The test bench for the power amplifiers of the SPIRAL-2 SC LINAC

International audienceThe high current driver accelerator of the SPIRAL 2 project uses independently phased SC resonators working at 88 MHz. Solid state power amplifiers equipped with circulators are foreseen to drive the cavities with widely ranging conditions of beam loading. These power devices are developed by industrial companies and a test bench has been studied and manufactured to test the prototypes, to commission all the units before their installation on the accelerator and to be used to test repaired modules. Even if designed to be used at 88 MHz, the test bench can be used at higher frequencies too. The poster describes the test bench as well as the results on the first amplifiers bought for the cryomodule power tests

The radiation safety access control at GANIL and the RiB SPIRAL facility

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Development of a Safety Classified SystemWith LabView and EPICS

THCPA04, Poster SessionInternational audienceThe Spiral2 linear accelerator will drive high intensity beams, up to 5 mA and 200kW at linac exit. In tuning phase, or when not used by the experimental areas, thebeam will be stopped in a dedicated beam dump. To avoid excessive activation ofthis beamdump, in order to allow human intervention, a safety classified systemhad been designed to integrate the number of particles dropped in it within each24 hours time frame. For each kind of beam, a threshold will be defined andas soon as the threshold is reached a beam cut-off will be sent to the machineprotection system. This system, called SLAAF: System for the Limitation of theActivation of the beam dump (Arret Faisceau in French) rely on LabView andEPICS (Experimental Physics and Industrial Control) technology. This paper willdescribe the specification and development processes and how we dealt to meetboth functional and safety requirements using two technologies not commonlyused for safety classified systems

Overview of the GANIL Control Systems for the Different Projects Around the Facility

TUPHA016, Poster SessionInternational audienceThe GANIL facility is drastically extending its possibilities with new projects, soincreasing its capabilities in nuclear physics. The most significant one is the Spiral2installation based on a linear accelerator, then to be associated with the S3, NFSand DESIR new experimental rooms. Beside of the legacy home made controlsystem handling the original installation, Epics was chosen as the basic frameworkfor these projects. First, some control system components were used during preliminarybeam tests. In parallel, the whole architecture was designed while theorganization for future operation started to be considered; also, more structuredand sophisticated tools were developed and the first high level applications for thewhole machine tuning started to be tested, jointly with the current onsite beamcommissioning. Progression of the control system development is presented, fromthe first beam tests up to the whole Spiral2 commissioning. Then, according tothe new projects to cope with, some highlights are given concerning the relatedorganization as well as specific items and developments to be considered, takingbenefit from the Spiral2 control system feedback experience

Statuts et challenges de la mise en service de SPIRAL2.

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Irradiation control of the “SPIRAL1” target by measuring the ion beam intensity: “CICS” Project

International audienceIn order to obtain a more precise control on the irradiation of the targets of the “SPIRAL1” installation and to optimize the experiments schedule as well as the exploitation costs, a new criterion of safety is respected. This new safety criterion is the maximum dose (maximum number of ions stopped in the Spiral1 Target). To control this, an AQ system has been put in operation and more specifically a new device has been set up in order to measure the ion beam intensity and to calculate the number of particules per second. This value can then be integrated over time. This device mainly consists of two redundant instrumentations, which are acquired via a real time industrial controller. The accuracy of measurement is estimated taking into account the variation of beam, of the environment and of the installation. This system obtained the agreement of the French nuclear safety authorities and is operational since September 2007