Commissioning of the DAΦNE beam test facility

Mazzitelli, G.; Ghigo, A.; Sannibale, F.; Valente, P.; Vignola, G.

doi:10.1016/j.nima.2003.07.017

Cited by 131 publications

(56 citation statements)

References 3 publications

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“…The big open bore allows tests of single H6553 assemblies both with field lines orthogonal or parallel to the PMT axis up to ∼ 700 Gauss. The magnetic field was measured via a gaussmeter 13 , with an accuracy better than 1%. Tests were done usually with a signal corresponding to a MIP.…”

Section: Pmts Behavior In Magnetic Fieldmentioning

confidence: 99%

“…The Laboratori Nazionali di Frascati (LNF) DAΦNE Beam Test Facility (BTF) is a beam transfer line designed to deliver electrons or positrons mainly for detector calibration purposes [13]. Tests at the BTF were done to choose the scintillator to be used, cross-check the design of the lightguides, assess the counter intrinsic time resolution and measure the number of produced photoelectrons (N p.e.…”

Section: Tests On Single Counters At the Btf Facilitymentioning

confidence: 99%

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The design and commissioning of the MICE upstream time-of-flight system

Bertoni

Blondel

Bonesini

et al. 2010

Nuclear Instruments and Methods in Physics Research Section A:

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In the MICE experiment at RAL the upstream time-of-flight detectors are used for particle identification in the incoming muon beam, for the experiment trigger and for a precise timing (σ t ∼ 50 ps) with respect to the accelerating RF cavities working at 201 MHz. The construction of the upstream section of the MICE time-of-flight system and the tests done to characterize its individual components are shown. Detector timing resolutions ∼ 50 − 60 ps were achieved. Test beam performance and preliminary results obtained with beam at RAL are reported.(submitted to Nuclear Instruments and Methods A) * Corresponding author: M. Bonesini, E-mail address: maurizio.bonesini@mib.infn.it + permanent address: Department of Physics, Oxford University, UK, Published by SIS-Pubblicazioni Laboratori Nazionali di FrascatiThe MICE experiment [1] at RAL (see figure 1 for a schematic layout) aims at a systematic study of a section of a cooling channel of a neutrino factory (νF ) [2]. The 5.5 m long cooling section consists of three liquid Hydrogen absorbers and eight 201 MHz RF cavities encircled by lattice solenoids.Different neutrino factory designs require a muon cooling factor from 2 to 16, over a ∼ 100 m distance. For a cooling section prototype of affordable size, a cooling factor ∼ 10% at most may be expected. A precision of ∼ 10% on the design of the whole cooling channel implies emittance measurements at a level of 0.1% on the cooling cell prototype, thus excluding conventional emittance measurement methods, that have errors around 10%.A method based on single particle measurements has been envisaged, to obtain such a level of precision. Particles are measured before and after the cooling section by two magnetic spectrometers complemented by time-of-flight (TOF) detectors. For each particle x, y, t, p x , p y , E coordinates are measured. In this way, for an ensemble of N particles, the input and output emittances may be determined accurately. The upstream MICE time-of-flight systemIn the MICE experiment, precision timing measurements are required to relate the time of the incoming beam muons to the phase of the accelerating field in each RF cavity and simultaneously for particle identification (PID) by a TOF method. Three time-of-flight detectors (TOF0, TOF1, TOF2) are foreseen. The last two (TOF1 and TOF2) are at the entrance and the exit of the MICE cooling channel; the first one (TOF0) instead is placed about 10 m upstream of its entrance. Figure 1 shows a layout of the full MICE cooling channel with the foreseen positions of the TOF detectors. The upstream TOF detectors (TOF0, TOF1) must separate the pion contamination of the muon beam at low momenta (below ∼ 210 MeV/c) and are used for the experiment trigger. All TOF detectors are used to determine the time coordinate (t) in the measurement of the emittance.The TOF stations share a common design based on two planes of fast one-inch scintillator counters along X/Y directions (to increase measurement redundancy) read at both edges by R4998 Hamamatsu fast photomult...

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Section: Pmts Behavior In Magnetic Fieldmentioning

confidence: 99%

Section: Tests On Single Counters At the Btf Facilitymentioning

confidence: 99%

The design and commissioning of the MICE upstream time-of-flight system

Bertoni

Blondel

Bonesini

et al. 2010

Nuclear Instruments and Methods in Physics Research Section A:

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“…The Frascati BTF [6] is an electron transfer line leading off of the DAΦNE linac. The linac accelerates positrons and electrons to maximum energies of 550 and 800 MeV, respectively, producing 10-ns pulses with a repetition rate of 50 Hz.…”

Section: The Beam Test Facility (Btf)mentioning

confidence: 99%

The large-angle photon veto system for the NA62 experiment at CERN

Ambrosino

Angelucci

Antonelli

et al. 2010

IEEE Nuclear Science Symposuim &Amp; Medical Imaging Conference

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The NA62 experiment at CERN SPS aims at measuring ∼100 events of the very rare decay K + → π + νν (BR∼8.5x10 −10 ). It poses stringent requirements on PID capabilities to reject the overwhelming π + π 0 (63%) and K μ2 (21%) backgrounds. The photon veto system must provide a rejection factor of 10 −8 on π 0 decays. As a main γ veto detector, the NA48 liquid Kripton calorimeter will be used. To have full geometrical acceptance up to 50 mr, a set of 12 veto stations should be placed along the vacuum decay tank, with an inefficiency <10 −4 in a wide energy range (200 MeV-35 GeV). Good energy resolution (∼10% at 1 GeV) for threshold definition, good time resolution (∼1 ns) to be used at the trigger level, sensitivity to MIP for calibration with muons of the beam halo are needed. A moderate segmentation in the azimuthal angle is desirable, for reducing the counting rate and providing information on the γ direction. We performed an intense R&D program on three solutions: "spaghetti "calorimeter, lead/scintillator sandwich calorimeter, and original re-use of the existing barrel of the OPAL lead-glass e.m. calorimeter. Studies have been performed at the Frascati BTF beam and all three meet the efficiency requirements. The final choice uses a peculiar radial arrangement of lead-glasses in rings. Front-end electronics has been designed to cover the tree orders of magnitude of the signal, contributing to the trigger, and integrated in the general TDAQ, while keeping low cost and simplicity. The first five full veto stations have been constructed. Two tests have been done and problems found fixed. We will discuss about R&D for the technology choice, LAV construction, test beams results and simulation performance. c 2011 CERN, for the benefits of NA62 collaboration. Published by Elsevier BV. Selection and/or peer-review under responsibility of the organizing committee for TIPP 2011.

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“…The realization of such a beam turns out to be a challenging endeavour. The Beam Test Facility (BTF) in the DAΦNE collider complex at the INFN Laboratori Nazionali of Frascati (LNF) [7], was the elected site for realizing the tagged photon beam exploiting bremsstrahlung in a thin target and performing the calibration. Preliminary results on the calibration of the AGILE ST has been presented in [8] and will be subject of a future paper.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a tagged γ-ray beam line at the DAΦNE Beam Test Facility

Cattaneo

Argan

Boffelli

et al. 2012

Nuclear Instruments and Methods in Physics Research Section A:

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* Corresponding author * * Now at LAL-CNRS, F-91898 Orsay, France Email address: Paolo.Cattaneo@pv.infn.it (P.W. Cattaneo ) February 14, 2018 At the core of the AGILE scientific instrument, designed to operate on a satellite, there is the Gamma Ray Imaging Detector (GRID) consisting of a Silicon Tracker (ST), a Cesium Iodide Mini-Calorimeter and an Anti-Coincidence system of plastic scintillator bars. The ST needs an on-ground calibration with a γ-ray beam to validate the simulation used to calculate the energy response function and the effective area versus the energy and the direction of the γ rays. A tagged γ-ray beam line was designed at the Beam Test Facility (BTF) of the INFN Laboratori Nazionali of Frascati (LNF), based on an electron beam generating γ rays through bremsstrahlung in a position-sensitive target. The γ-ray energy is deduced by difference with the post-bremsstrahlung electron energy [1]- [2]. The electron energy is measured by a spectrometer consisting of a dipole magnet and an array of position sensitive silicon strip detectors, the Photon Tagging System (PTS). The use of the combined BTF-PTS system as tagged photon beam requires understanding the efficiency of γ-ray tagging, the probability of fake tagging, the energy resolution and the relation of the PTS hit position versus the γ-ray energy. This paper describes this study comparing data taken during the AGILE calibration occurred in 2005 with simulation. Preprint submitted to Elsevier

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Commissioning of the DAΦNE beam test facility

Cited by 131 publications

References 3 publications

The design and commissioning of the MICE upstream time-of-flight system

The design and commissioning of the MICE upstream time-of-flight system

The large-angle photon veto system for the NA62 experiment at CERN

Characterization of a tagged γ-ray beam line at the DAΦNE Beam Test Facility

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