The high granularity and large solid angle detection array EXPADES

The EXPADES (EXotic PArticle DEtection System) detector array consists of 16 Double Side Silicon Strip Detectors (DSSSD) with active areas of 64 x 64 mm(2), arranged in 8 Delta E (40/50 mu m)-E (300 mu m) telescopes. All detector faces are segmented into 32 x 2-mm wide strips, ensuring a 2 x 2 mm(2) pixel configuration. Eight ionization chambers can be alternatively used as Delta E stages or, if needed, as an additional third layer for more complex triple telescopes. The signals from silicon Delta E layers and from ionization chambers are read by standard electronics, while innovative 32-channel ASIC chips are employed for the readout of the E stages. The results of off-line tests with alpha sources and from the first in-beam experiment with a O-17 beam are presented.

Construction techniques and performances of a full size prototype Micromegas chamber for the ATLAS muon spectrometer upgrade

A full scale prototype of a Micromegas precision tracking chamber for the upgrade of the ATLAS detector at the LHC Collider has been built between October 2015 and April 2016. This paper describes in detail the procedures used in constructing the single modules of the chamber in various INFN laboratories and the final assembly at the Frascati National Laboratories (LNF). Results of the chamber exposure to the CERN H8 beam line in June 2016 are also presented. The performances achieved in the construction and the results of the test beam are compared with the requirements, which are imposed by the severe environment during the data-taking of the LHC foreseen for the next years

Dedicated scanner for laboratory investigations on cone-beam CT/SPECT imaging of the breast

We describe the design, realization and basic tests of a prototype Cone-Beam Breast Computed Tomography (CBBCT) scanner, combined with a SPECT head consisting of a compact pinhole gamma camera based on a photon counting CdTe hybrid pixel detector. The instrument features a 40 μm focal spot X-ray tube, a 50 μm pitch flat panel detector and a 1-mm-thick, 55 μm pitch CdTe pixel detector. Preliminary imaging tests of the separate CT and gamma-ray units are presented showing a resolution in CT of 3.2 mm-1 at a radial distance of 50 mm from the rotation axis and that the 5 and 8 mm hot masses (99mTc labeled with a 15:1 activity ratio with respect to the background) can be detected in planar gamma-ray imaging with a contrast-to-noise ratio of about 4

The high granularity and large solid angle detection array EXPADES

The EXPADES (EXotic PArticle DEtection System) detector array consists of 16 Double Side Silicon Strip Detectors (DSSSD) with active areas of 64 7 64 mm2, arranged in 8 \u394E (40/50 \u3bcm)\u2013E (300 \u3bcm) telescopes. All detector faces are segmented into 32 7 2-mm wide strips, ensuring a 2 7 2 mm2 pixel configuration. Eight ionization chambers can be alternatively used as \u394E stages or, if needed, as an additional third layer for more complex triple telescopes. The signals from silicon \u394E layers and from ionization chambers are read by standard electronics, while innovative 32-channel ASIC chips are employed for the readout of the E stages. The results of off-line tests with alpha sources and from the first in-beam experiment with a 17O beam are presented

The high granularity and large solid angle detection array EXPADES

The EXPADES (EXotic PArticle DEtection System) detector array consists of 16 Double Side Silicon Strip Detectors (DSSSD) with active areas of 64 7 64 mm2, arranged in 8 \u394E (40/50 \u3bcm)-E (300 \u3bcm) telescopes. All detector faces are segmented into 32 7 2-mm wide strips, ensuring a 2 7 2 mm2 pixel configuration. Eight ionization chambers can be alternatively used as \u394E stages or, if needed, as an additional third layer for more complex triple telescopes. The signals from silicon \u394E layers and from ionization chambers are read by standard electronics, while innovative 32-channel ASIC chips are employed for the readout of the E stages. The results of off-line tests with alpha sources and from the first in-beam experiment with a 17O beam are presented.\ua9 2013 Elsevier B.V. All rights reserved

EXPADES: A new detection system for charged particles in experiments with RIBs

A new detection apparatus, named EXPADES (EXotic PArticle DEtection System), has been expressly designed to be used in nuclear physics experiments involving exotic beams and devoted to the study of nuclear reactions (scattering, direct reactions, breakup. . .) at energies around the Coulomb barrier. It consists of double-side segmented silicon detectors arranged in a compact configuration around the target. A very large solid angle, a wide angular range, high granularity and a highly miniaturized readout electronics, based on a new production commercial ASIC chipset, are the main features of the system

R&D results from the NOE scintillating fiber calorimeter

The development of the NOE calorimeter, based on scintillating fiber technology, has undergone four years of intense R&D activity. Measurements of light attenuation and time resolution have been carried out on a variety of commercially available scintillating fibers. Both these parameters are important for the optimization of the design of the NOE calorimeter. Experimental results on the fiber attenuation length and light yield make us confident on the possibility to build a 8 x 8 m(2) cross-section calorimeter without noticeable loss of signal. The time resolution is resulted to be of the order of 1 ns, sufficient for up/down discrimination in the final calorimeter setup, by means of the time-of-flight method. Several tests performed to optimize the elementary cell of the calorimeter are also described. (C) 2001 Elsevier Science B.V. All rights reserved