Control in EPICS for Conditioning Test Stands for ESS

CEA Irfu Saclay is involved as partner in the ESS accelerator construction through different work-packages: controls for several RF test stands, for cryomodule demonstrators, for the RFQ coupler test and for the conditioning around 120 couplers and the tests of 8 cryomodules. Due to the high number of components it is really crucial to automatize the conditioning. This paper describes how the control of these test stands was done using the ESS EPICS Environment and homemade EPICS modules. These custom modules were designed to be as generic as possible for reuse in future similar platforms and developments. They rely on the IOxOS FMC ADC3111 acquisition card, Beckhoff EtherCAT modules and the MRF timing system.Comment: 16th International Conference on Accelerator and Large Experimental Physics Control Systems, Oct 2017, Barcelona, Spain. pp.TUPHA20

Control in EPICS for Conditioning Test Stands for ESS

International audienceCEA Irfu Saclay is involved as partner in the ESS accelerator construction through different work-packages: controls for several RF test stands, for cryomodule demonstrators, for the RFQ coupler test and for the conditioning around 120 couplers and the tests of 8 cryomodules. Due to the high number of components it is really crucial to automatize the conditioning. This paper describes how the control of these test stands was done using the ESS EPICS Environment and homemade EPICS modules. These custom modules were designed to be as generic as possible for reuse in future similar platforms and developments. They rely on the IOxOS FMC ADC3111 acquisition card, Beckhoff EtherCAT modules and the MRF timing system

CEA Irfu EPICS Environment for the SARAF-LINAC Project

International audienceOur Institute CEA Saclay Irfu was in charge of the EPICS based control system platform for the accelerator projects Spiral2 at Ganil in Normandy and IFMIF/LIPAc at JAEA/Rokkasho (Japan). Our 3-year collaboration with ESS[*] has given us the opportunity to use new COTS hardware. We have made our CEA Irfu control platform evolve by retaining relevant and evolutive ESS solutions. Currently, CEA Irfu is in charge of the design, construction and commissioning at SNRC of the project SARAF-LINAC[**] (MEBT and Super Conducting Linac) including its control. This paper will present our proposition of architecture for the SARAF Linac using the new CEA Irfu hardware and software platforms

A State Machine Solution to Control Superconducting Cavities

International audienceFor the commissioning of the SPIRAL2 accelerating cavities at GANIL, a whole EPICS control-command system has been developed to start the radio-frequency (RF) system. The description of the RF constraints, the functions performed will be discussed to understand the operation of state machines that have been developed. The first results of the commissioning of the control-command of the cavities will be presented

IRFU EPICS Environment

International audienceThe 3 years collaboration with ESS* at Lund (Sweden) has given us the opportunity to use new COTS hardware and new tools. Based on that experience, we have developed the IEE (IRFU** EPICS Environment) by retaining relevant and scalable ESS solutions. This platform centralized several functionalities, fully installed by scripting, on a server that is running on a virtual machine. The functionalities are an EPICS environment and the root file system with the kernel for each embedded systems. In order to provide homogeneous EPICS modules between all collaborators, a template was designed and used as containers for new developments. Furthermore, a development and a production workflow is also proposed and strongly recommended. Due to the current responsibility of CEA IRFU to provide an EPICS platform for SARAF** at Tel Aviv (Israel), IEE was chosen as the standard platform for the whole accelerator. This paper will present the new standard IRFU EPICS Environment based on MTCA and virtual machines

RF Conditionning of the Spiral 2 CW RFQ

International audienceThe SPIRAL2 RFQ is designed to accelerate light and heavy ions with A/Q from 1 to 3 at 0.73 MeV/A. The nominal beam intensities are up to 5 mA CW for both proton and deuteron beams and up to 1 mA CW for heavier ions. The four-vane cavity is made with 5 1-meter long sections mechanically assembled, it works at 88 MHz and is powered up to 180 kW CW to achieve the nominal vane voltage of 113.7 kV for A/Q = 3 ions. This paper describes the RF conditioning of the RFQ at GANIL with the setting of its RF systems and cooling system used to tune the cavity resonance frequency

RF Commissioning of the SPIRAL2 RFQ in CW Mode and Beyond Nominal Field

International audienceThe SPIRAL2 RFQ was recently successfully commissioned at nominal voltage of 114 kV, corresponding to 1.65 Kilpatrick factor. The paper describes limitations of the RFQ main subsystems, cavity conditioning difficulties, as well as changes implemented in the LLRF and automatic procedures to simplify turn on and operation of the whole system

Results of CEA Tests of SARAF Couplers Prototypes

International audienceCEA is committed to delivering a Medium Energy Beam Transfer line and a superconducting linac (SCL) for SARAF accelerator in order to accelerate 5 mA beam of either protons from 1.3 MeV to 35 MeV or deuterons from 2.6 MeV to 40 MeV. The SCL consists in 4 cryomodules. The first two cryomodules host 6 and 7 half-wave resonator (HWR) low beta cavities (β = 0.09) at 176 MHz. The last two identical cryomodule will host 7 HWR high-beta cavities (β = 0.18) at 176 MHz. The maximal required power to be transmitted to the beam is 11.4 kW for high-beta cavity couplers. This document presents the results of the coupler tests and conditioning

Evolution Based on MicroTCA and MRF Timing System

International audienceFor many years our Institute CEA IRFU has had a sound experience in VME and EPICS. For the accelerator projects SPIRAL2 at Ganil in Normandy and IFMIF/LIPAc at JAEA/Rokkasho (Japan) the EPICS control systems were based on VME. For 5 years our Institute has been involved in several in-kind collaboration contracts with ESS. For the first contracts (ESS test stands, Source and LEBT controls) ESS recommended us to use VME based solutions on IOxOS boards. Our close collaboration with ESS, their support and the requirements for new projects have led us to develop a standardized hardware and software platform called IRFU EPICS Environment based on microTCA.4 and MRF timing system. This paper describes the advantages of the combination of these recent technologies and the local control system architectures in progress for the SARAF project

First Results of the IFMIF/EVEDA-SaTHoRI Tests

International audienceThe SaTHoRI test stand (Satellite de Tests Horizontal des Résonateurs IFMIF) aims to characterize a jacketed and fully dressed cavity with its coupler and tuner. A dedicated test cryostat has been manufactured and is connected to an existing horizontal test cryostat which provides the cryogenic coolant. A RF source ' provided by the IFMIF collaboration, one of the four RF sources which will be used for the cryomodule at Rokkasho ' has been installed and commissioned at CEA. This paper describes the test stand and presents the first results