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Title: A new clocking method for a charge coupled device

Abstract

We propose and demonstrate a new clocking method for a charge-coupled device (CCD). When a CCD is used for a photon counting detector of X-rays, its weak point is a limitation of its counting rate, because high counting rate makes non-negligible pile-up of photons. In astronomical usage, this pile-up is especially severe for an observation of a bright point-like object. One typical idea to reduce the pile-up is a parallel sum (P-sum) mode. This mode completely loses one-dimensional information. Our new clocking method, panning mode, provides complementary properties between the normal mode and the P-sum mode. We performed a simple simulation in order to investigate a pile-up probability and compared the simulated result and actual obtained event rates. Using this simulation and the experimental results, we compared the pile-up tolerance of various clocking modes including our new method and also compared their other characteristics.

Authors:
;  [1];  [2]
  1. Department of Physics, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima–ku, Tokyo 171–8501 (Japan)
  2. Department of Information Science, Faculty of Liberal Arts, Tohoku Gakuin University, 2-1-1 Tenjinzawa, Izumi-ku, Sendai, Miyagi 981-3193 (Japan)
Publication Date:
OSTI Identifier:
22308832
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CHARGE-COUPLED DEVICES; COMPARATIVE EVALUATIONS; COUNTING RATES; PHOTONS; PROBABILITY; PULSE PILEUP; TOLERANCE; X-RAY DETECTION

Citation Formats

Umezu, Rika, Kitamoto, Shunji, E-mail: kitamoto@rikkyo.ac.jp, and Murakami, Hiroshi. A new clocking method for a charge coupled device. United States: N. p., 2014. Web. doi:10.1063/1.4885468.
Umezu, Rika, Kitamoto, Shunji, E-mail: kitamoto@rikkyo.ac.jp, & Murakami, Hiroshi. A new clocking method for a charge coupled device. United States. doi:10.1063/1.4885468.
Umezu, Rika, Kitamoto, Shunji, E-mail: kitamoto@rikkyo.ac.jp, and Murakami, Hiroshi. Tue . "A new clocking method for a charge coupled device". United States. doi:10.1063/1.4885468.
@article{osti_22308832,
title = {A new clocking method for a charge coupled device},
author = {Umezu, Rika and Kitamoto, Shunji, E-mail: kitamoto@rikkyo.ac.jp and Murakami, Hiroshi},
abstractNote = {We propose and demonstrate a new clocking method for a charge-coupled device (CCD). When a CCD is used for a photon counting detector of X-rays, its weak point is a limitation of its counting rate, because high counting rate makes non-negligible pile-up of photons. In astronomical usage, this pile-up is especially severe for an observation of a bright point-like object. One typical idea to reduce the pile-up is a parallel sum (P-sum) mode. This mode completely loses one-dimensional information. Our new clocking method, panning mode, provides complementary properties between the normal mode and the P-sum mode. We performed a simple simulation in order to investigate a pile-up probability and compared the simulated result and actual obtained event rates. Using this simulation and the experimental results, we compared the pile-up tolerance of various clocking modes including our new method and also compared their other characteristics.},
doi = {10.1063/1.4885468},
journal = {Review of Scientific Instruments},
number = 7,
volume = 85,
place = {United States},
year = {Tue Jul 15 00:00:00 EDT 2014},
month = {Tue Jul 15 00:00:00 EDT 2014}
}
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