A new type of resistive plate chamber: The multigap RPC Cerron Zeballos, E; Crotty, I; Hatzifotiadou, D ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
05/1996, Letnik:
374, Številka:
1
Journal Article
Recenzirano
Odprti dostop
This Letter describes the multigap resistive plate chamber (RPC). The goal is to obtain a much improved time resolution, keeping the advantages of the wide gap RPC in comparison with the conventional ...narrow gap RPC (smaller dynamic range and thus lower charge per avalanche which gives higher rate capability and lower power dissipation in the gas gap).
HADES is a secondary generation experiment operated at GSI Darmstadt with the main goal to study dielectron production in proton, pion and heavy ion induced reactions. The first part of the HADES ...mission is to reinvestigate the puzzling pair excess measured by the DLS collaboration in C + C and Ca + Ca collisions at 1
A
GeV. For this purpose dedicated measurements with the C + C system at 1 and 2
A
GeV were performed. The pair excess above a cocktail of free hadronic decays has been extracted and compared to the one measured by DLS. Furthermore, the excess is confronted with predictions of various model calculations.
The Multigap Resistive Plate Chamber (MRPC), operated in avalanche mode, has excellent time resolution with high efficiency and is a candidate for the Time-of-Flight detector for the STAR experiment ...at the RHIC. Since 1998 we have been developing MRPCs appropriate for STAR. In this paper we present the latest results obtained during the year 2000. We measured a time resolution of 50
ps with an efficiency of 98% with MRPCs composed of 6 gas gaps of
220
μm
.
The wide gap resistive plate chamber Crotty, I; Cerron Zeballos, E; Lamas Valverde, J ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
06/1995, Letnik:
360, Številka:
3
Journal Article
Recenzirano
Odprti dostop
The resistive plate chamber (RPC) has good time and position resolution; these factors (coupled to its simple construction) make it an attractive candidate for muon trigger systems at future ...colliders. However, operated in spark mode, the RPC has severe rate problems that make it unusable above 10 Hz/cm
2. We have previously published our results concerning the operation of the RPC in spark and in avalanche mode; we have shown that the rate limit can be increased to 150 Hz/cm
2 if the RPC is operated in avalanche mode. Here, we discuss the performance of chambers with 6 and 8 mm gas gaps (compared to the more usual 2 mm gap). We outline the reasons for this choice, and also discuss anode versus cathode strip readout. We have measured the efficiency versus flux, and also show that an enhanced rate limit can be obtained if only a small region of the chamber is exposed to the beam (spot illumination). Finally we have tested the performance of chambers constructed with other materials for the resistive plate and compare it to chambers constructed with our preferred plastic, melamine laminate.
Heavy ion physics programme in CMS Baur, G.; Bedjidian, M.; E.Bonner, B. ...
The European physical journal. C, Particles and fields,
07/2004, Letnik:
32, Številka:
S2
Journal Article
Pure avalanche mode operation of a 2 mm gap resistive plate chamber Cerron Zeballos, E; Crotty, I; Hatzifotiadou, D ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
09/1997, Letnik:
396, Številka:
1
Journal Article
Recenzirano
It is necessary to operate the resistive plate chamber (RPC) in avalanche mode to obtain high efficiency at elevated particle fluxes. We examine this mode of operation with a 2 mm gap RPC using gas ...mixtures containing C
2F
4H
2 and C
2F
5H. In order to explain the data we propose that the avalanche growth is strongly limited by space charge effects.
A very large multigap resistive plate chamber Cerron-Zeballos, E; Choi, J; Hatzifotiadou, D ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
09/1999, Letnik:
434, Številka:
2
Journal Article
Recenzirano
We have built and tested a very large Multigap Resistive Plate Chamber (MRPC). We discuss the suitability of the multigap RPC for the construction of large area modules. We give details of the ...construction technique and results from a scan across the surface of the chamber. We also report on the implementation of ‘half-strip resolution’, where we improve the spatial resolution by a factor 2 without increasing the number of read-out channels.
Performance of a Multigap RPC prototype for the LHCb Muon system Colrain, P; Corti, G; de Paula, L ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/2000, Letnik:
456, Številka:
1
Journal Article
Recenzirano
Odprti dostop
Several technologies are under consideration for the muon system of the LHCb experiment. Resistive Plate Chambers (RPCs) are one of the favourite candidates for the outer areas where the particle ...fluxes are expected to be at most some kHz/cm
2. This work describes the results obtained with a Multigap RPC prototype under various beam conditions at the CERN facilities.
PDF
