Merging several separate data acquisition systems at GANIL

International audienceThe Grand Accélérateur National d'Ions (GANIL) as a National User's facility must answer to the problems of synchronization for the coupling of resident and external acquisition systems. For this a solution made up of a C-size VXI electronics called CENTRUM and a software named MERGER was adopted. The technique used for synchronization is based on the distribution of a 32-bit event number or a 48-bit timestamp. The tagged events sent by the various acquisition systems on the network are assembled by MERGER in a single event and sent for the analysis and storag

SIRIUS is a state-of-the-art detector system for nuclear decay spectroscopy that will be mounted at the focalplane of S3 (Super Separator Spectrometer), which is part of the new SPIRAL2 facility at GANIL, Caen in France. Such a systemrequires high performance as it is dedicated to the study of very exotic nuclei. It is the result of collaboration between GANILCSNSM, IRFU, and IPHC It is composed of a succession of detectors (Trackers, Silicon detector DSSD and Tunnel plus anarray of five clover Germanium detectors). This set-up is mounted in a compact geometry. The energy measurement variesfrom 50 keV to over 500 MeV with high precision (2 x 10-3) at low energies and 1 % for the detection of heavy ions. A majorchallenge has been the development of new electronics with a very large dynamic range maintaining an adequate energyresolution for the measured particles (with energies from a few hundred keV up to 500 MeV).

International audienceSIRIUS is a state-of-the-art detector system for nuclear decay spectroscopy that will be mounted at the focal plane of S$^3$ (Super Separator Spectrometer), which is part of the new SPIRAL2 facility at GANIL, Caen in France. Such a systemrequires high performance as it is dedicated to the study of very exotic nuclei. It is the result of collaboration between GANILCSNSM, IRFU, and IPHC It is composed of a succession of detectors (Trackers, Silicon detector DSSD and Tunnel plus anarray of five clover Germanium detectors). This set-up is mounted in a compact geometry. The energy measurement variesfrom 50 keV to over 500 MeV with high precision (2 x 10$^{-3}$) at low energies and 1 % for the detection of heavy ions. A majorchallenge has been the development of new electronics with a very large dynamic range maintaining an adequate energyresolution for the measured particles (with energies from a few hundred keV up to 500 MeV)

MUST2: A new generation array for direct reaction studies

NESTER SEP ACCWe have developed a new telescope array, dedicated to the study of direct reactions of exotic nuclei on light targets in inverse kinematics. This device, called MUST2, is briefly described, and the results of the first tests performed with an alpha source and Ni beams at 10 and 75 MeV/u on a CDH target are presented

Musett: A segmented Si array for Recoil-Decay-Tagging studies at VAMOS

Expérience GANIL/EXOGAM/VAMO

Demonstrator Detection System for the Active Target and Time Projection Chamber (ACTAR TPC) project

The design, realization and operation of a prototype or “demonstrator” version of an active target and time projection chamber (ACTAR TPC) for experiments in nuclear physics is presented in detail. The heart of the detection system features a micromegas gas amplifier coupled to a high-density pixelated pad plane with square pad sizes of 2  ×  2 mm 2 . The detector has been thoroughly tested with several different gas mixtures over a wide range of pressures and using a variety of sources of ionizing radiation including laser light, an α -particle source and heavy-ion beams of   24 Mg and   58 Ni accelerated to energies of 4.0 MeV/u. Results from these tests and characterization of the detector response over a wide range of operating conditions will be described. These developments have served as the basis for the design of a larger detection system that is presently under construction

GET: A generic electronics system for TPCs and nuclear physics instrumentation

General Electronics for TPCs (GET) is a generic, reconfigurable and comprehensive electronics and data-acquisition system for nuclear physics instrumentation of up to 33792 channels. The system consists of a custom-designed ASIC for signal processing, front-end cards that each house 4 ASIC chips and digitize the data in parallel through 12-bit ADCs, concentration boards to read and process the digital data from up to 16 ASICs, a 3-level trigger and master clock module to trigger the system and synchronize the data, as well as all of the associated firmware, communication and data-acquisition software. An overview of the system including its specifications and measured performances are presented.status: publishe

GET: A generic electronics system for TPCs and nuclear physics instrumentation

General Electronics for TPCs (GET) is a generic, reconfigurable and comprehensive electronics and data-acquisition system for nuclear physics instrumentation of up to 33792 channels. The system consists of a custom-designed ASIC for signal processing, front-end cards that each house 4 ASIC chips and digitize the data in parallel through 12-bit ADCs, concentration boards to read and process the digital data from up to 16 ASICs, a 3-level trigger and master clock module to trigger the system and synchronize the data, as well as all of the associated firmware, communication and data-acquisition software. An overview of the system including its specifications and measured performances are presented