dorsal/arxiv
View SchemaDevelopment of a triple GEM UV-photon detector operated in pure CF4 for the PHENIX experiment
| Authors | A. Kozlov, I. Ravinovich, L. Shekhtman, Z. Fraenkel, M. Inuzuka, I. Tserruya |
|---|---|
| Categories | |
| ArXiv ID | physics/0309013 |
| URL | https://arxiv.org/abs/physics/0309013 |
| DOI | 10.1016/j.nima.2003.12.018 |
| Journal | Nucl.Instrum.Meth. A523 (2004) 345-354 |
Abstract
Results obtained with a triple GEM detector operated in pure CF4 with and without a reflective CsI photocathode are presented. The detector operates in a stable mode at gains up to 10^4. A deviation from exponential growth starts to develop when the total charge exceeds ~ 4 10^6 e leading to gain saturation when the total charge is ~ 2 10^7 e and making the structure relatively robust against discharges. No aging effects are observed in the GEM foils after a total accumulated charge of ~ 10 mC/cm^2 at the anode. The ion back-flow current to the reflective photocathode is comparable to the electron current to the anode. However, no significant degradation of the CsI photocathode is observed for a total ion back-flow charge of ~ 7 mC/cm^2.
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"abstract": "Results obtained with a triple GEM detector operated in pure CF4 with and\nwithout a reflective CsI photocathode are presented. The detector operates in a\nstable mode at gains up to 10^4. A deviation from exponential growth starts to\ndevelop when the total charge exceeds ~ 4 10^6 e leading to gain saturation\nwhen the total charge is ~ 2 10^7 e and making the structure relatively robust\nagainst discharges. No aging effects are observed in the GEM foils after a\ntotal accumulated charge of ~ 10 mC/cm^2 at the anode. The ion back-flow\ncurrent to the reflective photocathode is comparable to the electron current to\nthe anode. However, no significant degradation of the CsI photocathode is\nobserved for a total ion back-flow charge of ~ 7 mC/cm^2.",
"arxiv_id": "physics/0309013",
"authors": [
"A. Kozlov",
"I. Ravinovich",
"L. Shekhtman",
"Z. Fraenkel",
"M. Inuzuka",
"I. Tserruya"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1016/j.nima.2003.12.018",
"journal_ref": "Nucl.Instrum.Meth. A523 (2004) 345-354",
"title": "Development of a triple GEM UV-photon detector operated in pure CF4 for the PHENIX experiment",
"url": "https://arxiv.org/abs/physics/0309013"
},
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