Micromegas in a bulk

Giomataris, I.; Oliveira, Rui de; Andriamonje, S.; Aune, S.; Charpak, G.; Colas, P.; Fanourakis, G.; Ferrer, E.; Giganon, A.; Rebourgeard, P.; Salin, P.

doi:10.1016/j.nima.2005.12.222

Cited by 374 publications

(252 citation statements)

References 13 publications

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“…Once entering in the measurement chamber, the beam's particles lose their energy by ionising the gas. The collection of ionization electron induces an electric current on the anode of a micromegas-type detector [9]. The charges collected on the micromegas are proportional to the ionization energy released in the gas by the particle.…”

Section: The Comimac Facilitymentioning

confidence: 99%

Ionization Quenching Factor measurement of 1 keV to 25 keV protons in Isobutane gas mixture

et al. 2017

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Abstract. The French Institute for Radiation protection and Nuclear Safety (IRSN) is providing reference neutron fluence energy distribution at its standard monoenergetic neutron fields, produced at the AMANDE facility. The neutron energy is assessed by measuring the recoil nuclei energy in a µTPC detector, the LNE-IRSN/MIMAC detector. The knowledge of the ionization quenching factor (IQF) is fundamental to determine the kinetic energy of the recoil nuclei. For some various gases and pressures, discrepancies of about 15% were observed between IQF calculations using the SRIM software and experimental measurements. No data are available for the iC4H10 + 50% CHF3 gas mixture which are used for measurements from a few keV up to 565 keV neutron energies in the µTPC detector. The experimental determination of the IQF is of primary importance to provide reference neutron fluence energy distribution. After a short description of the experimental set-up, this paper presents the first results of the IQF measurements in a iC4H10 + 50% CHF3 gas mixture in the energy range 1 keV -25 keV.

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Section: The Comimac Facilitymentioning

confidence: 99%

Ionization Quenching Factor measurement of 1 keV to 25 keV protons in Isobutane gas mixture

et al. 2017

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“…Each TPC consists of a box containing a gas, consisting of Ar (95%), CF 4 (3%), and iC 4 H 10 (2%), with an electric field between the central cathode and the side anodes where drift charge is read out with micromesh gas detectors (micromegas) [37]. The TPC provides three-dimensional (3D) track reconstruction, momentum measurement, and sign selection from track curvature in the magnetic field, and particle identification (PID) from dE=dx in the gas.…”

Section: The Off-axis Nd280 Detectormentioning

confidence: 99%

Measurement of theνμcharged-current quasielastic cross section on carbon with the ND280 detector at T2K

Abe¹,

Adam²,

Aihara³

et al. 2015

Phys. Rev. D

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This paper reports a measurement by the T2K experiment of the ν μ charged current quasielastic (CCQE) cross section on a carbon target with the off-axis detector based on the observed distribution of muon momentum (p μ ) and angle with respect to the incident neutrino beam (θ μ ). The flux-integrated CCQE cross section was measured to be hσi ¼ ð0.83 AE 0.12Þ × 10 −38 cm 2 . The energy dependence of the CCQE cross section is also reported. The axial mass, M QE A , of the dipole axial form factor was extracted assuming the Smith-Moniz CCQE model with a relativistic Fermi gas nuclear model. Using the absolute (shape-only) p μ -cos θ μ distribution, the effective M

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“…A light integrated read-out electronics using APV25-S1 chip [7] is developed, and the new "bulk" Micromegas technology [8] has been chosen to build those detectors, as it produces more reliable chambers.…”

Section: Project For a New Pixelized Micromegas Detectormentioning

confidence: 99%

New pixelized Micromegas detector with low discharge rate for the COMPASS experiment

Neyret

2010

IEEE Nuclear Science Symposuim &Amp; Medical Imaging Conference

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New Micromegas (Micro-mesh gaseous detectors) are being developed in view of the future physics projects planned by the COMPASS collaboration at CERN. Several major upgrades compared to present detectors are being studied: detectors standing five times higher luminosity with hadron beams, detection of beam particles (flux up to a few hundred of kHz/mm², 10 times larger than for the present Micromegas detectors) with pixelized read-out in the central part, light and integrated electronics, and improved robustness. Two solutions for a reduction of the impact of discharges have been studied, with Micromegas detectors using resistive layers and using an additional GEM foil. The performance of such detectors has been measured during beam test periods. A large size prototype with nominal active area and pixelized read-out has been produced and installed in the COMPASS spectrometer in 2010. In 2011 prototypes featuring an additional GEM foil, as well as a resistive prototype, were tested in similar conditions and preliminary results from those detectors are very promising. We present here the project and report on its status, in particular the performance of large size prototypes with an additional GEM foil.

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Micromegas in a bulk

Cited by 374 publications

References 13 publications

Ionization Quenching Factor measurement of 1 keV to 25 keV protons in Isobutane gas mixture

Ionization Quenching Factor measurement of 1 keV to 25 keV protons in Isobutane gas mixture

Measurement of theνμcharged-current quasielastic cross section on carbon with the ND280 detector at T2K

New pixelized Micromegas detector with low discharge rate for the COMPASS experiment

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