Abstract
Results obtained with a triple Gas Electron Multiplier (GEM) detector operated in pure CF 4 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 .
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
