{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T16:43:46Z","timestamp":1793205826524,"version":"4.5.0"},"reference-count":25,"publisher":"International Union of Crystallography (IUCr)","issue":"1","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"funder":[{"name":"Brookhaven Science Associates LLC","award":["DE-SC0012704"],"award-info":[{"award-number":["DE-SC0012704"]}]}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["J Synchrotron Rad","J Synchrotron Radiat"],"accepted":{"date-parts":[[2025,11,24]]},"published-print":{"date-parts":[[2026,1,1]]},"abstract":"<jats:p>\n                    The novel design and evaluation on the NSLS-II beamline of the 3FI application-specific integrated circuit (ASIC) bump-bonded to a simple, planar, 2D segmented silicon sensor are presented. The ASIC was developed for full-field fluorescence spectral X-ray imaging (3FI). It is a small-scale prototype that features a square array of 32\u2005\u00d7\u200532 pixels, and the size of the pixels is 100\u2005\u00b5m\u2005\u00d7\u2005100\u2005\u00b5m. The ASIC was implemented in a 65\u2005nm CMOS integrated circuit fabrication process. Each pixel incorporates a charge-sensitive amplifier, a shaping filter, a discriminator, a peak detector and a sample-and-hold circuit, allowing detection of events and storage of signal amplitudes. The system operates in a frameless event-driven readout mode, outputting analog values for threshold-triggered events, allowing high-speed multi-element X-ray fluorescence data acquisition. The 3FI ASIC achieves per-channel spectrometric performance at a power consumption of only 200\u2005\u00b5W per pixel, with nearly all dissipation confined to the analog front-end. An energy resolution is measured at the level of 308\u2005eV full width at half-maximum (FWHM) at 8.04\u2005keV (Cu\n                    <jats:italic>K<\/jats:italic>\n                    \u03b1), and 138\u2005eV FWHM at 3.69\u2005keV (Ca\n                    <jats:italic>K<\/jats:italic>\n                    \u03b1). This per-pixel capability makes the prototype suitable for\n                    <jats:italic>in situ<\/jats:italic>\n                    trace element microanalysis in biological and environmental studies. Moreover, the frameless architecture of the detector is designed to address limitations of conventional X-ray fluorescence microscopy, which typically requires mechanical scanning, by enabling continuous high-throughput data acquisition in future full-field implementations.\n                  <\/jats:p>","DOI":"10.1107\/s1600577525010501","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T10:05:39Z","timestamp":1764929139000},"page":"154-161","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":3,"title":["Evaluation of an event-driven 3FI ASIC for spectroscopic X-ray detection with synchrotron radiation"],"prefix":"10.1107","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1059-6376","authenticated-orcid":true,"given":"Piotr","family":"Maj","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02ex6cf31","id-type":"ROR","asserted-by":"publisher"}],"department":["Instrumentation 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