dorsal/arxiv
View SchemaIon-induced effects in GEM & GEM/MHSP gaseous photomultipliers for the UV and the visible spectral range
| Authors | A. Breskin, D. Mormann, A. Lyashenko, R. Chechik, F. D. Amaro, J. M. Maia, J. F. C. A. Veloso, J. M. F. dos Santos |
|---|---|
| Categories | |
| ArXiv ID | physics/0502132 |
| URL | https://arxiv.org/abs/physics/0502132 |
| DOI | 10.1016/j.nima.2005.08.005 |
| Journal | Nucl.Instrum.Meth.A553:46-52,2005 |
Abstract
We report on the progress in the study of cascaded GEM and GEM/MHSP gas avalanche photomultipliers operating at atmospheric pressure, with CsI and bialkali photocathodes. They have single-photon sensitivity, ns time resolution and good localization properties. We summarize operational aspects and results, with the highlight of a high-gain stable gated operation of a visible-light device. Of particular importance are the results of a recent ion-backflow reduction study in different cascaded multipliers, affecting the detector's stability and the photocathode's liftime. We report on the significant progress in ion-blocking and provide first results on bialkali-photocathode aging under gas multiplication.
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"abstract": "We report on the progress in the study of cascaded GEM and GEM/MHSP gas\navalanche photomultipliers operating at atmospheric pressure, with CsI and\nbialkali photocathodes. They have single-photon sensitivity, ns time resolution\nand good localization properties. We summarize operational aspects and results,\nwith the highlight of a high-gain stable gated operation of a visible-light\ndevice. Of particular importance are the results of a recent ion-backflow\nreduction study in different cascaded multipliers, affecting the detector\u0027s\nstability and the photocathode\u0027s liftime. We report on the significant progress\nin ion-blocking and provide first results on bialkali-photocathode aging under\ngas multiplication.",
"arxiv_id": "physics/0502132",
"authors": [
"A. Breskin",
"D. Mormann",
"A. Lyashenko",
"R. Chechik",
"F. D. Amaro",
"J. M. Maia",
"J. F. C. A. Veloso",
"J. M. F. dos Santos"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1016/j.nima.2005.08.005",
"journal_ref": "Nucl.Instrum.Meth.A553:46-52,2005",
"title": "Ion-induced effects in GEM \u0026 GEM/MHSP gaseous photomultipliers for the UV and the visible spectral range",
"url": "https://arxiv.org/abs/physics/0502132"
},
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