quadrupole

Paper	Title	Other Keywords	Page
MOPA02	LHC@FNAL – A New Remote Operations Center at Fermilab	controls, monitoring, site, instrumentation	23
	W. F. Badgett, K. B. Biery, E. G. Gottschalk, S. R. Gysin, M. O. Kaletka, M. J. Lamm, K. M. Maeshima, P. M. McBride, E. S. McCrory, J. F. Patrick, A. J. Slaughter, A. L. Stone, A. V. Tollestrup, E. R. Harms Fermilab, Batavia, Illinois Hadley, Nicholas J. Hadley, S. K. Kunori UMD, College Park, Maryland M. Lamont CERN, Geneva
	Commissioning the LHC accelerator and experiments will be a vital part of the worldwide high-energy physics program beginning in 2007. A remote operations center, LHC@FNAL, has been built at Fermilab to make it easier for accelerator scientists and experimentalists working in North America to help commission and participate in operations of the LHC and experiments. We report on the evolution of this center from concept through construction and early use. We also present details of its controls system, management, and expected future use.
	Slides
MOPB02	XAL Status	target, SNS, beam-losses, feedback	34
	C. K. Allen, S. M. Cousineau, J. Galambos, J. A. Holmes, A. P. Shishlo, Y. Zhang, A. P. Zhukov, T. A. Pelaia ORNL, Oak Ridge, Tennessee P. Chu SLAC, Menlo Park, California
	XAL is a Java framework for developing accelerator physics applications for the commissioning and operation of the Spallation Neutron Source. It was designed to be extensible and has evolved to support ongoing accelerator operations. In particular, the on-line model and applications have been extended to support the Ring. Core XAL design features eased the extension from Linac to Ring support and in some cases made it transparent. We discuss the recent advances and future directions in XAL and the current efforts to open the project to broader collaboration.
	Slides
WPPA01	A Novel PXI-Based Data Acquisition and Control System for Stretched Wire Magnetic Measurements for the LHC Magnets: An Operation Team Proposal	controls, power-supply, diagnostics, monitoring	316
	K. Priestnall, V. Chohan CERN, Geneva S. Shimjith, A. Tikaria BARC, Mumbai
	The SSW system developed by Fermilab, USA, has been the main device heavily used since 2004 at CERN for certain required measurements of all the LHC Quadrupole assemblies as well as certain measurements for the LHC Dipoles. All these structures also include various small and large corrector magnets. A novel system is proposed, based on three years of operational experience in testing the LHC Magnets on a round-the-clock basis. A single stretched wire system is based on the wire cutting the magnetic flux, producing the electrical potential signal. Presently this signal is integrated with a VME-based data acquisition system and is used to analyse the magnetic field. The acquisition and control is currently done via a SUN workstation communicating between different devices with different buses and using different protocols. The new system would use a PXI based data acquisition system with an embedded controller; the different devices are replaced by PXI-based data acquisition and control cards using a single bus protocol and on one chassis. The use of windows based application software would enhance the user friendliness, with overall costs of the order of 10 KCHF.
WPPB14	Development of a Signal Processing Board for Spill Digital Servo System for Proton Synchrotron	extraction, controls, feedback, resonance	430
	T. Adachi, R. Muto, H. Sato, H. Someya, M. Tomizawa, H. Nakagawa KEK, Ibaraki T. I. Ichikawa, K. Mochiki Musasi Institute of Technology, Instrumentation and Control Laboratory, Tokyo A. Kiyomichi JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken K. Noda NIRS, Chiba-shi
	A prototype data processing board for a digital spill control system has been made. The system is considered to be used to control proton beams in 50-GeV synchrotron rings of J-PARC. The prototype circuit board consists of four ADCs, two FPGAs, a DSP, memories, and four DACs. The four inputs of the processing board are assumed to be an intensity signal of the proton beam in the accelerator rings, a digital gate signal that indicates the duration of beam extraction, a spill signal that shows the intensity of the extracted proton beam, and a reserved signal. The resolution and maximum sampling speed of the ADC are 16 bit and 2.5 Msps, respectively. One of the FPGAs is Vartex-2 1000-4C, and a real-time power spectrum analyzer will be implemented. It analyzes the spill signal every 1ms or shorter period. The analyzed result reflects optimum parameters used in spill control by servo. The DSP takes charge of these digital servo processing. The DACs with 16-bit resolution drive control signals for magnet currents. The system has another FPGA for communication between the processing board and network. MicroBlase CPU core is implemented, and uCLinux is installed to use EPICS.
RPPA17	A Physics Based Approach for Magnet Control in a Booster and Storage Ring	booster, controls, storage-ring, wiggler	553
	S. F. Mikhailov, Y. K. Wu, S. M. Hartman FEL/Duke University, Durham, North Carolina
	At Duke University, a booster synchrotron was recently commissioned as part of the HIGS upgrade. For the ramping magnet power supply controls, we followed an approach previously implemented for the Duke Storage Ring controls. The high-level operator interface is presented in terms of the physics quantities of the accelerator, i.e., the effective focusing strength of the magnets. This approach allows for a tighter integration of the control system with physics modeling programs and facilitates machine studies. The approach also simplifies operations of the accelerators by presenting an interface nearly independent of machine energy. For the booster, nonlinearities of the magnets, a result of its extremely compact footprint, are incorporated in to the low-level software while providing a high level of machine tunability. For the storage ring, feed forward compensations built on the effective strength of the magnets simplify tuning of the machine over a wide range of electron beam energies or wiggler settings. This approach provides for a good match to the diverse operational modes supported by the Duke Storage Ring.
ROPB04	Beam Commissioning Software and Database for J-PARC LINAC	lattice, linac, controls, alignment	698
	C. K. Allen LANL, Los Alamos, New Mexico H. Ikeda Visual Information Center, Inc., Ibaraki-ken H. Sakaki, G. B. Shen, H. Takahashi, H. Yoshikawa JAEA, Ibaraki-ken H. Sako JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
	A beam commissioning software system based on a relational database (RDB) has been developed for the J-PARC LINAC. We developed two high-level software frameworks, JCE and XAL. JCE (Java Commissioning Environment) based on a scripting language SAD script has been developed in Java with device control, monitoring, online modelling and data analysis functions. XAL has been developed initially by SNS and developed for J-PARC. A commissioning database system has been developed to configure commonly these two frameworks, for model geometry, EPICS control, and calibration parameters. A server for unit conversion of magnet power supplies has also developed for the commissioning software. Commissioning applications for RF tuning, transverse matching, orbit correction, beam-based calibration, beam monitor controls have been developed using the two framework and successfully applied for beam tuning. We report on the status of development for the commissioning software system.
	Slides