LINAC2014 - List of Keywords (software)

Paper	Title	Other Keywords	Page
MOPP029	Overview of the New High Level Software Applications Developed for the HIE-ISOLDE Superconducting Linac	controls, linac, cavity, pick-up	117
	D. Lanaia, M.A. Fraser, D. Voulot CERN, Geneva, Switzerland
	The High Intensity and Energy (HIE) ISOLDE project consists of an upgrade of the ISOLDE facility. With the installation of 32 independently-phased, superconducting quarter-wave cavities the energy of post-accelerated radioactive beams will be increased from 3 MeV/u to over 10 MeV/u. The large number of cavities will increase the number of parameters to optimise. In order to ensure a fast set-up of the machine during operation and commissioning, new software applications have been developed and an upgrade of the existing software was carried out. Four high level applications have been specifically developed for the SC linac. The first allows the conversion of optics settings into machine settings, and vice versa. The second will aid the phasing of the cavities using beam energy measurements. A third application will provide absolute measurements of the beam energy by means of a time-of-flight system. The last application will automatically generate the phase and voltage settings for the cavities SC linac. In this contribution we will present the new applications and outline how these will be used in the operation of the new SC linac.
	Poster MOPP029 [1.568 MB]

MOPP045	Progress and Plan of Open XAL Physics Application for FRIB	linac, solenoid, cryomodule, database	158
	Y. Zhang, P. Chu, D.G. Maxwell FRIB, East Lansing, Michigan, USA
	Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 FRIB driver linac will deliver heavy ion beams with beam energy above 200 MeV/u, and beam power on target up to 400 kW. Commissioning, tuning, and beam power ramping up of the world’s first SRF linac for high-power heavy-ion beams will be challenge, and developments of necessary physics application software tools are very important. In this paper, our major progress and the development plan of physics application software for the FRIB linac within Open XAL frameworks are discussed, which include the FRIB linac online model, MySQL database for physics applications, virtual accelerator application, and several other pilot physics applications. Deploying and initial testing of Open XAL and those pilot applications for FRIB are currently ongoing for a new cryomodule at Michigan State University.

MOPP135	Exact Solutions of the Vlasov Equation in Magnetic Field	distributed, simulation	377
	O.I. Drivotin, D.A. Ovsyannikov St. Petersburg State University, St. Petersburg, Russia
	Funding: This work was supported by St.-Petersburg State University grant #9.38.673.2013. This report is devoted to self-consistent distributions for charged particle beam which are regarded as solutions of the Vlasov equation. New approach based on covariant formulation of the Vlasov equation* is developed. Such approach allows using various coordinates in the phase space. It is shown how to apply this approach to the problem of finding of solutions of the Vlasov equation for charged particle beam. Solutions obtained within the framework of this approach are presented. Most known example is the Kapchinsky-Vladimirsky distribution. Wide classes of distributions for uniformly charged beam are also considered. * O.I. Drivotin. Covariant formulation of the Vlasov equation. Proc. of 2011 Int. Part. Acc. Conf.(IPAC'2011), San-Sebastian, Spain, 2011. accelconf.web.cern.ch/accelconf/ipac2011/papers/wepc114.pdf

TUIOC01	Large Scale Testing of SRF Cavities and Modules	cryomodule, cavity, laser, vacuum	426
	J. Świerbleski IFJ-PAN, Kraków, Poland
	Series production of SRF cavities, s.c. quadrupole packages and accelerator modules for the European XFEL is in full swing. Mid 2014 approx. 400 cavities will be tested, the testing of quadrupoles will be almost finished, and regular module testing will be established. Thus the talk should emphasize the quasi industrial testing of these components, of course including a good overview about the used somewhat unique AMTF infrastructure.
	Slides TUIOC01 [3.094 MB]

TUPP031	Understanding the Error Tolerances Required to Automatically Phase the HIE-ISOLDE Linac	emittance, linac, cavity, experiment	496
	M.A. Fraser, J.C. Broere, S. Haastrup, D. Lanaia, D. Valuch, D. Voulot CERN, Geneva, Switzerland
	The broad experimental programme at ISOLDE means that the same radioactive beam species and energy are rarely studied twice and the cavities of the linac must be scaled or re-phased for each experiment. A software application was developed to automatically re-phase the cavities of the HIE-ISOLDE superconducting linac to the beam from computed settings. The application was developed to expedite both machine set-up in normal operation and in scenarios involving cavity failures. A beam dynamics error study will be presented in order to better understand the challenges facing the automatic phasing routine. The effects of a variety of different errors on the efficacy of the phasing application were studied, leading to a specification of the tolerances required for the calibration of the rf system and the accuracy of the survey system that monitors the positions of the cavities.

TUPP067	Chopper Operation for the Tandem Scrapers at the J-PARC Linac	linac, operation, cavity, timing	581
	K. Futatsukawa, Z. Fang, Y. Fukui, T. Kobayashi, S. Michizono KEK, Ibaraki, Japan E. Chishiro, K. Hirano, F. Sato, S. Shinozaki JAEA/J-PARC, Tokai-mura, Japan
	In the J-PARC linac, the energy upgrade from 181 MeV to 400 MeV by the installation of annular-ring coupled structure (ACS) cavities was successfully achieved in 2013. In the next stage, we will schedule the intensity upgrade by the increase of the beam current by improving the front-end in this summer. Then, the high heat load of the scraper, which stops the kicked-beam by the RF chopper, is predicted to damage the surface. Therefore, we prepare the tandem scrapers to suppress the heat load. The half of the kicked beam leads to a scraper and the residual is to the other. Its chopping expedient will be achieved by reversing the phase of the RF chopper on the periodic cycle at the low-level RF system. In this paper, I would like to introduce this system and present the result of the low-level test.

TUPP139	Design Studies with DEMIRCI for SPP RFQ	rfq, interface, ion, cavity	740
	B. Yasatekin, G. Turemen Ankara University, Faculty of Sciences, Ankara, Turkey A. Alacakir TAEK, Ankara, Turkey G. Unel UCI, Irvine, California, USA
	To design a Radio Frequency Quadrupole (RFQ) is a onerous job which requires a good understanding of all the main parameters and the relevant calculations. Up to the present there are only a few software packages performing this task in a reliable way. These legacy software, though proven in time, could benefit from the modern software development tools like Object Oriented (OO) programming. In this note, a new RFQ design software, DEMIRCI is introduced. It is written entirely from scratch using C++ and based on CERN's OO ROOT library. It has a user friendly graphical user interface and also a command line interface for batch calculations. It can also interact by file exchange with similar software in the field. After presenting the generic properties of DEMIRCI, its compatibility with similar software packages is discussed based on the results from the reference design parameters of SPP (SNRTC Project Prometheus), a demonstration accelerator at Ankara, Turkey.
	Poster TUPP139 [11.590 MB]

THPP113	Architecture Design for the SwissFEL LLRF System	LLRF, controls, hardware, feedback	1114
	Z. Geng, M. Broennimann, I. Brunnenkant, A. Dietrich, F. Gärtner, A. Hauff, M. Jurcevic, R. Kalt, S. Mair, A. Řežaeizadeh, L. Schebacher, T. Schilcher, W. Sturzenegger PSI, Villigen PSI, Switzerland
	The SwissFEL under construction at the Paul Scherrer Institut (PSI) requires high quality electron beams to generate x-ray Free Electron Laser (FEL) for various experiments. The LLRF system is used to control the klystron to provide highly stable RF field in accelerator structures for beam acceleration. There are more than 30 RF stations in the SwissFEL accelerator with different frequencies (S-band, C-band and X-band) and different types of cavities (standing wave cavities and traveling wave structures). Each RF station will be controlled by a LLRF control node and all RF stations will be connected to the real-time network in the scope of the global beam based feedback system. High level applications and automation procedures will be defined to fit the LLRF control nodes into the global control applications for the accelerator operation. In order to handle the complexity of the LLRF system, the system architecture is carefully designed considering the external interfaces, functions and performance requirements to the LLRF system. The architecture design of the LLRF system will be described in this paper with the focus on the fast networks, digital hardware, firmware and software.

Paper

Title

Other Keywords

Page

MOPP029

Overview of the New High Level Software Applications Developed for the HIE-ISOLDE Superconducting Linac

controls, linac, cavity, pick-up

117

D. Lanaia, M.A. Fraser, D. Voulot
CERN, Geneva, Switzerland

The High Intensity and Energy (HIE) ISOLDE project consists of an upgrade of the ISOLDE facility. With the installation of 32 independently-phased, superconducting quarter-wave cavities the energy of post-accelerated radioactive beams will be increased from 3 MeV/u to over 10 MeV/u. The large number of cavities will increase the number of parameters to optimise. In order to ensure a fast set-up of the machine during operation and commissioning, new software applications have been developed and an upgrade of the existing software was carried out. Four high level applications have been specifically developed for the SC linac. The first allows the conversion of optics settings into machine settings, and vice versa. The second will aid the phasing of the cavities using beam energy measurements. A third application will provide absolute measurements of the beam energy by means of a time-of-flight system. The last application will automatically generate the phase and voltage settings for the cavities SC linac. In this contribution we will present the new applications and outline how these will be used in the operation of the new SC linac.

Poster MOPP029 [1.568 MB]

MOPP045

Progress and Plan of Open XAL Physics Application for FRIB

linac, solenoid, cryomodule, database

158

Y. Zhang, P. Chu, D.G. Maxwell
FRIB, East Lansing, Michigan, USA

Funding: This material is based upon work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
FRIB driver linac will deliver heavy ion beams with beam energy above 200 MeV/u, and beam power on target up to 400 kW. Commissioning, tuning, and beam power ramping up of the world’s first SRF linac for high-power heavy-ion beams will be challenge, and developments of necessary physics application software tools are very important. In this paper, our major progress and the development plan of physics application software for the FRIB linac within Open XAL frameworks are discussed, which include the FRIB linac online model, MySQL database for physics applications, virtual accelerator application, and several other pilot physics applications. Deploying and initial testing of Open XAL and those pilot applications for FRIB are currently ongoing for a new cryomodule at Michigan State University.

MOPP135

Exact Solutions of the Vlasov Equation in Magnetic Field

distributed, simulation

377

O.I. Drivotin, D.A. Ovsyannikov
St. Petersburg State University, St. Petersburg, Russia

Funding: This work was supported by St.-Petersburg State University grant #9.38.673.2013.
This report is devoted to self-consistent distributions for charged particle beam which are regarded as solutions of the Vlasov equation. New approach based on covariant formulation of the Vlasov equation* is developed. Such approach allows using various coordinates in the phase space. It is shown how to apply this approach to the problem of finding of solutions of the Vlasov equation for charged particle beam. Solutions obtained within the framework of this approach are presented. Most known example is the Kapchinsky-Vladimirsky distribution. Wide classes of distributions for uniformly charged beam are also considered.
* O.I. Drivotin. Covariant formulation of the Vlasov equation. Proc. of 2011 Int. Part. Acc. Conf.(IPAC'2011), San-Sebastian, Spain, 2011. accelconf.web.cern.ch/accelconf/ipac2011/papers/wepc114.pdf

TUIOC01

Large Scale Testing of SRF Cavities and Modules

cryomodule, cavity, laser, vacuum

426

J. Świerbleski
IFJ-PAN, Kraków, Poland

Series production of SRF cavities, s.c. quadrupole packages and accelerator modules for the European XFEL is in full swing. Mid 2014 approx. 400 cavities will be tested, the testing of quadrupoles will be almost finished, and regular module testing will be established. Thus the talk should emphasize the quasi industrial testing of these components, of course including a good overview about the used somewhat unique AMTF infrastructure.

Slides TUIOC01 [3.094 MB]

TUPP031

Understanding the Error Tolerances Required to Automatically Phase the HIE-ISOLDE Linac

emittance, linac, cavity, experiment

496

M.A. Fraser, J.C. Broere, S. Haastrup, D. Lanaia, D. Valuch, D. Voulot
CERN, Geneva, Switzerland

The broad experimental programme at ISOLDE means that the same radioactive beam species and energy are rarely studied twice and the cavities of the linac must be scaled or re-phased for each experiment. A software application was developed to automatically re-phase the cavities of the HIE-ISOLDE superconducting linac to the beam from computed settings. The application was developed to expedite both machine set-up in normal operation and in scenarios involving cavity failures. A beam dynamics error study will be presented in order to better understand the challenges facing the automatic phasing routine. The effects of a variety of different errors on the efficacy of the phasing application were studied, leading to a specification of the tolerances required for the calibration of the rf system and the accuracy of the survey system that monitors the positions of the cavities.

TUPP067

Chopper Operation for the Tandem Scrapers at the J-PARC Linac

linac, operation, cavity, timing

581

K. Futatsukawa, Z. Fang, Y. Fukui, T. Kobayashi, S. Michizono
KEK, Ibaraki, Japan
E. Chishiro, K. Hirano, F. Sato, S. Shinozaki
JAEA/J-PARC, Tokai-mura, Japan

In the J-PARC linac, the energy upgrade from 181 MeV to 400 MeV by the installation of annular-ring coupled structure (ACS) cavities was successfully achieved in 2013. In the next stage, we will schedule the intensity upgrade by the increase of the beam current by improving the front-end in this summer. Then, the high heat load of the scraper, which stops the kicked-beam by the RF chopper, is predicted to damage the surface. Therefore, we prepare the tandem scrapers to suppress the heat load. The half of the kicked beam leads to a scraper and the residual is to the other. Its chopping expedient will be achieved by reversing the phase of the RF chopper on the periodic cycle at the low-level RF system. In this paper, I would like to introduce this system and present the result of the low-level test.

TUPP139

Design Studies with DEMIRCI for SPP RFQ

rfq, interface, ion, cavity

740

B. Yasatekin, G. Turemen
Ankara University, Faculty of Sciences, Ankara, Turkey
A. Alacakir
TAEK, Ankara, Turkey
G. Unel
UCI, Irvine, California, USA

To design a Radio Frequency Quadrupole (RFQ) is a onerous job which requires a good understanding of all the main parameters and the relevant calculations. Up to the present there are only a few software packages performing this task in a reliable way. These legacy software, though proven in time, could benefit from the modern software development tools like Object Oriented (OO) programming. In this note, a new RFQ design software, DEMIRCI is introduced. It is written entirely from scratch using C++ and based on CERN's OO ROOT library. It has a user friendly graphical user interface and also a command line interface for batch calculations. It can also interact by file exchange with similar software in the field. After presenting the generic properties of DEMIRCI, its compatibility with similar software packages is discussed based on the results from the reference design parameters of SPP (SNRTC Project Prometheus), a demonstration accelerator at Ankara, Turkey.

Poster TUPP139 [11.590 MB]

THPP113

Architecture Design for the SwissFEL LLRF System

LLRF, controls, hardware, feedback

1114

Z. Geng, M. Broennimann, I. Brunnenkant, A. Dietrich, F. Gärtner, A. Hauff, M. Jurcevic, R. Kalt, S. Mair, A. Řežaeizadeh, L. Schebacher, T. Schilcher, W. Sturzenegger
PSI, Villigen PSI, Switzerland

The SwissFEL under construction at the Paul Scherrer Institut (PSI) requires high quality electron beams to generate x-ray Free Electron Laser (FEL) for various experiments. The LLRF system is used to control the klystron to provide highly stable RF field in accelerator structures for beam acceleration. There are more than 30 RF stations in the SwissFEL accelerator with different frequencies (S-band, C-band and X-band) and different types of cavities (standing wave cavities and traveling wave structures). Each RF station will be controlled by a LLRF control node and all RF stations will be connected to the real-time network in the scope of the global beam based feedback system. High level applications and automation procedures will be defined to fit the LLRF control nodes into the global control applications for the accelerator operation. In order to handle the complexity of the LLRF system, the system architecture is carefully designed considering the external interfaces, functions and performance requirements to the LLRF system. The architecture design of the LLRF system will be described in this paper with the focus on the fast networks, digital hardware, firmware and software.