Conveners
11- Poster Session
- Samuel Meyroneinc (Institut Curie)
- Eiichi Takada (National Institute of Radiological Sciences)
The Canadian Light Source had first light in 2004 and has been shining since then. Achieving high operational reliability and availability is done through periodic monitoring of benchmark statistics and having a responsive organizational structure that can push these statistics in the right direction. Reliability is further enhanced through mitigating the risk of infrastructure failures and...
Particle accelerators exhibit complex behaviour emerging from the interaction of diverse machine systems, services, beam and environmental conditions. Since 2015 we have explored the fitness of probabilistic reliability engineering to particle accelerators. The investigation relies on the LHC as a use-case. Results indicate that the approach, already well established in manufacturing,...
The Large Hadron Collider (LHC) at CERN relies on more than 9000 superconducting magnets working since September 2008 in order to produce physics at high energy. The experience accumulated has shown up the frequency of electrical faults in the superconducting magnets, as well as their protection and instrumentation circuits. An internal collaboration group within CERN has carried out a first...
The basis for machine reliability investigation is a reliable operation statistic. At Petra III we recently implemented a new control system feature to generate the statistics automatically according to predefined rules. Here we describe the key components and tools: a beam operation calendar for definition of the planed machine status, the central logic to generate the actual machine state...
In our therapy center, accelerators (linacs and the synchrotron with the maximum energy of 400MeV/u) have been dedicated for carbon radiotherapy. The number of treated patients has exceeded 2,000 in this May.
The beam extracted from the synchrotron is transported to each treatment room and at upstream of the irradiation devices, a couple of dose monitor are located to control the dose...
A new concept for the calculation of the individual machine availability is introduced and will be applied for the next beamtime at GSI in 2018.
The calculation of the machine availability has never been done at GSI so far. The whole accounting was experiments-oriented. Hence, for the general statistics per beam-time, times were scaled with the number of concerned parallel experiments.
The...
The Shanghai Synchrotron Radiation Facility (SSRF) is an intermediate energy light source built at Zhang-Jiang Hi-Tech Park in Shanghai, China. The SSRF consists of a 432 m and 3.5 GeV storage ring with a 2.9 nm-rad emittance. The RF power and voltage required for storing the electron beam are provided by means of three SC cryomodules, each containing one 499.654MHz superconducting cavity. The...
The primary function of the Large Hadron Collider beam loss monitoring system is to protect the accelerator components from damage due to unacceptable beam losses. It acquires data from 4000 ionisation detectors distributed along the accelerator tunnel using radiation tolerant front-end electronics linked to surface electronics that perform continuous real-time processing. To connect these two...
The Collider-Accelerator Department’s Main Control Room Operators at Brookhaven National Laboratory have long used an alarm display as a first-line diagnostic for failures in our accelerator chain, as well as a tool to prevent or minimize downtime. Our method of monitoring and tracking alarms has evolved as the accelerator complex has grown, and with new systems being commissioned the burden...
FLD, “First Line Diagnosis”, is the ISIS fault diagnosis tool and technical knowledge base, which has undergone a recent system-wide upgrade. FLD 2.2, like previous versions, contains a wide range of online operational resources, from fault analysis flowcharts and repair procedures to risk assessments and video tutorials. This valuable information is curated by equipment specialists spanning...
PROSCAN is a proton irradiation facility for tumor treatment at the Paul Scherrer Institute in Switzerland; it is in operation since 2007. At the heart of the facility is COMET, a compact, super-conducting 250 MeV cyclotron. The facility serves three Gantries for generic tumor treatment, OPTIS 2 for eye cancer treatment and the proton irradiation facility (PIF) for radiation resistance tests...
Our own experience as well as that of other organizations is that it is possible to efficiently model the operational activities of groups with very different activities (from technical groups to scientific teams) with notions sumarized in six different types of process which are incidents, problems, service requests, requests for changes, changes, interventions. The aim of this modeling is to...
Overall machine reliability and availability are important objective of any accelerator and that depends on individual components reliability and skill of operators. However, the only presence of beam in a storage ring is not adequate enough to validate a reliable operation, but providing beam with desired quality is utmost important for the synchrotron radiation source serving a large and...
Often in well-established facilities, operational processes have not been reevaluated since their infancy. Some of these processes must be re-evaluated to increase performance, efficiency, and maintain reliability. Los Alamos Neutron Science Center (LANSCE) supports a fast neutron target that must be replaced every two years and aligned to the beam path. The previous alignment process required...
In 2016, Ghana's with assistance of International Atomic Energy Agency (IAEA) installed a 1.7MV 5SDH-2 Pelletron accelerator donated by Government of Netherlands through a technical co-operation agreement. A new beam line is installed on the 15degree port at the high energy end of the accelerator and connected to an RC-43 multipurpose chamber with IBA capability. This study provides a summary...
Empresarios Agrupados (EA) has been contributing to different EU funded projects regarding the reliability of high-power particle accelerators. Previous projects are the Eurotrans/Max project and studies currently continue with the activities for the Myrte project. For the Myrte project the reliability of the Myrrha Linac is taken into account from the early design stage, using relevant data...
A high degree of beam stability is essential for the smooth operation of an active scanning system as applied by the Heidelberg Ion Beam Therapy Centre (HIT). Amongst other parameters such as particle intensity and beam width, the feedback controlled beam position at the isocentre is particularly crucial as it has to meet a very tight tolerance band of ±1.0 mm. Due to this fact we pay special...
Maintenance and upgrades of the magnet power supplies are a critical consideration for our facility since the injector complex is already 10 years old and main of the storage ring equipment are approaching the same age.
This presentation first focuses on the main maintenance operations carried out on these systems, which represent more than 600 power converters. Two important reliability...
The existing GSI Main Control Room (MCR) is used for the accelerator complex operation since 20 years. In this time no major updates to its equipment and layout have been done. As its design, size and functionality cannot meet the requirements for running the upcoming FAIR accelerator facility, the planning for a modern fully digital control room is presently ongoing. The construction of a new...
At National Institute of Radiological Sciences (NIRS), carbon-ion radiotherapy has been carried out since June 1994. Recently, the world's first superconducting rotating-gantry was developed, and further installed in the new treatment facility at NIRS. This gantry equips ten superconducting magnets, and can transport carbon ions to an isocenter over irradiation angles of between ±180 degrees....
SOLEIL control system is running for 10 years on accelerators and beamlines. It has been designed with an object-oriented architecture both for software and hardware. Electronics devices have been standardized by functionalities allowing to build the control system with a “LEGO” approach. These electronics connected to the Tango framework are mainly based on industrial off-the-shelf devices: ...
The Shanghai Synchrotron Radiation Facility (SSRF) has opened to user for eight years, and the performance has been improved continuously to satisfy the users’ needs. The operation performance and the reliability of SSRF have been kept in high level to provide users sufficient and stable synchrotron radiation laser. The report will focus on the operation performance of SSRF in last operation...
The ALBA Synchrotron is a 3Gev, third generation synchrotron light source located near Barcelona (Spain). The accelerators are typically operated 6000 h a year, with closed to 80% of the time dedicated to provide beam for users. In addition to ensure a successful routine operation, the operators develop Python scripts and GUIs to simplify the Control Room procedures. These scripts are mainly...
Hefei Light Source (HLS) has successfully finished a major upgrade project and has been officially opened to users since January 2016. The planned operation time of the year 2016 for Hefei Light Source is 7008 hours and the planned user time is 4752 hours. The actual operation time and user time is 7009 hours and 5019 hours, respectively. The machine down time is much less than the planned...
Using HOM free superconducting cavities and high power solid state amplifiers, both developed in house, the SOLEIL storage ring 352 MHz RF system was quite innovative. After more than ten years of operation, it has proved itself; the assessment of the operational experience and of the upgrades which were brought in are reported here.
The Nuclear Sciences and Radiation-Matter Interaction Laboratory (SNIRM) at the Faculty of Physics of the University of Sciences and Technology Houari Boumediene (USTHB) is engaged in the acquisition of a tandem ion accelerator in the range of a few MeV. This facility will be located on the USTHB site. The characteristics of the accelerator have been defined and relate mainly to the...
After six years of operation, equipment located close to some vacuum chambers of the SOLEIL storage ring started to show unexpected damages due to radiation. It has been pointed out that, around the so called “quadrupole” vacuum chambers that intercept upstream dipole synchrotron radiation, X-rays are emitted. Their energy is too high to be significantly attenuated by the 3mm aluminum of which...
This project relates to the restoration of the copper electrode of a resonator at GANIL. It makes following important problems of corrosion of the copper pipes.
- Refurbishment of the DEE of a cavity in cooper for a compact cyclotron
- Thermal computation
- Implementation
- Manufacturing
- Three axe control
- RF qualifications
- Commissionning
The Japan Proton Accelerator Research Complex (J-PARC) is a multipurpose facility for the physical experiments. The J-PARC facilities were constructed in the Tokai site of the Japan Atomic Energy Agency (JAEA). The accelerator complex consists of a linac, a 3 GeV Rapid-Cycling Synchrotron (RCS), and a 50 GeV Main Ring synchrotron (MR). RCS delivers the beams to the neutron target and MR, and...
The SPIRAL1 facility at GANIL produces radioactive ions beams (RIB) since 2001. Target Ion Source Systems (TISS) employed are exposed to severe dose rates, requiring both simple and radiation hard technologies. Moreover, the production is performed in a Nuclear Installation Plant, where all the processes must cope with constraining safety rules. Once the TISS is irradiated by primary beams of...
The 'Facility for Anti-Proton and Ion Research' (FAIR) which is presently under construction, extends and supersedes the existing GSI. In July 2016 began longest shutdown GSI has ever seen. The main work package is the civil construction project GAF (GSI Anbindung an FAIR, Link of GSI to FAIR) which comprises additional shielding of SIS18,fire protection measures, as well as the connection of...
Taiwan Photon Source (TPS) is a newly deployed 3 GeV synchrotron light source. Reliability design have been considered at design phase. Adopt right technology, adequate redundancy, enough safety margin are used to ensure acceptable reliability. However, some subsystems inherent operate in reliable way but some not due to various reasons. The light source was operate for dry run, beam-line...
The high frequency power provided by high-voltage modulator designed with vacuum tubes, serves to accelerate the electron beam in the section formed by copper cavities. Some of the remaining power is dissipated in the cavities and metallic components of the modulator such as PFN, tubes, power supplies.
These components are cooled by a circulation of water. The importance of regulating the...
Overall since starting to use RCFA on all trips we have seen our annual MTBF increase from around 24 hrs to above 100 hrs.
However we have mixed experience with reactions to requiring a root cause failure analysis is performed on all major systems failures on Diamond. Ideally we get clear identification of the causes and a practical set of actions to address them, but this is not always the...
TRIUMF is Canada's national laboratory for particle and nuclear physics and accelerator-based science. The facility produces and delivers a variety of beams to targets and experiment stations through beam lines. The total length of beam lines operating at TRIUMF is about 700 meters. The vacuum in these beam lines is supported by turbo pumps backed by scroll pumps. There are more than 65 scroll...
SOLARIS is a National Synchrotron Research Center built at the Jagiellonian University Campus in Krakow, Poland. It is a green field project that was funded from the EU Structural Funds with the total budget of 50 M€ covering the cost of the building, people, 600 MeV linac with the transfer line, 1.5 GeV storage ring with the circumference of 96 m and two beamlines. The machine was constructed...
SOLEIL is the national French synchrotron, in operation since 2007: 27 beamlines provide photons to the users more than 5000 hours. For this instrument that operates a 24/7 beam and whose availability rate is of over 98%, the issue of maintenance is essential. First, it is necessary to ensure optimal operating condition because the equipment is becoming older and older. Then, preventive...
Synchrotron SOLEIL is the 3rd generation French synchrotron light source. In operation since 2007, it provides photon beams to the 29 beamlines in operation whose intensity can reach 500 mA according to the filling (5 different modes are available).
After early age failures, the efforts to improve the reliability of the equipment and the availability of the beam contributed to bring us close...
Most important ingredients of reliability in particle-therapy accelerators like HIMAC are reproducibility of a treatment beam as well as prevention of unexpected down time.
In order to realize reliable operations of medical accelerators, we take trend data of many parameters. For example, water flow of magnets has been readjusted during biweekly maintenance according to recent trend data, so...
Highly reliable systems rely on methodical procedure during the design phase, production and deployment. This paper presents a methodology that covers production quality, reception tests and field analysis on the example of the mass produced accelerator control system for the LHC (FGClite). The production quality analysis of each board consists of functional tests based on the PXI test...
