Development of a triple GEM UV-photon detector operated in pure CF4 for the PHENIX experiment

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.

14 pages, 11 figures, Submitted to NIM A

References in corpus (1)

• Study of ion feedback in multi-GEM structures

Cited by in corpus (24)

• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Design, Construction, Operation and Performance of a Hadron Blind Detector for the PHENIX Experiment
• Advances in Gaseous Photomultipliers
• Thick GEM-like multipliers - a simple solution for large area UV-RICH detectors
• A Hadron Blind Detector for the PHENIX Experiment at RHIC
• GEM-based TPC with CCD Imaging for Directional Dark Matter Detection
• Optical and structural properties of CsI thin film photocathode
• Performance of a Quintuple-GEM Based RICH Detector Prototype
• Electromagnetic Probes
• Recent Investigations of Cascaded GEM and MHSP detectors
• Construction and Expected Performance of the Hadron Blind Detector for the PHENIX Experiment at RHIC
• First results of a large-area cryogenic gaseous photomultiplier coupled to a dual-phase liquid xenon TPC
• Photons and low-mass dileptons: results from PHENIX
• Development of a Time Projection Chamber Using Gas Electron Multipliers (GEM-TPC)
• Highlights from PHENIX - I
• Double Spin Asymmetry of Electrons from Heavy Flavor Decays in p+p Collisions at sqrt(s)=200 GeV
• Hadron Blind Cherenkov Counters
• Evolution of collectivity as a signal of quark gluon plasma formation in heavy ion collisions
• Low-mass dielectrons from the PHENIX experiment at RHIC
• A Hadron Blind Detector for the PHENIX Experiment
• Evolution and Recent Developments of the Gaseous Photon Detectors Technologies
• Probing dense and hot matter with low-mass dileptons and photons
• Dielectron production in Au$+$Au collisions at $\sqrt{s_{NN}}$=200 GeV
• $\varphi$- meson Production at RHIC energies using the PHENIX Detector