Ceramic parallel plate chambers were irradiated with gamma rays and neutrons. Results on radiation resistance are presented after 60 Mrad gamma and 0.5 × 10
16 neutrons per cm
2 irradiation of the ...detector surface. Results of activation analysis of chambers made of two different ceramic materials are also presented.
Performance of a parallel plate volume calorimeter prototype Arefiev, A.; Bencze, Gy.L.; Bizzeti, A. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
09/1995, Letnik:
364, Številka:
1
Journal Article
Recenzirano
An iron/gas parallel plate volume calorimeter prototype, working in the avalanche mode, has been tested using electrons of 20 to 150 GeV/c momentum with high voltages varying from 5400 to 5600 V ...(electric fields ranging from 36.0 to 37.3 kV/ cm), and a gas mixture of CF
4/ CO
2 (80%/20%). The collected charge has been measured as a function of the high voltage and of the electron energy. The energy resolution has also been measured. Comparisons have been made with Monte Carlo predictions. Agreement between data and simulation allows the calculation of the expected performance of a full size calorimeter.
Electromagnetic secondaries in the detection of high energy muons Albajar, C.; Andlinger, M.; Arefiev, A. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
10/1995, Letnik:
364, Številka:
3
Journal Article
Recenzirano
Odprti dostop
The experiments at the planned 14 TeV proton-proton collider LHC will need a good identification and measurement of muons with energies of up to about 800 GeV. The production of electromagnetic ...secondaries by muons of energy from 10 to 300 GeV has been measured at the RD5 experiment at CERN using various detector types proposed for LHC experiments. It is demonstrated that the detectors can recognize the presence of individual hits from em secondaries, and that the muon measurement would be seriously compromised if these hits are not suppressed.
We present results on the measurements of the spark probability with CO2 and CF4/CO2 (80/20) mixture, at atmospheric pressure, using 1.5 mm gas gap parallel plate chambers, working at a gas gain ...ranging from 4.5 × 102 to 3.3 × 104.
The momentum and angular distributions of punchthrough muons have been measured after a 10 λ calorimeter using an iron toroid magnet with 1.5 T as spectrometer. The calorimeter was inside a variable ...magnetic field of 0 to 3 T. The incident momentum of the
π
− beam ranged from 20 to 300 GeV/
c. Measurements were also done at some beam momenta for
π
+, K
+ and p. The results are compared with Monte Carlo predictions. A parameterization for the momentum spectrum of punchthrough muons was derived from the data.
The 1994 running experience with the L3 Silicon Microvertex Detector is described; in particular we report on the detector performances observed during the year (namely the DAQ and detection ...efficiency and the signal to noise ratio) and on the reduction of the noise affecting the detector.
Nucl.Instrum.Meth.A465:306-317,2001 The Alpha Magnetic Spectrometer in a precursor version (AMS-01), was flown in
June 1998 on a 51.6 degrees orbit and at altitudes ranging between 320 and 390
km, on ...board of the space shuttle Discovery (flight STS-91). AMS-01 included an
Aerogel Threshold Cherenkov counter (ATC) to separate antiprotons from
electrons and positrons from protons, for momenta below 3.5 GeV/c. This paper
presents a description of the ATC counter and reports on its performances
during the flight STS-91.
The Alpha Magnetic Spectrometer in a precursor version (AMS-01), was flown in June 1998 on a 51.6 degrees orbit and at altitudes ranging between 320 and 390 km, on board of the space shuttle ...Discovery (flight STS-91). AMS-01 included an Aerogel Threshold Cherenkov counter (ATC) to separate antiprotons from electrons and positrons from protons, for momenta below 3.5 GeV/c. This paper presents a description of the ATC counter and reports on its performances during the flight STS-91.
Present status of Parallel Plate Chambers (PPC) is reviewed. After a description of this detector, results from tests concerning PPC efficiency uniformity, radiation hardness, and behaviour in ...electromagnetic calorimetry are presented. Some possible utilizations in LHC experiments are mentioned.
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