performance Of the Ccd In Orbitmentioning

confidence: 96%

In-Orbit Performance of the MAXI/SSC onboard the ISS

Tsunemi

Tomida²,

Katayama

et al. 2010

Publications of the Astronomical Society of Japan

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We report here the in orbit performance of the CCD camera (MAXI/SSC) onboard the International Space Station (ISS). It was commissioned in August, 2009. This is the first all-sky survey mission employing X-ray CCDs. It consists of 32 CCDs each of which is 1 inch square. It is a slit camera with a field of view of 1 • .5×90 • and scans the sky as the rotation of the ISS.The CCD on the SSC is cooled down to the working temperature around −60 • C by the combination of the peltier cooler, a loop heat pipe and a radiator. The standard observation mode of the CCD is in a parallel sum mode (64-binning). The CCD functions properly although it suffers an edge glow when the Sun is near the field of view (FOV) which reduces the observation efficiency of the SSC down to about 30%. The performance of the CCD is continuously monitored both by the Mn-K X-rays and by the Cu-K X-rays.There are many sources detected, not only point sources but extended sources. Due to the lack of the effective observation time, we need more observation time to obtain an extended emission analysis extraction process.

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Section: Performance Of the Ccd In Orbitmentioning

confidence: 96%

In-Orbit Performance of the MAXI/SSC onboard the ISS

Tsunemi

Tomida²,

Katayama

et al. 2010

Publications of the Astronomical Society of Japan

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“…There were two types of the LBNL CCDs whose data were published: one had the "notch" structure and the other did not. The notch structure, a narrow implant in the CCD channel confining a charge packet to a fraction of the pixel volume in an additional potential well, has been known to reduce the CTI [18,8]. In order to make a direct comparison, we plot our P-channel CCD data without applying the CI and the LBNL P-channel CCD data without the notch structure.…”

Section: Discussionmentioning

confidence: 99%

Proton radiation damage experiment on P-Channel CCD for an X-ray CCD camera onboard the ASTRO-H satellite

Mori

Nishioka

Ohura

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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24We report on a proton radiation damage experiment on P-channel CCD newly developed for an X-ray CCD camera onboard the Astro-H satellite.The device was exposed up to 10 9 protons cm −2 at 6.7 MeV. The charge transfer inefficiency (CTI) was measured as a function of radiation dose. In comparison with the CTI currently measured in the CCD camera onboard the Suzaku satellite for 6 years, we confirmed that the new type of P-channelPreprint submitted to Nuclear Physics B June 25, 2013 CCD is radiation tolerant enough for space use. We also confirmed that a charge-injection technique and lowering the operating temperature efficiently work to reduce the CTI for our device. A comparison with other P-channel CCD experiments is also discussed.

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“…30 The CCD-NeXT4 is also equipped with a notch structure that improves the radiation hardness by a factor of three. 31 There are some other requirements: contamination, optical photons, stray light, alignment, calibration and working temperature. Taking these requirements into account, we determine the SXI configuration.…”

Section: X-ray Ccd and Fpamentioning

confidence: 99%

Soft x-ray imager (SXI) onboard ASTRO-H

Tsunemi¹,

Hayashida²,

Tsuru³

et al. 2010

Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray

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We are designing an X-ray CCD camera (SXI) for ASTRO-H, including many new items. We have developed the CCD, CCD-NeXT4, that is a P-channel type CCD. It has a thick depletion layer of 200μm with an imaging area of 30 mm square. Since it is back-illuminated, it has a good low energy response and is robust against the impact of micro-meteorites. We will employ 4 chips to cover the area of 60 mm square. A mechanical rather than peltier cooler will be employed so that we can cool the CCD to -120 • C. We will also introduce an analog ASIC that is placed very close to the CCD. It performs well, having a similar noise level to that assembled by using individual parts used on SUZAKU. We also employ a modulated X-ray source (MXS), that improves the accuracy of the calibration. The SXI will have one of the largest SΩ among various satellites.

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Application of a mesh experiment for a proton beam onto the charge-coupled device

Cited by 5 publications

References 17 publications

In-Orbit Performance of the MAXI/SSC onboard the ISS

In-Orbit Performance of the MAXI/SSC onboard the ISS

Proton radiation damage experiment on P-Channel CCD for an X-ray CCD camera onboard the ASTRO-H satellite

Soft x-ray imager (SXI) onboard ASTRO-H

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