{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,22]],"date-time":"2026-05-22T11:06:16Z","timestamp":1779447976788,"version":"3.53.1"},"reference-count":30,"publisher":"AIP Publishing","issue":"5","license":[{"start":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T00:00:00Z","timestamp":1779321600000},"content-version":"vor","delay-in-days":20,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001711","name":"Schweizerischer Nationalfonds zur F\u00f6rderung der Wissenschaftlichen Forschung","doi-asserted-by":"publisher","award":["207312"],"award-info":[{"award-number":["207312"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Swiss Space Office"}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,5,1]]},"abstract":"<jats:p>We present a microchannel plate (MCP) detector for compact time-of-flight mass spectrometers (TOF-MS) that jointly optimizes the anode geometry and high-voltage AC-decoupling network for electrically floating operation. Undershoot-driven baseline artifacts and pulse broadening are addressed by a time-domain co-design of the anode geometry and decoupling network. The design is validated through a staged workflow that combines full-wave electromagnetic simulations, vector network analyzer measurements, circuit-level transient models, and end-to-end mass spectra. The resulting planar circular patch anode with anode-proximal decoupling confines fields, preserves peak amplitude, and suppresses post-pulse energy, leading to fast settling and minimal baseline wander. We show that the effective high-pass corner set by the decoupling capacitance directly governs undershoot decay and baseline recovery. Measurements in a representative TOF-MS test setup demonstrate waveguide-level pulse fidelity at a fraction of the mass and volume of heritage waveguide-based detectors, with residual ripples in the measured response originating from downstream cable and digitizer terminations rather than the detector itself. By limiting detector-induced temporal broadening and inter-peak baseline coupling, the design supports high mass resolution and dynamic range in miniaturized TOF-MS architectures. Variants of this planar flight-ready architecture are being implemented in several next-generation spaceborne TOF-MS instruments currently under development at the University of Bern.<\/jats:p>","DOI":"10.1063\/5.0313157","type":"journal-article","created":{"date-parts":[[2026,5,22]],"date-time":"2026-05-22T10:26:31Z","timestamp":1779445591000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Time-domain anode-decoupling co-design for a floating microchannel plate detector readout"],"prefix":"10.1063","volume":"97","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4619-6929","authenticated-orcid":false,"given":"Robin F.","family":"Bonny","sequence":"first","affiliation":[{"name":"Space Research and Planetary Sciences, Physics Institute, University of Bern , Bern,","place":["Switzerland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-3070-9002","authenticated-orcid":false,"given":"Lorenzo","family":"Obersnel","sequence":"additional","affiliation":[{"name":"Space Research and Planetary Sciences, Physics Institute, University of Bern , Bern,","place":["Switzerland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6549-3318","authenticated-orcid":false,"given":"Martin","family":"Rubin","sequence":"additional","affiliation":[{"name":"Space Research and Planetary Sciences, Physics Institute, University of Bern , Bern,","place":["Switzerland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2425-3793","authenticated-orcid":false,"given":"Andr\u00e9","family":"Galli","sequence":"additional","affiliation":[{"name":"Space Research and Planetary Sciences, Physics Institute, University of Bern , Bern,","place":["Switzerland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2603-1169","authenticated-orcid":false,"given":"Peter","family":"Wurz","sequence":"additional","affiliation":[{"name":"Space Research and Planetary Sciences, Physics Institute, University of Bern , Bern,","place":["Switzerland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9638-806X","authenticated-orcid":false,"given":"Rico G.","family":"Fausch","sequence":"additional","affiliation":[{"name":"Space Research and Planetary Sciences, Physics Institute, University of Bern , Bern,","place":["Switzerland"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2026,5,22]]},"reference":[{"key":"2026052206262770000_c1","doi-asserted-by":"publisher","first-page":"e4454","DOI":"10.1002\/jms.4454","volume":"55","year":"2020","journal-title":"J.\u00a0Mass Spectrom."},{"key":"2026052206262770000_c2","doi-asserted-by":"publisher","first-page":"100258","DOI":"10.1016\/j.greeac.2025.100258","volume":"13","year":"2025","journal-title":"Green Anal. 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