Development and evaluation of an ultra-fast ASIC for future PET scanners using TOF-capable MPPC array detectors

T. Ambe, H. Ikeda, Jun Kataoka, H. Matsuda, T. Kato

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    We developed a front-end ASIC for future PET scanners with Time-Of-Flight (TOF) capability to be coupled with 4×4 Multi-Pixel Photon Counter (MPPC) arrays. The ASIC is designed based on the open-IP project proposed by JAXA and realized in TSMC 0.35 μm CMOS technology. The circuit comprises 16-channel, low impedance current conveyors for effectively acquiring fast MPPC signals. For precise measurement of the coincidence timing of 511-keV gamma rays, the leading-edge method was used to discriminate the signals. We first tested the time response of the ASIC by illuminating each channel of a MPPC array device 3×3 mm2 in size with a Pico-second Light Pulsar with a light emission peak of 655 nm and pulse duration of 54 ps (FWHM). We obtained 105 ps (FWHM) on average for each channel in time jitter measurements. Moreover, we compensated for the time lag of each channel with inner delay circuits and succeeded in suppressing about a 700-ps lag to only 15 ps. This paper reports TOF measurements using back-to-back 511-keV signals, and suggests that the ASIC can be a promising device for future TOF-PET scanners based on the MPPC array.

    Original languageEnglish
    Pages (from-to)66-73
    Number of pages8
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume771
    DOIs
    Publication statusPublished - 2015 Jan 21

    Fingerprint

    application specific integrated circuits
    Application specific integrated circuits
    scanners
    counters
    Photons
    Pixels
    pixels
    Detectors
    evaluation
    detectors
    photons
    Full width at half maximum
    time lag
    conveyors
    delay circuits
    Delay circuits
    Conveyors
    time response
    Light emission
    leading edges

    Keywords

    • ASIC
    • Gamma-rays
    • Multi-Pixel Photon Counter
    • Positron emission tomography
    • Time-of-Flight
    • TOF

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

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    title = "Development and evaluation of an ultra-fast ASIC for future PET scanners using TOF-capable MPPC array detectors",
    abstract = "We developed a front-end ASIC for future PET scanners with Time-Of-Flight (TOF) capability to be coupled with 4×4 Multi-Pixel Photon Counter (MPPC) arrays. The ASIC is designed based on the open-IP project proposed by JAXA and realized in TSMC 0.35 μm CMOS technology. The circuit comprises 16-channel, low impedance current conveyors for effectively acquiring fast MPPC signals. For precise measurement of the coincidence timing of 511-keV gamma rays, the leading-edge method was used to discriminate the signals. We first tested the time response of the ASIC by illuminating each channel of a MPPC array device 3×3 mm2 in size with a Pico-second Light Pulsar with a light emission peak of 655 nm and pulse duration of 54 ps (FWHM). We obtained 105 ps (FWHM) on average for each channel in time jitter measurements. Moreover, we compensated for the time lag of each channel with inner delay circuits and succeeded in suppressing about a 700-ps lag to only 15 ps. This paper reports TOF measurements using back-to-back 511-keV signals, and suggests that the ASIC can be a promising device for future TOF-PET scanners based on the MPPC array.",
    keywords = "ASIC, Gamma-rays, Multi-Pixel Photon Counter, Positron emission tomography, Time-of-Flight, TOF",
    author = "T. Ambe and H. Ikeda and Jun Kataoka and H. Matsuda and T. Kato",
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    AU - Ambe, T.

    AU - Ikeda, H.

    AU - Kataoka, Jun

    AU - Matsuda, H.

    AU - Kato, T.

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    AB - We developed a front-end ASIC for future PET scanners with Time-Of-Flight (TOF) capability to be coupled with 4×4 Multi-Pixel Photon Counter (MPPC) arrays. The ASIC is designed based on the open-IP project proposed by JAXA and realized in TSMC 0.35 μm CMOS technology. The circuit comprises 16-channel, low impedance current conveyors for effectively acquiring fast MPPC signals. For precise measurement of the coincidence timing of 511-keV gamma rays, the leading-edge method was used to discriminate the signals. We first tested the time response of the ASIC by illuminating each channel of a MPPC array device 3×3 mm2 in size with a Pico-second Light Pulsar with a light emission peak of 655 nm and pulse duration of 54 ps (FWHM). We obtained 105 ps (FWHM) on average for each channel in time jitter measurements. Moreover, we compensated for the time lag of each channel with inner delay circuits and succeeded in suppressing about a 700-ps lag to only 15 ps. This paper reports TOF measurements using back-to-back 511-keV signals, and suggests that the ASIC can be a promising device for future TOF-PET scanners based on the MPPC array.

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