RuPAC-2010 - List of Keywords (controls)

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controls

Paper	Title	Other Keywords	Page
TUPSA005	A 12 GHz Pulse Compressor and Components for CLIC Test Stand	coupling, vacuum, simulation, recirculation	44
	S. V. Kuzikov, A. A. Bogdashov, G. G. Denisov IAP/RAS, Nizhny Novgorod K. M. Schirm, I. Syratchev CERN, Geneva A. A. Vikharev Omega-P, Inc., New Haven, Connecticut
	The X-band power test stand needed for preprocessing and testing of key CLIC RF components is being installed in the test facility CTF3. The test stand includes several 12 GHz XL5 klystrons (50 MW, 1.5 mks) and a pulse compressor of the SLED-I type to obtain over 120 MW peak power at 230 ns pulse length. A compact compressor of this type based on TE01-TE02 beating wave in high Q-factor compressor’s cavities has been designed, produced, and tested at low power level. For testing accelerating structures and so-called "CLIC recirculation principle" of its operation several -3 dB couplers and variable power attenuators were also produced and tested.

TUPSA006	Experiment on RF Heating of the Copper Cavity - the Imitator of the CLIC High-Gradient Accelerating Structure	electron, vacuum, radiation, induction	47
	S. N. Sedykh, E. V. Gorbachev, A. K. Kaminsky, N. I. Lebedev, E. A. Perelstein, N. V. Pilyar, T. V. Rukoyatkina, V. V. Tarasov JINR, Dubna, Moscow Region S. V. Kuzikov, N. Yu. Peskov, M. I. Petelin, A. A. Vikharev IAP/RAS, Nizhny Novgorod
	The facility for joint experiments of JINR-IAP RAS has been commissioned to investigate the lifetime dependence of the CLIC high-gradient accelerating structure* on the surface damage by repetitive high-power RF pulses. The facility is based on the 30 GHz JINR free-electron maser, which uses an electron beam of the induction linear accelerator LIU-3000 *. Intermediate optical observations of the central ring allowed us to control the process of the damage evolution. The first damage of the copper surface have been observed after 16000 pulses with the pulse heating of 240°C. After 63000 pulses the damage of the surface of the oxygen-free copper cavity became strong enough to cause regular breakdowns inside the test cavity. I. Wilson – CERN AB-2004-100, CLIC Note 617, Dec. 2004, 12pp. ** A. V.Elzhov et al. - Nucl. Instr. and Meth., A, Vol. A528, 2004, pp.78-82.

TUPSA029	Pickup Beam Measurement System at the VEPP-2000 Collider	injection, collider, betatron, pick-up	101
	Yu. A. Rogovsky, E. A. Bekhtenev BINP SB RAS, Novosibirsk
	This paper reviews the present state of electromagnetic beam position monitors (pickups) at VEPP-2000 collider. It includes descriptions of position monitors, typical interfaces for these monitors and their system characteristics (resolution, stability, bandwidth and problems or limitations) are discussed. The paper also reviews several types of diagnostic measurements using beam position monitors which are useful in improving accelerator operations.

TUPSA030	Beam Measurements With Visible Synchrotron Light on VEPP-2000 Collider	collider, diagnostics, vacuum, electron	104
	Yu. A. Rogovsky, D. E. Berkaev, A. N. Kyrpotin, I. Nesterenko, A. L. Romanov BINP SB RAS, Novosibirsk
	This paper describes beam diagnostics at VEPP-2000 collider, based on visible synchrotron light analysis. These beam instruments include: SR beamline and optics; acquisition tools and high resolution CCD cameras distributed around the storage ring to measure the transverse beam profile and its position in vacuum chamber; photomultiplier tubes (PMT) which enables beam current measurements; video system. Some applications of these measurement systems and their measurement results are presented.

TUPSA031	Profiles and Intensities Measurments in the Diagnostic System of the Extracted Beams of the U-70 Accselerator	diagnostics, optics, proton	107
	A. Y. Sotnikov, N. Ivanova, A. V. Koshelev, V. Kovaltsov, A. Lukyantsev, S. Makonin, A. Matyushin, V. Milyutkin, V. S. Seleznev IHEP Protvino, Protvino, Moscow Region
	Diagnostic system for the extracted beams of the U-70 accelerator is a hardware-software complex with profilometers and electronic crates at the lower level, VME-crates with ADC-modules and MVME-167 processors (vxWorks operating system, basic EPICS tools, home made software) at the middle level, personal computers used as workstation at the upper level. In this report we consider: - the approaches to the system adaptation problems during the U-70 runs and solutions to these problems; - data acquisition and hardware-sofware levels of data processing for non-standard profilometers; - the tools for the beam intensity measurement and presentation, the intensimeter calibration procedure.

WECHY02	Kurchatov Synchrotron Radiation Source Facilities Modernization	electron, wiggler, storage-ring, injection	136
	V. Korchuganov, A. V. Anoshin, M. Blokhov, Y. A. Fomin, G. A. Kovachev, M. V. Kovalchuk, Y. V. Krylov, V. V. Kvardakov, V. V. Leonov, V. V. Martynenko, V. P. Moryakov, D. G. Odintsov, S. G. Pesterev, Yu. F. Tarasov, S. I. Tomin, V. Ushkov, A. G. Valentinov, A. Vernov, Y. L. Yupinov, A. V. Zabelin RRC, Moscow
	Kurchatov Synchrotron Radiation Source (KSRS) operates in the range of SR from VUV up to hard X-ray. Technical modernization of KSRS systems is under way. It includes a replacement of the power supplies and the nano- and micro-second generators by the new ones, the installation of the new third RF accelerator cavity on 2.5 GeV storage ring SIBERIA-2. The projects of the feedback system for the longitudinal coherent multi-bunch instabilities dumping and of the new sensitive electronics for pick-up stations on Siberia-2 storage ring start in 2010. Three 7.5 T wiggler beam lines were mounted and tested with SR beam in December 2009. The 7.5 T (19+2) poles SC wiggler and new 3 RF cavities are doing the KSRS spectrum harder and intensive. The program tools for KSRS operation are introduced in accelerator control system with a new electronics. The new scheme of top-up energy injection placed outside of Siberia-2 storage ring tunnel is carried out. The report describes a statistics works and plans on KSRS facilities.
	Slides

WECHB02	Review of the Diamond Light Source Timing System	gun, booster, linac, photon	144
	Y. S. Chernousko, P. Hamadyk, M. T. Heron Diamond, Oxfordshire
	Funding: Diamond Light Source Ltd The Diamond Light Source timing system utilises a central event generator with distributed event receivers at the equipment being controlled for all accelerator and beamline subsystems. This provides distributed fiducials with resolution of 8 nsec and stability of 8 psec. It is based on commercial hardware from Micro-Research, Finland. This paper describes the installed timing system and summarizes 5-year operational experience of the system. This includes the hardware and software, the distributing network, and the achieved precision and stability of the system. Developments in the timing system to support additional operational functionality of Diamond, including top-up operation, are also discussed.
	Slides

WEPSB007	The Expanded Program Tools for KSRS Operation with Archivation of Data	vacuum, electron, synchrotron, synchrotron-radiation	187
	E. V. Kaportsev RRC, Moscow
	The running cycle of Kurchatov Synchrotron Radiation Source (KSRS) includes the injection of electrons with energy 80 MeV from the linear accelerator in the booster storage ring Siberia-1, the accumulation of a electron current up to 400 mA and, then, electron energy ramping up to 450 MeV with the subsequent extraction of electrons in the main ring, storage ring Siberia-2, and accumulation there up to 300 mA, and at last the energy ramping up to 2.5 GeV. The control system is based on the distributed network of the processors operating technological systems of KSRS. The operational level of control system is realized as a local network of the personal computer. The database describing logic channels of the control, modes of the technological systems and the script of the running cycle of accelerating facilities is developed. The database for preservation of the received parameters of a complex is developed, the program of an archiving received with ADC data is developed. Logic channels of the control are a basis for creation of the user interface. The examples of realization of the software used in operative work KSRS are given. E. Kaportsev et al., The program tools for KSRS operation. Proceedings of RuPAC XX, Zvenigorod, Russia, 2008.

WEPSB018	Transverse Bunch Dynamics in Rectangular Dielectric Loaded Wakefield Accelerator	simulation, vacuum, electron, focusing	207
	A. Altmark, I. L. Sheynman LETI, Saint-Petersburg A. Kanareykin Euclid TechLabs, LLC, Solon, Ohio
	Funding: Ministry of Education and Science of Russia, “Scientific and scientific-pedagogical personnel of innovative Russia” and the Russian Foundation for Basic Research (09-02-00921) Beam breakup (BBU) effects resulting from parasitic wakefields provide a potentially serious limitation to the performance of dielectric structure based accelerators. We report here on comprehensive numerical studies of transverse bunch dynamics in a rectangular dielectric loaded accelerating structure. The numerical part of this research is based on a particle-Green’s function beam dynamics code (BBU-3000) that we are developing. The code allows rapid, efficient simulation of beam breakup effects in advanced linear accelerators. It is shown that the LSE modes make its main contribution to the transverse deflecting force causing beam breakup in rectangular DLA structures. Results of test simulations are presented.

WEPSB027	MiltP-M Code Upgrade	electron, simulation, focusing, electromagnetic-fields	227
	M. Gusarova, R. O. Bolgov, I. I.V. Isaev, S. V. Kutsaev, M. V. Lalayan, N. P. Sobenin MEPhI, Moscow L. V. Kravchuk RAS/INR, Moscow
	The new possibilities of MultP-M code for calculation of the multipactoring in radio frequency elements of charged particles accelerators taking into account influence of the external electric and magnetic fields are presented. Possibilities of the new module of three-dimensional display of geometry, electromagnetic fields and electron’s trajectories are shown. Example of multipactoring calculation in a transient mode in rectangular wave guide is considered

WEPSB029	Electron Gun and Collector for 2 Mev Electron Cooler for COSY	electron, gun, cathode, vacuum	233
	A. V. Ivanov, M. I. Bryzgunov, A. V. Bubley, V. M. Panasyuk, V. V. Parkhomchuk, V. B. Reva BINP SB RAS, Novosibirsk
	COSY storage ring will be upgraded in 2011 by installation of a new electron cooler. Electron cooling will reduce energy spread of protons and so improve the precision of internal target experiments. Some of the most important parts of this new electron cooler are the electron gun and the collector, and they must satisfy several rigid requirements. Electron gun must provide high perveance electron beam with low transversal temperature and variable beam profile. The gun control electrode assembled of four separate sections will provide measurements of beam envelope along the transport section of the cooler. Displacement of corresponding part of the beam may be observed if alternating voltage is applied to each section. Collector should have high perveance, low secondary emission coefficient, and small dimensions. Wien filter is supposed to be installed before the collector to satisfy these requirements. In this case we can use high perveance small-scale collector with axially-symmetric magnetic field; secondary electrons will be absorbed in Wien filter. An additional vacuum pumping must be provided in the collector design.

WEPSB031	Transverse Bunch-by-bunch Digital Feedback for the VEPP-4M Collider	feedback, betatron, kicker, collider	236
	D. P. Sukhanov, V. P. Cherepanov, V. V. Oreshonok, V. V. Smaluk BINP SB RAS, Novosibirsk
	The coupled-bunch instability is the base reason of the operating current limitation and even an beam loss at the VEPP-4M electron-positron collider. For suppression any excited transverse mode of oscillation of the accumulated beam, the transverse bunch-by-bunch digital feedback has been installed. The paper reports on the current design and status of the feedback system. The available diagnostic tools and latest operational results and beam measurements is given.

WEPSB032	Transverse Feedbacks in the U70 Proton Synchrotron of IHEP	feedback, kicker, pick-up, damping	239
	O. P. Lebedev, N. A. Ignashin, S. V. Ivanov, S. E. Sytov IHEP Protvino, Protvino, Moscow Region
	To handle the adverse effect of transverse injection errors and resistive-wall instability in the U70, two frequency-band-separated feedback circuits are routinely employed. The first one is a narrow-band (around base-band DC) local end-to-end-analog circuit terminated by an electrostatic kicker. The second is a wide-band band-pass circuit with a variable (–10% ca) digital delay line and low-level DSP units and an electro-magnetic kicker. Both the circuits were subjected to a deep renovation during the recent 5 years, which provided a better control over transverse motion of the beam. The paper reports on technical solutions implemented, problem-oriented R&D studies, and beam observations.

WEPSB033	User Interface in the Diagnostic System of the Extracted Beams of the U-70 Accselerator	diagnostics, optics, site	242
	A. Y. Sotnikov, N. Ivanova, A. V. Koshelev, V. Kovaltsov, A. Lukyantsev, V. Milyutkin, Y. N. Smirnov IHEP Protvino, Protvino, Moscow Region
	User interface in the diagnostic system of extracted beams is described. It was developed under Linux operating system on the personal computers used as workstations. The considered program tools provide: - the representation on operator consoles (workstations) information about beam profiles, intensity, displacement, root-mean-square error etc. in different forms; - the dynamic adjustment of the diagnostic system; - web presentation of the currrent information about the extracted beams; - data transfer to physical setups; - special beam characteristics calculation by the profilometer individual units data (for research purposes); - data archiving and web facilities for data viewing.

WEPSB035	Logging Actions of Operators in the IHEP U-70 Accelerator Complex Control System	injection	248
	V. P. Voevodin IHEP Protvino, Protvino, Moscow Region
	The control system (CS) of the U-70 accelerator complex supports distributed control rooms environment which are equipped by unified consoles. Using any console it is possible to request any action on any accelerator complex equipment in accordance with user’s rights to access it. There are situations requiring knowledge of actions, was performed on some peace of equipment during defined time slot. To solve this problem the CS logs all operators’ actions initialized from any consoles such as open/close session, change settings of accelerator parameters, restore settings from archives. The paper describes a logging software organization and functionalities, contents of the log files and information visualization tools.

WEPSB037	Specific Features of Automatic Control Systems for Applied Cyclotrons	cyclotron, vacuum, ion, injection	254
	A. P. Strokach, V. P. Bagrievich, A. N. Kuzhlev NIIEFA, St. Petersburg
	A distributed automatic control system for the MCC-30-15 compact medical cyclotron has been built on the hierarchy principle. The lower hierarchical level consists of controllers for various systems of the cyclotron, which are networked on the basis of Profibus. An industrial Advantech-type computer has been chosen as the host computer of the system. The upper hierarchical level also contains computers to control the RF system of the cyclotron and operator workstation. Computers of the upper hierarchical level are networked on the basis of Ethernet. The number of computers for the operator workstation is limited only by the Ethernet bandwidth and the speed of the host computer. To measure the beam current, a multi-channel high-precision measuring current amplifier has been developed, signals from which are sent to a high-speed ADC. It is possible to view current pulse oscillograms, which makes much more easy the adjustment of the cyclotron modes.

WEPSB038	LabView Control System of the Cryogenic Complex for the Kaon RF-Separator at IHEP	cryogenics, kaon, vacuum, monitoring	257
	V. Alferov, A. I. Ageev, A. Bakay, V. Fedorchenko, A. Kholkin, V. Krendelev, A. Lutchev, D. Vasiliev IHEP Protvino, Protvino, Moscow Region
	A cryogenic complex has been built at IHEP to provide liquid helium and nitrogen for the RF-separator of kaons. About 500 analog parameters and 300 digital signals have to be measured, tens of commands generated, and 20 closed loops activated. On a lower level of the control system there are 90 home made equipment controllers, based on Analog Device and Atmel programmable devices. They provide data acquisition, calculation of operating parameters, and generation of digital and 4-20 mA analog commands. Equipment controllers are connected to four personal computers (PC) by means of CAN field buses. The PCs in turn are connected by a dedicated Ethernet network. LabVIEW based software for control and monitoring of the cryogenic complex has been designed and developed. The paper describes the features and present status of the control electronics, firmware and software.

WEPSB039	Upgrade of the U-70 Proton Synchrotron Extracted Beam Lines Control System: Multiple Access and Data Presentation	synchrotron, proton, feedback, quadrupole	260
	V. Alferov, Y. Bordanovsky, V. Lagutin, I. Lobov, A. Lutchev IHEP Protvino, Protvino, Moscow Region
	Equipment under control consists of about 130 Magnet dipoles and quadrupoles, with power provided by 112 power supplies (PS). Each PS is controlled by an individual AD based controller; since a number of used magnets is not stable and exceeds the number of available PSs, commutation is used. Controllers are connected to a front-end computer by means of four CAN field buses. The software for these controllers is tuned to a specific type of the PS and a specific inductive load of the magnet. The server Dell PowerEdge T710 is used for PS control with multiply access from several client workstations which controls PSs for particular Beam Line. All client workstations along with server and front-end computer are connected together using a dedicated LAN. The server grants different users a different permissions to control their "own" PSs only. All measured data are stored into an archive, the archiving step is about 4 seconds. The operating commands are stored into the archive too, this feature gives a helpful possibility to reveal all users actions in case of measurement misunderstanding. The software is based on NI Developer Suit Core and MS Office Web Components packages.

WEPSB040	Software Service for Cryogenic Data Representation and Analysis	cryogenics, vacuum, site, radio-frequency	263
	I. Lobov, A. Lutchev, M. N. Stolyarov, S. A. Sukhov IHEP Protvino, Protvino, Moscow Region
	The Cryogenic and Vacuum System for OKA experimental complex requires reliable, fast and convenient program facilities for cryogenic data analysis – temperatures of cryogenic components, liquid helium levels, helium mass flow rates. The appropriate software service has been build on the base of common solution using MS SQL-server for historical data manipulation and IHEP Zerver for online data representation. Accordingly two computers are used to store and maintain cryogenic data which gives users two ways of data displaying. The archive view software (graphs, tables, correlation analysis) has been build with help of NI Developer Suit Core. The mimic panels software uses to display the live data. The mimic panels could be viewed through web-interface using Java applets, this is original software written in IHEP.

WEPSB041	CANopen Connected Power Supply Control Systems for the Electron Linacs	power-supply, linac, storage-ring, electron	266
	A. S. Chepurnov MSU SINP, Moscow V. N. Boriskin, A. A. Sarvilov, A. N. Savchenko, D. L. Stepin, G. N. Tsebenko, V. N. Vereshchaka NSC/KIPT, Kharkov I. V. Gribov MSU, Moscow A. F. Shamarin Marathon Ltd., Moscow
	Power supplies which feed magnetic systems of electron linac together with the control system are very critical parts of any linac. The quality of power supplies and control software defines safety of the accelerator operation, stability and cost of operation. One of the today’s tendencies in power supply system architecture is to use distributed CAN-connected power supplies with high level of local intellectual properties. These properties allow to achieve high stability, high safety of operation together with the specific features such as coil temperature check without any temperature sensors. Such programmable power supplies with the intellectual CANopen controller have been designed for the specific accelerator applications. The control system software was adapted to operate with CANopen protocol. Marathon's IPP-1/100 & IPP-4/35 power supplies with CANopen* are used now within the control systems of LU-60m and LU-10 linacs. 3200 hours of continues operation were achieved since the year 2008. * V. N.Boriskin et. al. POWER SUPPLY CONTROL SYSTEM FOR THE LINAC OF THE "NESTOR" STORAGE RING/ Proceedings of RuPAC 2008, Zvenigorod, Russia, 2008, pp.252-254.

WEPSB042	Universal Timer Module for the Timing System of the Accelerating-Storage Complex ITEP-TWAC	ion, linac, synchrotron, extraction	269
	A. Y. Orlov, P. N. Alekseev, S. V. Barabin, D. A. Liakin ITEP, Moscow
	A multipurpose synchronization module for renovating timing system of ITEP-TWAC accelerator facility is developed. A group of such modules is aimed to implement a sophisticated set of synchronization functions among four accelerators – proton linac I2, ion injector I3, buster synchrotron UK and accelerating and storage ring U10. This FPGA based module generates up to 16 output pulses related to timing scale (T), magnetic field scale (B), radio frequency, external events or their combination. The read back function allows controlling the pulses propagation on cycle-to-cycle basis. The structure of the module, a description of basic functions and IO interface are presented in details. Also an example of system configuration based on the developed module is discussed.

WEPSB043	Control System for the New Beam Transfer Line at IHEP	vacuum, power-supply, extraction, instrumentation	272
	M. S. Mikheev IHEP Protvino, Protvino, Moscow Region
	A. Matyushin, L. Kopylov, S. Merker, M. Mikheev Institute for High Energy Physics, New proton beam transfer line is study project to evaluate a possibility to use UNK injection line as an experimental facility. A wide set of accelerator equipment is involved in the test. The Control system is build on OPC and CAN technology using data driven and object oriented approach. The structure, key solution and operational experience are described in the paper.

THCHC05	A Family of Twenty-Amperes Power Supplies for Multipole Correctors for Accelerators and Storage Rings	power-supply, feedback, storage-ring, impedance	306
	O. V. Belikov, V. R. Kozak, A. S. Medvedko BINP SB RAS, Novosibirsk
	This report presents three types of direct current supplies that have been developed at BINP SB RAS. Their maximum current values are ±20А with output voltage up to ±50V, ±100V, ±150V. The power supplies are intended for steering electromagnets of colliders and storage rings, operating as the Synchrotron Radiation sources. The power supply channel occupies a 3U subunit crate (432355133mm) of the "Euromechanics" standard. Specialized units are used to control and monitor the power supplies through the CAN-bus interface. The output current accuracy is of the order of 100ppm for 10 hours of operation. This report presents experimental characteristics of the power supplies.
	Slides

THCHZ02	High Power ELV Accelerators for Industries Application	electron, extraction, radiation, target	313
	N. K. Kuksanov, S. Fadeev, Yu. I. Golubenko, D. A. Kogut, A. I. Korchagin, A. Lavrukhin, P. I. Nemytov, R. A. Salimov BINP SB RAS, Novosibirsk
	Beginning from 1971, the Budker Institute of Nuclear Physics Siberian Branch of Russian Academy of Science (SB RAS) started its activity in the development and manufacturing of electron accelerators of the ELV-type for their use in the industrial and research radiation-technological installations. The family of ELV-type accelerators has the energy range from 0.4 to 2.5 MeV with a beam of accelerated electrons of up to 100 mA and maximum power of up to 100 kW for ordinary accelerators and 400 kW power for environmental purpose accelerator. The ELV accelerators are especially popular accelerators not only in Russia, but in China, Korea, and etc. BINP continuously improves design and increases parameters of accelerators. Due to this circumstance and improving of economics after crisis amount of orders for accelerators extremely increased.
	Slides

THPSC006	Test Facility for SIS300 Cryomodules	cryogenics, quadrupole, vacuum, superconducting-magnet	334
	A. Vlasov, A. I. Ageev, E. Kashtanov, А. Khartchenko, S. Kozub, S. Zinchenko IHEP Protvino, Protvino, Moscow Region
	Within the framework of participation in FAIR project IHEP develops the fast-cycling superconducting quadrupole and corrector magnets for SIS300 accelerator. These magnets in the specific combinations will be united into the so called cryomodules having common cryostat. The facility for testing these cryomodules in the forced flow cooling mode, where it is intended to carry out the complex of electrical, magnetic and thermophysical tests, is examined. The facility is based on the existing helium compression and purification equipment, helium refrigerator and research cryostats. A satellite refrigerator is added to the cryogenic system, which also works as the helium mass flow rate multiplier.

THPSC009	Experimental Study of Characteristics of Cable for Fast-Cycling Superconducting Magnets	quadrupole, superconducting-magnet, magnet-design	343
	I. Bogdanov, E. Kashtanov, S. Kozub, P. A. Shcherbakov, L. S. Shirshov, I. Slabodchikov, L. Tkachenko, V. Zubko IHEP Protvino, Protvino, Moscow Region
	Funding: Russian Foundation for Basic Research. Project no. 09-08-00528. Fast-cycling magnetic fields, produced by superconducting magnets of the SIS300 accelerator, generate cable losses, which should be reduced by increase of contact resistances between wires in the cable. For this purpose various methods of cable interstrand resistance increasing are used successfully. But the values of contact resistances have strong influence on a stability, which could be characterized by minimum quench energy (MQE). From this point of view at IHEP it was carried out the experimental study of Rutherford type 19-strand superconducting cable with high value of contact resistances. Contact resistances and MQE measurements were performed. The description of features of samples, the measurement scheme and procedure are presented along with the experimental results.

THPSC014	One Aspect of Thermal Stability for 4-vane RFQ Operation with High Heat Loading	rfq, linac, coupling, simulation	352
	V. V. Paramonov RAS/INR, Moscow
	Due to dispersion properties, 4-vane RFQ cavity without resonant coupling is a thermally unstable structure. With deterioration of balance for local detuning, especially near cavity ends, there is a possibility for runaway in the field distribution and related thermal-stress effects. It can, in principle, finish with irreversible plastic deformations and cavity frequency shift. Both the increment and the threshold of instability are proportional to the average dissipated RF power. This possibility increases for long RFQ cavities. Also particularities for the cavity ends design are important. Some general features of this effect are discussed and illustrated with simulations.

THPSC017	High-voltage Source with Output Voltage up to 60kV with Output Current up to 1A	cathode, feedback, impedance, power-supply	357
	D. V. Senkov, I. A. Gusev, A. S. Medvedko, A. Yu. Protopopov, D. N. Pureskin BINP SB RAS, Novosibirsk
	The presented report contains the description of high-voltage source with output voltage up to 60kV and output current up to 1A. The source consist of the chopper with IGBT switches working with a principle of pulse-width modulation and the H-bridge converter with IGBT switches, both working on programmed from 15 to 25 kHz frequency, and the high voltage sectioned transformer with the rectifier and additional capacity filter. The transformer is made in oil tank with silicon oil. The additional capacity filter provides low ripple and noise level in working range of output currents. A nominal output voltage of the source is 60kV, maximal voltage is 80kV. The source can operate in normal mode with series of high-voltage breakdown in output voltage. In the high-voltage breakdown the released in load and matching circuit energy is less than 15 J at maximum operating voltage 65kV. The efficiency of system is more than 80% at the nominally output power 60kW. The controller of the source is developed with DSP and PLM, which allows optimizing operations of the source. For control of the source serial CAN-interface is used. The description of the source and the test results are presented.

THPSC018	Power Source for High Voltage Column of Injector to Proton Synchrotron with Output Power up to 5kW	synchrotron, resonance, proton, electron	360
	D. V. Senkov, Yu. I. Golubenko, A. S. Medvedko, P. I. Nemytov, D. N. Pureskin BINP SB RAS, Novosibirsk
	The presented report contains the description of power source with 400Hz output voltage of sinusoidal shape with amplitude up to 300V and output power up to 5kW, operating on the primary coil of high voltage transformer of precision 1.5MV high voltage source for proton synchrotron injector. The source consists of the converter with IGBT switches , working with a principle of pulse-width modulation on programmed from 15 to 25 kHz frequency, modulated with amplitude and frequency regulated sinusoidal 400Hz signal, transformer and the synchronous rectifier with IGBT switches, controlled synchronous with converter. The efficiency of system is more than 80% at the nominal output power 5kW. The controller of the source is developed with DSP and PLM, which allows optimizing operations of the source. For control of the source serial CAN-interface is used. The description of the source and the test results are presented.

THPSC021	Improving of the INR DTL Tank Accelerating Voltage Stability by Means of the Anode Modulator Feedback	feedback, vacuum, cathode, pick-up	366
	A. I. Kvasha RAS/INR, Moscow
	The INR DTL RF system consists of five RF channels with output pulse RF power from 1 to 2.5 MW. In turn, in every channel there are four RF vacuum tube amplifiers and two anode modulators. The output RF power amplifier anode modulator with hard discharger (vacuum tube GMI-44A) is used as executive device of accelerating voltage control system. The pulse transformer data at the GMI-44A input and time delay in the feedback of the control system don't allow ensuring the required accelerating voltage stabilization. Improving in a few times of accelerating field stabilization can be achieved by means of anode modulator feedback. Results of a numerical simulation of both feedbacks using MicroCap 8 are presented.

THPSC022	Development and Application of Electron Linac Electromagnetic Devices for Radiotechnologies	linac, electron, pick-up, target	369
	V. A. Shendrik, A. N. Dovbnya, A. E. Tolstoy NSC/KIPT, Kharkov
	The creation and subsequent service of modern electron linear accelerators at the NSC KIPT have brought evidence for possible successful introduction of radiotechnology processes using electron irradiation. A further extension and complication of physical problems solvable on the basis of radiotechnologies have put forward new and increased requirements for the systems of beam scanning, extraction and formation on the targets and extended irradiated objects. The results of applying our methods developed for prompt measurement of the kinetic energy of the scanned electron beam are presented. For measurement and continuous control of the electron energy the hodoscope magnetic spectrometer technique has been used. The spectrometer includes only one deflecting magnet and has no magnetic focusing. If the real field topography in the magnet is known in detail, then using the input and output coordinates of deflected particles it is possible to determine their energy, and also the chromaticity of electron beam. The step-pulse scanning of the beam is realized through the use of an air-core short-pulse electromagnet. Development and tests of separate units of the device are under way

THPSC025	Low Level RF Control of ITEP-TWAC Facility	booster, ion, synchrotron, proton	374
	P. N. Alekseev, S. V. Barabin, A. D. Milyachenko, V. P. Zavodov ITEP, Moscow
	Digital LLRF control system was developed to improve the RF system mobility in multimode operation of the ITEP-TWAC booster and main synchrotrons. High precision mapping of the magnetic field derivative signal to the reference function of accelerating frequency f(B) allows to accelerate ions of any type in both rings up to relativistic energies even without feedback loops. The first modification of the LLRF control module is based on a fixed point DSP, which operates with the frequency lookup table to calculate the accelerating frequency. This module is now used in the booster synchrotron. Upgraded module has a floating point DSP, which allows calculation of the accelerating frequency "on the fly". This module is in operation in the main ring. Short description of the systems is given. Some results and experience obtained at operation with the number of types of particles, such as protons and ions of carbon, aluminum, iron and silver, are presented.

THPSC029	UEL-10-D New Linear Electron Accelerator for Non-Destructive Testing	electron, target, focusing, power-supply	382
	I. Yu. Vakhrushin, V. Alexeev, L. Z. Kavalerchik, A. P. Klinov, A. S. Krestianinov, K. N. Maslov, Yu. P. Shchepin, M. F. Vorogushin NIIEFA, St. Petersburg
	A compact accelerator UEL-10-D for radiographic inspection of steel products up to 500mm thick has been designed and manufactured. The accelerator provides the 10 MeV energy and the photon dose rate 1m from target of 30Gy/min. The accelerator consists of an irradiator mounted on a yoke, heat-exchanger and industrial panel computer. The equipment of the accelerator is mostly located inside the irradiator including the HV power supply system, magnetron modulator and control system blocks. Using this yoke, the irradiator is installed on a bridge crane, which ensures its high manoerability necessary to test products of complicated geometry. Size of the irradiator without yoke is 2040950950 mm. In 2010, the accelerator was put into operation at the "Izhorskie Zavody", St. Petersburg. The UEL-10-D accelerator can be also used in radioscopic or tomographic systems.

THPSC034	Ion Scanning System in Beam Line of U-400M Cyclotron for Electronic Components Testing	ion, target, cyclotron, extraction	387
	A. A. Fateev, E. V. Gorbachev, G. G. Gulbekyan, I. V. Kalagin, V. I. Kazacha, N. Yu. Kazarinov, E. V. Muravieva JINR, Dubna, Moscow Region
	The channel B5 of the U-400M cyclotron is designed for irradiation of integrated circuits by beams of accelerated ions to determine their radiation resistance. The results of the beam transport calculations for various ion types taking into account the beam parameter changes on passing a collimator and degrader are presented. The resulting beam size on a target is obtained for all beam variants. The calculated beam size on the target varies in the range from 15 cm up to 30 cm. An analysis of three variants of the magnetic scanning system is made. The working scheme, construction and main technical characteristics of the optimal variant are presented.

FRCHX01	The High-Current Deuteron Accelerator for the Neutron Therapy	target, ion, radiation, power-supply	399
	V. M. Skorkin, S. V. Akulinichev, A. V. Andreev RAS/INR, Moscow
	Physical project of neutron sources for the neutron therapy and neutron activation analysis is proposed. The neutron sources are based on beam provided by the high-current deuteron accelerator. Neutron sources produces 14 MeV fast neutrons with intensity up to 5*10¹² n/s using T(D,n)4He threshold reaction at the energy of deuteron beam about 400 keV and average current up to 20 mA. Neutron source can be makes for neutron capture therapy (NCT) by using of moderator system consisted of the tungsten converter, bismuth reflector, graphite and polyethylene. Liquid-crystalline DNA-Gd nanoparticles, as a potential biomaterial for NCT were investigated on the thermal neutron beam. S. V. Akulinichev, A. V. Andreev Institute for Nuclear Research of RAS, Moscow, Russia
	Slides

FRCHA02	ELLUS-6M Linear Electron Accelerator for Radiotherapy	radiation, electron, target, monitoring	405
	V. A. Shishov, A. A. Budtov, M. F. Vorogushin NIIEFA, St. Petersburg
	A compact medical accelerator of new generation "ELLUS-6M" has been designed and manufactured for radiotherapy by 6MeV photons in the multi-static and arc modes. The gantry can be rotated through ±1850 and ensures setting accuracies of the irradiator rotation velocity and positioning sufficient for the IMRT mode. The computerized control system is compatible with the treatment planning system and allows upgrading by adding new modules. To realize the conformal radiotherapy, the following additional medical equipment has been developed: a multi-leaf collimator a portal vision system for the dose field verification during irradiation and an upgraded treatment table made as a semi-pantograph. In 2010, it is planned to finish clinical tests of the "ELLUS-6M" accelerator with the additional medical equipment in the N. N. Petrov Scientific Research Oncology Institute, Pesochny, St. Petersburg.
	Slides