Detective Quantum Efficiency of the Timepix4 Hybrid Pixel Detector and its Application to Parallel-Beam Diffraction
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866918467216605184 |
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| author | Ding, Zhiyuan Dimova, Nina Barnard, Jonathan S. Crevatin, Giulio O'Ryan, Liam Plackett, Richard Bortoletto, Daniela Kirkland, Angus I. Gallagher-Jones, Marcus |
| author_facet | Ding, Zhiyuan Dimova, Nina Barnard, Jonathan S. Crevatin, Giulio O'Ryan, Liam Plackett, Richard Bortoletto, Daniela Kirkland, Angus I. Gallagher-Jones, Marcus |
| contents | The detective quantum efficiency (DQE) and normalised noise power spectrum (NNPS) of the Timepix4 hybrid pixel detector in event-driven mode in TEM have been measured at 100 kV and 200 kV. In a raw data readout mode, the zero-frequency DQE exceeds 0.9 at both 100 kV and 200 kV. At the Nyquist frequency, the DQE remains above 0.2 at 100 kV but drops close to zero at 200 kV. Initial parallel-beam diffraction data from a polycrystalline gold nanoparticle sample is reported which shows that at 200 kV Timepix4 can detect weak diffracted information beyond a 75 mrad half-angle. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_06857 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Detective Quantum Efficiency of the Timepix4 Hybrid Pixel Detector and its Application to Parallel-Beam Diffraction Ding, Zhiyuan Dimova, Nina Barnard, Jonathan S. Crevatin, Giulio O'Ryan, Liam Plackett, Richard Bortoletto, Daniela Kirkland, Angus I. Gallagher-Jones, Marcus Instrumentation and Detectors Materials Science The detective quantum efficiency (DQE) and normalised noise power spectrum (NNPS) of the Timepix4 hybrid pixel detector in event-driven mode in TEM have been measured at 100 kV and 200 kV. In a raw data readout mode, the zero-frequency DQE exceeds 0.9 at both 100 kV and 200 kV. At the Nyquist frequency, the DQE remains above 0.2 at 100 kV but drops close to zero at 200 kV. Initial parallel-beam diffraction data from a polycrystalline gold nanoparticle sample is reported which shows that at 200 kV Timepix4 can detect weak diffracted information beyond a 75 mrad half-angle. |
| title | Detective Quantum Efficiency of the Timepix4 Hybrid Pixel Detector and its Application to Parallel-Beam Diffraction |
| topic | Instrumentation and Detectors Materials Science |
| url | https://arxiv.org/abs/2603.06857 |