Mr
Bruno PUCCIO
(CERN)
14/04/2011, 16:00
Session 19
The correct functioning of the Machine Interlocks (MI) is vital for safe operation throughout all operational phases of the Large Hadron Collider (LHC). The two main components composing the MI are the LHC Beam Interlock System and the LHC Powering interlock systems, both for super conducting and normal conducting magnets, The first one is highly reliable and fast. It relays Permit signals...
Mr
Laurent HARDY
(European Synchrotron Radiation Facility)
Oral
Reliability concept was born with world war II. The first reliability models were developed to improve the V2 rockets. Until the years 70s, accelerator reliability was not even considered. Increasing the energy and intensity were the only goals. After the 70s, with the first Users and experimenters, the need of reliability became important (medical accelerator, X-ray sources, etc). Reliability...
Dr
Don McGilvery
(Australian Synchrotron)
Oral
At The Australian Synchrotron we routinely deliver around 98% of scheduled beam time to users. As many internal causes of beam loss have been eliminated, the major cause of lost time is now due to beam loss from incoming power disturbances.
A project has been underway for the last 18 months to gain a greater understanding of the failure patterns of different systems of the accelerator and...
Mr
William Colocho
(SLAC National Lab.)
Oral
The Linac Coherent Light Source (LCLS) X-ray FEL, in operation since spring 2009, is in the middle of its 3rd user run. Availability and hardware reliability performance of the machine are reviewed. Work under way that is expected to improve availability and reliability is described. The high flexibility of the parameter space that the machine can deliver; as well as the multiplicity of...
Dr
Jay Flanz
(Massachusetts General Hospital)
Oral
The probability of a system performing as expected, when it is needed, depends on proper design, appropriate implementation and rigorous maintenance. Measuring this system performance requires that performance goals have to be defined. These are based on clinical, operational and technical desires. Data characterising the system functioning, or metrics, have to be defined and analysed. The...
Mr
Jon Bonofiglio
(National Superconducting Cyclotron Laboratory)
Oral
The National Superconducting Cyclotron Laboratory (NSCL) is a world leader in rare isotope research and nuclear science education. Located on the campus of Michigan State University, NSCL scientists and researchers employ a wide range of tools for conducting advanced research in fundamental nuclear science, nuclear astrophysics, and accelerator physics. Robust preventive and corrective...
Mr
Adrian Johnson
(Diamond Light Source Ltd)
Oral
A remote control, mobile, thermal imaging camera platform has been developed to survey and investigate the Diamond Light Source accelerator components when beam is present. The platform consists of a small battery powered, PC operated, wheeled base unit onto which a height adjustable camera mount has been fitted. Visible light and thermal imaging cameras are located on the camera mount. The...
Dr
Andreas Luedeke
(Paul Scherrer Institut, Department for Large Research Facilities)
Oral
Normally it is expected for scientific publications to publish the evaluated data together with statistical evaluation of the data. This allows the community to reproduce and verify the data analysis. It allows as well to broaden the analysis and to compare the results from different publications. There are of course exceptions, for example when the data is considered to be confidential like...
Dr
Donald Glass
(St James Software)
, Mr
Laurent Hardy
(European Synchrotron Radiation Facility)
, Dr
Nicholas Hurley
(St James Software)
Oral
This paper will focus on the evolution of E-logbooks and the features and benefits specific to the Accelerator Industry.
Initially,we will give a history of the status of modern E-Logbooks using real-life results from the industry. We will then discuss the future trend of E-Logbooks both in the Particle Accelerator Business as well as in other industries.
Finally, we will be putting forward...
Mr
Ciprian Plostinar
(Rutherford Appleton Laboratory)
Oral
The demand for high power, high intensity and high reliability proton linacs has been driven by a variety of applications from spallation sources to ADSRs. Several machines have recently been commissioned or are currently being designed and built worldwide. Historically, to golden rule of thumb to avoid activation has been to limit the losses to 1W/m. However, the growing requirements for the...
Dr
Cherrill Spencer
(SLAC National Accelerator Laboratory)
Oral
Whether one is using electromagnets in a small accelerator to produce synchrotron radiation or in a very large accelerator to produce high energy particles for basic research experiments, or in a proton therapy medical device, their availability is paramount to the overall success of the machine. Availability is defined as the average ratio of the time that the system or component is usable...
Mrs
Katy Foraz
(CERN)
, Mr
Peter Sollander
(CERN)
Oral
The start of LHC operation after ten years of installation and commissioning introduced new actors and new procedures within the accelerator complex operation. It revealed the need to ease the information flow across the different teams in charge of intervention co-ordination: corrective and preventive maintenance, upgrades and consolidation interventions needing technical validation,...
Mr
Paul Sampson
(Brookhaven National Laboratory)
Oral
Many factors affecting accelerator performance are associated with maintenance, repair and other support activities. At Brookhaven National Laboratory, the Collider Accelerator Department (CAD) is home to several accelerators including the Relativistic Heavy Ion Collider (RHIC). At CAD, the overall organization and coordination of these tasks are the responsibility of the Maintenance and...
Mr
Ludwig Dahl
(GSI Helmholtzzentrum Darmstadt, Germany)
Oral
The GSI UNILAC (Universal Linear Accelerator) is in operation since 1974. By different enhancements its performance was increased from a machine accelerating only one heavy ion species beam to a specified energy to a pulse-to-pulse switching machine. Up to three different ion species beams generated in three ion source terminals are accelerated to different energies up to 12 MeV/u in a defined...
Mr
hiroshi uchiyama
(Accelerator Engineering Corporation)
Oral
At HIMAC synchrotron, the status of device is monitored to ensure the reliability of beam for therapy by operators and control systems. Although we are monitoring a current output of each power supplies of dipole and quadrupole magnets, we have been aware that there is a difference between the monitoring current and the actual magnetic fields through information from a beam. However, we could...
Mr
Jonathan Warren
(SLAC National Accelerator Laboratory)
Oral
Prior to this year, the SLAC National Accelerator Laboratory employed paper-based Radiation Safety Work Control Forms (RSWCFs) to manage work on radiation safety systems for the linear accelerator facility. In January, we introduced an online version of the RSWCFs that was developed using Oracle Application Express (APEX) and is accessible from any computer connected to the SLAC internal...
Dr
Ralf Eichhorn
(TU Darmstadt, S-DALINAC)
Oral
Since the 1980s, the superconducting electron accelerator S-DALINAC was built and continuously improved at the Technical University of Darmstadt mainly by students in the framework of their master and Ph.D. thesis. With only limited technical assistance, this created operational challenges to face ever since: many subsystems have a poor design, some operate below specifications while others...
Dr
Joachim Grillenberger
(Paul Scherrer Institut)
Oral
The Paul Scherrer Institute operates a 590 MeV high intensity proton accelerator with a beam current of up to 2.4 mA. During the past years an availability of around 90% of the facility was achieved. The high beam power of 1.3 MW demands a careful operation to protect the accelerator complex. We will report on the operational experience with the facility and the measures taken to allow a safe...
Dr
George Dodson
(Spallation Neutron Source, Oak Ridge National Laboratory)
Oral
Reliability Theory provides many practical applications and tools to assist with important questions which arise from the initial deign to the eventual steady state operation particle accelerators. These include:
• Reliability Modeling as a tool for evaluating system performance
o In the design phase what are the tradeoffs of cost vs. reliability performance?
o In the...
Asim Araz
(Siemens)
, Dr
Thomas Sieber
(Siemens)
Oral
The Siemens Company (SAG) is currently building and commissioning particle therapy facilities for cancer treatment at Marburg and Kiel in Germany and at Shanghai / China. The accelerator of these facilities consists basically of a combination of Electron Cyclotron Resonance Ion Sources (ECRIS) and Radio Frequency Quadrupole (RFQ) together with Interdigital - H (IH) accelerators as injector for...
Dr
Andrea Denker
(Helnholtz-Zentrum Berlin)
Oral
Since 1998, the accelerator complex at the Helmholtz-Zentrum Berlin (HZB), the former Hahn-Meitner-Institut, is employed for proton therapy of ocular melanomas. For this reason, an increase of the up-times of the accelerator, which were in the order of about 90 %, was desirable. Up-grades and refinements were made on all sub-systems: sources, injectors, RF systems, power supplies, and vacuum....
Dr
Naruhiko SAKAMOTO
(RIKEN Nishina Center)
Oral
This paper describes our effort to achieve reliable operation of RF system for Cyclotrons at RIKEN Radio Isotope Beam Factory (RIBF).
The accelerator complex of RIBF which consists of superconducting ring cyclotron (SRC), intermedeiate-stage ring cyclotron (IRC) and Fixed-frequency booster ring cyclotron (FRC) provides heavy ion beams like uranium with a energy of 345 MeV/u.
Beam loss...
Mr
Fernando Rafael
(SLAC National Accelerator Laboratory)
Oral
SLAC National Accelerator Laboratory is home to a two-mile linear accelerator—the longest in the world. Originally a particle physics research center, SLAC is now a multipurpose laboratory for astrophysics, photon science, accelerator and particle physics research. SLAC mission as National Laboratory seeks to be a leader in exploring frontier questions of science that are important to the...
Mr
Adam Jorgensen
(St James Software)
, Dr
James Lane
(St James Software)
Oral
Physicists and engineers often end up writing their own software for the particle accelerator industry. While this has the benefit that their practical know how gained in the industry is immediate, they undergo the trouble of finding out the difficulties of software development through trial and error.
We present an expose of tools and methodology for improving software reliability from a...
Mr
Mikael Pettersson
(Uppsala University - TSL)
Oral
The beams from the Gustaf Werner cyclotron at TSL are today mainly used for proton therapy, in collaboration with the hospital, and for irradiation tests of semiconductors and electronic equipment, for industrial users. This situation means that reliability and quality of the delivered beams are of high importance. In this article we discuss how to achieve this. We will look at different...
Mr
Joel Trewhella
(Australian Synchrotron)
Oral
Automated software and routines aim to replace the human operator manual control. As the Australian Synchrotron increases reliable automation, the paradoxical issue whether automation is a benefit or hindrance has risen.
This paper discusses the ways in which automation may actually magnify problems rather than eliminate them. The more reliable and advanced the automated system is, the...
Dr
Andreas Luedeke
(Paul Scherrer Institut, Department for Large Research Facilities)
Oral
Electronic logbooks have progressively replaced paper logbooks in the past decade.
Many logbook applications, mostly web based, have been presented at various workshops and conferences. So all has been said and done?
Modern electronic logbooks come with a large number of features, to be configured according to the needs of the customers.
But how to use those features efficiently for the...
Dr
George Dodson
(Spallation Neutron Source, Oak Ridge National Laboratory)
Oral
The Spallation Neutron Source accelerator systems consist of a ~1GeV H-, pulsed, superconducting Linac, with ~1000 turn H- injection stripping accumulator ring and single-turn extraction to a Hg target. It has operated recently for extended periods at ~1MW with ~ 90% availability. The approach to reliable operation at the SNS will be discussed including RAMI Modeling, Management Information...
Dr
Lixin Yin
(Shanghai Institute of Applied Physics)
, Dr
Ming Gu
(Shanghai Institute of Applied Physics)
Oral
The Shanghai Synchrotron Radiation Facility (SSRF) has built and operation for more than two years. The availability was close to 96% at last year. There are more than 650 DC and pulsed power supplies for magnets. The failure ratio of power supply is 9% of total failure time. This paper will presents the power supply operational statistics and describes fault analysis.
Dr
Samuel Meyroneinc
(Institut Curie – Centre de Protonthérapie d’Orsay)
Oral
From its early stages, Particle Therapy (PT) has combined the treatment activity with the developments of the treatment devices. The new expectations in term of number of patients to be treated (so in term of reliability) and in term of conformity (so in term of quality assurance and regulations to follow) asks the legitimacy of this combined approach.
The Institut Curie-CPO has now...
Dr
Lixin Yin
(Shanghai Institute of Applied Physics)
Oral
SSRF, a 3.5GeV, 3.9nm.rad synchrotron light source, has been operated for users since May, 2009. The accelerator was operated in decay mode with machine availability of 95.7% and MTBF of 40hours. Most of the beam downs are triggered by the interlock in the super-conducting RF system. The main contribution to the MDT is the failure of LHe cryogenic system. The power supply system for magnets...
