In this paper we'll give a status report on the design of the front end electronic system which will be used for the EUSO photon detector.
For space, mass and power consumption constraints the system ...will be implemented developing an ASIC chip using a deep submicron technology.
Two complementary approaches will be described: a digital one (DFEE) and an analog one (AFEE).
The DFEE is able to count the single photoelectrons coming form the detector, store the numbers in a memory buffer and read them out after a trigger using a serial communication line.
The AFEE integrate the anode signals, store them in an analog memory and serially send all the values to a single output after a trigger for digitalization (external to the chip).
Since the approaches are complementary the idea is to put both of them in the final front end chip. An overview of the system is given together to the actual status of the design. Results from simulations are shown: the system is feasible and we think to implement some devices this year to extensively test the proposed solutions.
Phys.Lett.B615:153-159,2005 The MUNU detector was designed to study neutrino-electron elastic scattering
at low energy. The central component is a Time Projection Chamber filled with
CF4 gas, ...surrounded by an anti-Compton detector. The experiment was carried out
at the Bugey (France) nuclear reactor. In this paper we present the final
analysis of the data recorded at 3 bar and 1 bar pressure. Both the energy and
the scattering angle of the recoil electron are measured. From the 3 bar data a
new upper limit on the neutrino magnetic moment was derived. At 1 bar electron
tracks down to 150 keV were reconstructed, demonstrating the potentiality of
the experimental technique for future applications in low energy neutrino
physics.
Phys.Lett.B564:190-198,2003 The MUNU experiment was carried out at the Bugey nuclear power reactor. The
aim was the study of electron antineutrino-electron elastic scattering at low
energy. The ...recoil electrons were recorded in a gas time projection chamber,
immersed in a tank filled with liquid scintillator serving as veto detector,
suppressing in particular Compton electrons. The measured electron recoil
spectrum is presented. Upper limits on the neutrino magnetic moment were
derived and are discussed.
Nucl.Instrum.Meth.A482:408-424,2002 We report on the performance of a 1 m$^{3}$ TPC filled with CF$_{4}$ at 3
bar, immersed in liquid scintillator and viewed by photomultipliers. Particle
detection, ...event identification and localization achieved by measuring both the
current signal and the scintillation light are presented. Particular features
of $\alpha$ particle detection are also discussed. Finally, the ${54}$Mn
photopeak, reconstructed from the Compton scattering and recoil angle is shown.
The MUNU detector was designed to study neutrino-electron elastic scattering at low energy. The central component is a Time Projection Chamber filled with CF4 gas, surrounded by an anti-Compton ...detector. The experiment was carried out at the Bugey (France) nuclear reactor. In this paper we present the final analysis of the data recorded at 3 bar and 1 bar pressure. Both the energy and the scattering angle of the recoil electron are measured. From the 3 bar data a new upper limit on the neutrino magnetic moment was derived. At 1 bar electron tracks down to 150 keV were reconstructed, demonstrating the potentiality of the experimental technique for future applications in low energy neutrino physics.
The MUNU experiment was carried out at the Bugey nuclear power reactor. The aim was the study of electron antineutrino-electron elastic scattering at low energy. The recoil electrons were recorded in ...a gas time projection chamber, immersed in a tank filled with liquid scintillator serving as veto detector, suppressing in particular Compton electrons. The measured electron recoil spectrum is presented. Upper limits on the neutrino magnetic moment were derived and are discussed.
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