IPAC2021 - List of Keywords (software)

Paper	Title	Other Keywords	Page
MOPAB047	A CAD Tool for Linear Optics Design: A Use Case Approach	controls, MMI, optics, GUI	205
	J. Bengtsson HZB, Berlin, Germany T.J.R. Nicholls, W.A.H. Rogers DLS, Oxfordshire, United Kingdom
	The formula relevant for linear optics design of synchrotrons are derived systematically from first principles, i.e., an exercise in Hamiltonian dynamics. Equipped with these, the relevant use cases are then captured; for a streamlined approach. To enable professionals, i.e., software engineers, to efficiently prototype & architect a CAD tool available to mechanical engineers since the mid-1960s. In other words, robust design of a modern synchrotron is an exercise in/pursuit of the art of Engineering-Science.
	Poster MOPAB047 [1.059 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB047
About •	paper received ※ 17 May 2021 paper accepted ※ 28 May 2021 issue date ※ 15 August 2021
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MOPAB322	Electronics for Bead-pull Measurement of Radio Frequency Accelerating Structures in LEHIPA	controls, cavity, rfq, interface	993
	S. Rosily, S. Krishnagopal Homi Bhbha National Institute (HBNI), DAE, Mumbai, India S. Krishnagopal, S. Singh BARC, Mumbai, India
	For carrying out bead-pull characterisation of RFQ and DTL at the Low Energy High Intensity Proton Accelerator of BARC, a controller for simultaneous motion of 64 axis, tuners or post couplers, was developed. Also, a bead motion controller with integrated phase measurement sensor was developed. The paper discusses the requirements of the system, the architecture of the control systems, operation and results. The results obtained from the sensor was compared to that obtained using an independent USB VNA. The advantages of the system especially with addition of internal phase measurement sensor including minimising position error, flexibility in beadpull to selectively increase resolution at specified locations and ease of implementing auto-tuning algorithms are discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB322
About •	paper received ※ 20 May 2021 paper accepted ※ 24 May 2021 issue date ※ 14 August 2021
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MOPAB411	Quantifying DNA Damage in Comet Assay Images Using Neural Networks	network, proton, experiment, radiation	1233
	S.J.K. Dhinsey, T. Greenshaw, C.P. Welsch The University of Liverpool, Liverpool, United Kingdom J.L. Parsons Cancer Research Centre, University of Liverpool, Liverpool, United Kingdom C.P. Welsch Cockcroft Institute, Warrington, Cheshire, United Kingdom
	Funding: This work was supported by the STFC Liverpool Centre for Doctoral Training on Data Intensive Science (LIV. DAT) under grant agreement ST/P006752/1. Proton therapy for cancer treatment is a rapidly growing field and increasing evidence suggests it induces more complex DNA damage than photon therapy. Accurate comparison between the two treatments requires quantification of the DNA damage the cause, which can be assessed using the Comet Assay. The program outlined here is based on neural network architecture and aims to speed up analysis of Comet Assay images and provide accurate, quantifiable assessment of the DNA damage levels apparent in individual cells. The Comet Assay is an established technique in which DNA fragments are spread out under the influence of an electric field, producing a comet-like object. The elongation and intensity of the comet tail (consisting of DNA fragments) indicate the level of damage incurred. Many methods to measure this damage exist, using a variety of algorithms. However, these can be time consuming, so often only a small fraction of the comets available in an image are analysed. The automatic analysis presented in this contribution aims to improve this. To supplement the training and testing of the network, a Monte Carlo model will also be presented to create simulated comet assay images.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB411
About •	paper received ※ 19 May 2021 paper accepted ※ 09 June 2021 issue date ※ 16 August 2021
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TUPAB166	A New Design of a Dressed Balloon Cavity with Superior Mechanical Properties	cavity, multipactoring, SRF, linac	1769
	R.A. Kostin, C. Jing, S. Ross Euclid Beamlabs, Bolingbrook, USA I.V. Gonin, T.N. Khabiboulline, G.V. Romanov, V.P. Yakovlev Fermilab, Batavia, Illinois, USA M.P. Kelly ANL, Lemont, Illinois, USA R.E. Laxdal TRIUMF, Vancouver, Canada
	Funding: Work supported by the SBIR program of the U.S. Department of Energy, under grant DE-SC0020781 Superconducting spoke cavities are prone to multipactor - resonant raise of a number of electrons due to secondary emission. Recently proposed and tested by TRIUMF balloon-type spoke cavity showed an outstanding multipactor (MP) suppression property but unfortunately serious Q degradation at high fields. A new fully developed design of a dressed balloon cavity which can be used for any proton linac SSR2 section is developed. The design incorporates additional EP ports for high Q-factor demonstration. Superior properties are demonstrated, such as effective multipactor suppression, 40% lower Lorentz force coefficient, zero sensitivity to external pressure. This paper presents the results of coupled structural Multiphysics analysis, and engineering design of the dressed balloon cavity with EP ports.
	Poster TUPAB166 [1.394 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB166
About •	paper received ※ 15 May 2021 paper accepted ※ 21 June 2021 issue date ※ 01 September 2021
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TUPAB248	A Parallel Time Domain Thermal Solver for Transient Analysis of Accelerator Cavities	cavity, gun, simulation, background	2030
	C.-K. Ng, L. Ge, Z. Li, L. Xiao SLAC, Menlo Park, California, USA
	Funding: Work supported by US DOE under contract AC02-76SF00515. Simulation of thermal effects in accelerator cavity is normally performed assuming steady state solution where a static thermal solver suffices to evaluate temperature gradients and impacts on mechanical design. However, during the rf pulse ramp up or the machine system cool-down process, when the field in the cavity changes rapidly, transient effects need to be taken into account. A parallel time domain thermal solver has been developed in the finite element multi-physics code suite ACE3P with integrated electromagnetic, thermal and mechanical modeling capabilities. The implementation takes advantage of the parallel computation infrastructure of ACE3P and shares most of the ingredients in mesh generation, matrix assembly, time advancement scheme and postprocessing. In this paper, we will outline the finite element formulation of the transient thermal problem and verify the implementation against analytical solutions and existing numerical results. The thermal solver has also been coupled to ACE3P mechanical solver, allowing stress and strain analysis during the transient stage. Application of the transient thermal solver to realistic accelerator cavities will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB248
About •	paper received ※ 19 May 2021 paper accepted ※ 25 August 2021 issue date ※ 02 September 2021
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TUPAB300	Ion Source Optimization Using Bi-Objective Genetic and Matrix-Profile Algorithm	ion-source, controls, experiment, ECR	2190
	W. Geithner, Z. Andelkovic, O. Geithner, F. Herfurth, V. Rapp GSI, Darmstadt, Germany A. Neméth Atato, Alzenau, Germany A. Van Benschoten MPF, Plymouth, Minnesota, USA F. Wilhelmstötter emarsys, Vienna, Austria
	Employing the local ECR ion source of the FAIR phase 0 ion storage ring CRYRING@ESR, we set up an IT-environment for on-line data processing and applications based on the data available from beam diagnostic instruments and input signals controlling the ion source. As a first proof of principle, we implemented a closed-loop optimization software controller based on bi-objective Genetic Optimization. As one property for optimization we used the ion beam current measured with a Faraday-cup detector. As second optimization-property we the on-line processed time-resolved signal of the individual ion-source pulses employing the relatively new Matrix-Profile Algorithm* which provides a measure for the shot-by-shot variability of the consecutive pulses. We will report on the status of the data logging framework, the implementation of related software programs and the results of first tests. * Wilhelmstötter, F.: Jenetics advanced genetic algorithm, online http://jenetics.io ** Matrix Profile Foundation. Homepage, online https://github.com/matrix-profile-foundation
	Poster TUPAB300 [5.485 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB300
About •	paper received ※ 01 June 2021 paper accepted ※ 21 June 2021 issue date ※ 16 August 2021
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TUPAB412	New 3 MeV and 7 MeV Accelerators for Cargo Screening and NDT	electron, target, gun, linac	2491
	S. Proskin, D. Fischer, A.V. Mishin Varex Imaging, Salt Lake City, USA
	For decades evaluating of cargo and non-destructive testing of objects have been utilizing high energy systems based on particle accelerators. End users wish for lower prices, better image quality, and convenience of utilization. In recent years Varex Imaging, world leader in innovation, development, and manufacture of X-ray imaging component solutions, has been developing a series of new accelerator products with improved parameters and a goal of replacing existing dated systems and growing of emerging markets. New S-band energy regulated 3 MeV and 7 MeV linear accelerators have been designed, tested at Varex Imaging and their customer sites. Novel linacs benefit is in dramatically increased output, reduced beam spot, longer operation, and improved versatility. Authors will outline recent progress and future endeavors in linear accelerator development with regards to improvement of accelerating structures, X-ray targets, and corresponding RF components. This work would have not been successful without outstanding contribution of the whole Linac Group of Varex Imaging and established partnerships with our customers*
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB412
About •	paper received ※ 18 May 2021 paper accepted ※ 02 June 2021 issue date ※ 18 August 2021
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WEPAB309	Study and Design of the Appropriate High-Performance Computing System for Beamline Data Analysis Application at Iranian Light Source Facility (ILSF)	hardware, experiment, data-analysis, network	3399
	A. Khaleghi, M. Akbari ILSF, Tehran, Iran H. Haedar, K. Mahmoudi, M. Takhttavani IKIU, Qazvin, Iran S. Mahmoudi Sharif University of Technology (SUT), Tehran, Iran
	Data analysis is a very important step in doing experiments at light sources, where multiple application and software packages are used for this purpose. In this paper we have reviewed some software packages that are used for data analysis and design at Iranian Light Source Facility then according to their processing needs, after taking in mind different HPC scenarios a suitable architecture for deployment of the ILSF HPC is presented. The proposed architecture is a cluster of 64 computing nodes connected through Ethernet and InfiniBand network running a Linux operating system with support of MPI parallel environment.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB309
About •	paper received ※ 19 May 2021 paper accepted ※ 23 July 2021 issue date ※ 01 September 2021
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WEPAB310	Study and Design of a High-Performance Computing Infrastructure for Iranian Light Source Facility Based on the Accelerator Physicists and Engineers’ Applications Requirements	network, hardware, Ethernet, simulation	3402
	K. Mahmoudi, H. Haedar, A. Khaleghi IKIU, Qazvin, Iran M. Akbari, A. Khaleghi ILSF, Tehran, Iran S. Mahmoudi IUST, Narmac, Tehran, Iran
	Synchrotron design and operation are one of the complex tasks which requires a lot of precise computation. As an example, we could mention the simulations done for calculating the impedance budget of the machine which requires a notable amount of computational power. In this paper we are going to review different HPC scenarios suitable for this matter then we will present our design of a suitable HPC based on the accelerator physicists and engineers’ needs. Going through different HPC scenarios such as shared memory architectures, distributed memory architectures, cluster, grid and cloud computing we conclude implementation of a dedicated computing cluster can be desired for ILSF. Cluster computing provides the opportunity for easy and saleable scientific computation for ILSF also another advantage is that its resources can be used for running cloud or grid computing platforms as well.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB310
About •	paper received ※ 19 May 2021 paper accepted ※ 19 July 2021 issue date ※ 12 August 2021
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WEPAB407	An Innovative Eco-System for Accelerator Science and Technology	neutron, controls, ion-source, framework	3660
	C. Darve, J.B. Andersen, S. Salman ESS, Lund, Sweden B. Nicquevert, S. Petit CERN, Geneva, Switzerland M. Stankovski LINXS, Lund, Sweden
	The emergence of new technologies and innovative communication tools permits us to transcend societal challenges. While particle accelerators are essential instruments to improve our quality of life through science and technology, an adequate ecosystem is essential to activate and maximize this potential. Research Infrastructure (RI) and industries supported by enlightened organizations and education, can generate a sustainable environment to serve this purpose. In this paper, we will discuss state-of-the-art infrastructures taking the lead to reach this impact, thus contributing to economic and social transformation.
	Poster WEPAB407 [61.076 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB407
About •	paper received ※ 19 May 2021 paper accepted ※ 02 July 2021 issue date ※ 18 August 2021
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THPAB053	Magnetic Field Calculation of Planar SCUs Using ANSYS Maxwell	undulator, photon, FEL, software-tool	3868
	Y. Shiroyanagi, E.A. Anliker, Q.B. Hasse, H. Hu, Y. Ivanyushenkov, M. Kasa, I. Kesgin ANL, Lemont, Illinois, USA
	Funding: This work was supported by U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357. The Advanced Photon Source (APS) Upgrade includes a 4.8-m-long superconducting undulator (SCU) cryostat containing two 1.9-m-long, 16.5-mm-period planar NbTi undulator magnets. The magnetic and mechanical design of this magnet follows the design of the existing 1.1-m-long, 18-mm-period planar SCU that is currently in operation at the APS . Although OPERA is a reliable standard software tool for magnetic field calculations, ANSYS Maxwell 3D has the advantage of calculating a large and complex geometry. In this paper, first, the magnetic field map, including the peak field and end fields, is bench-marked against the magnetic measurement data of the existing planar SCU18-1. Then, corrector current optimization is presented for the 1.5-m-long, 21-mm-period planar SCU. Finally, a magnetic field model of a full-scale, 1.9-m-long planar SCU is presented. Y. Ivanyushenkov et al., Phys. Rev. Accel. Beams 20, 100701 (2017).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB053
About •	paper received ※ 18 May 2021 paper accepted ※ 18 June 2021 issue date ※ 11 August 2021
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THPAB134	Development and Analysis of Software for the Numerical Simulation of Field Emission Electron Sources	electron, simulation, injection, electronics	4024
	N.S. Kakorin, K.A. Nikiforov Saint Petersburg State University, Saint Petersburg, Russia N.V. Egorov St. Petersburg State University, St. Petersburg, Russia
	Funding: The reported study was funded by RFBR, project number 20-07-01086. The open-source DAISI C++ package (Design of Accelerators, optImizations and SImulations) is extended with the ability to simulate the operation of electron sources in the field emission mode, with the user-defined initial distribution of emitted electrons velocities, as a model parameter, and with the automated calculation of current-voltage characteristics. Particles injection scheme is suggested. Computational experiments are performed for silicon carbide field emission electron source nanostructure with bimodal energy spectrum, revealed from experimental study, and comparative analysis with Maxwell distribution is presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB134
About •	paper received ※ 20 May 2021 paper accepted ※ 27 July 2021 issue date ※ 17 August 2021
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THPAB138	FEbreak: A Comprehensive Diagnostic and Automated Conditioning Interface for Analysis of Breakdown and Dark Current Effects	controls, cavity, FPGA, real-time	4027
	M.E. Schneider, S.V. Baryshev Michigan State University, East Lansing, Michigan, USA R.L. Fleming, D. Gorelov, J.W. Lewellen, E.I. Simakov LANL, Los Alamos, New Mexico, USA E. Jevarjian MSU, East Lansing, Michigan, USA
	Funding: DE-AC02-06CH11357, No. DE-SC0018362, DE-NA-0003525, DE-AC52-06NA25396, LA-UR-21-20613 As the next generation of accelerator technology pushes towards being able to achieve higher and higher gradients there is a need to develop high-frequency structures that can support these fields . The conditioning process of the structures and waveguides to high gradient is a labor-intensive process, its length increases as the maximum gradient is increased. This results in the need to automate the conditioning process. This automation must allow for high accuracy calculations of the breakdown probabilities associated with the conditioning process which can be used to instruct the conditioning procedure without the need for human intervention. To automate the conditioning process at LANL’s high gradient C-band accelerator test stand we developed FEbreak that is a breakout probability and conditioning automation software that is a part of the FEmaster series , , *. FEbreak directly interfaces with the rest of FEmaster to automate the data collection and data processing to not only analyze the breakdown probability but also the dark current effects associated with these high gradient structures. E. I. Simakov Nuc. Inst. and Meth, in Phy. Research Section A: Acc. Spec, 907 221 (2019) E. Jevarjian arXiv:2009.13046 * T. Y. Posos arXiv:2012.03578 **** M. Schneider arXiv:2012.10804
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB138
About •	paper received ※ 18 May 2021 paper accepted ※ 02 July 2021 issue date ※ 16 August 2021
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THPAB186	Review of Proton Linac Beam Dynamic Simulation Code	linac, simulation, proton, space-charge	4137
	X.Y. Feng, J. Peng IHEP CSNS, Guangdong Province, People’s Republic of China
	CSNS-II project design a linac accelerates 40 mA H⁻ beam from 3.8 MeV to 300 MeV, which should not only overcome the space-charge effect at low energy but also have high efficiency at high energy. Therefore, lots of simulation studies should be done on a variety of codes. Each of them has its own characteristics. For example, MAD can easily match quadrupole fast while it couldn’t do the multiparticle calculation. This paper will introduce some common and efficient code used to design linac and study beam dynamic performance.
	Poster THPAB186 [0.880 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB186
About •	paper received ※ 17 May 2021 paper accepted ※ 08 July 2021 issue date ※ 11 August 2021
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THPAB217	Lightsource Unified Modeling Environment (LUME), a Start-to-End Simulation Ecosystem	simulation, interface, FEL, electron	4212
	C.E. Mayes, A.L. Edelen, P. Fuoss, J.R. Garrahan, A. Halavanau, F. Ji, J. Krzywiński, W. Lou, N.R. Neveu, H.H. Slepicka SLAC, Menlo Park, California, USA J.C. E, C. Fortmann-Grote EuXFEL, Schenefeld, Germany C.M. Gulliford, D. Sagan Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA L. Gupta University of Chicago, Chicago, Illinois, USA A. Huebl, R. Lehé LBNL, Berkeley, USA
	SLAC is developing the Lightsource Unified Modeling Environment (LUME) for efficient modeling of X-ray free electron laser (XFEL) performance. This project takes a holistic approach starting with the simulation of the electron beams, to the production of the photon pulses, to their transport through the optical components of the beamline, to their interaction with the samples and the simulation of the detectors, and finally followed by the analysis of simulated data. LUME leverages existing, well-established simulation codes, and provides standard interfaces to these codes via open-source Python packages. Data are exchanged in standard formats based on openPMD and its extensions. The platform is built with an open, well-documented architecture so that science groups around the world can contribute specific experimental designs and software modules, advancing both their scientific interests and a broader knowledge of the opportunities provided by the exceptional capabilities of X-ray FELs.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB217
About •	paper received ※ 20 May 2021 paper accepted ※ 20 July 2021 issue date ※ 19 August 2021
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THPAB287	Providing Computing Power for High Level Controllers in MicroTCA-based LLRF Systems via PCI Express Extension	controls, LLRF, Ethernet, cavity	4363
	P. Nonn, A. Eichler, S. Pfeiffer, H. Schlarb, J.H.K. Timm DESY, Hamburg, Germany
	It is possible to connect the PCIe bus of a high performance computer to a MicroTCA crate. This allows the software on the computer to communicate with the modules in the crate, as if they were peripherals of the computer. This article will discuss the use of this feature in respect to accelerator control with a focus on High Level Controllers.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB287
About •	paper received ※ 19 May 2021 paper accepted ※ 26 July 2021 issue date ※ 16 August 2021
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THPAB295	Application of CMM Technology in Accelerator Magnet Detection	quadrupole, detector, hardware, radiation	4381
	S. Li, F.S. Chen, C.D. Deng, W. Kang, Y.Q. Liu, X. Wu, Y.W. Wu IHEP, Beijing, People’s Republic of China
	Accelerator magnet is one of the most difficult equipment in accelerator hardware system. With the improvement of physical requirements, more and more high technical requirements are put forward for magnets. This paper mainly introduces the new application of three coordinate measurement technology in the detection of accelerator magnet, and introduces the working process of CMM in the detection of accelerator magnet polar profile.
	Poster THPAB295 [0.677 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB295
About •	paper received ※ 14 May 2021 paper accepted ※ 02 September 2021 issue date ※ 29 August 2021
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Paper

Title

Other Keywords

Page

MOPAB047

A CAD Tool for Linear Optics Design: A Use Case Approach

controls, MMI, optics, GUI

205

J. Bengtsson
HZB, Berlin, Germany
T.J.R. Nicholls, W.A.H. Rogers
DLS, Oxfordshire, United Kingdom

The formula relevant for linear optics design of synchrotrons are derived systematically from first principles, i.e., an exercise in Hamiltonian dynamics. Equipped with these, the relevant use cases are then captured; for a streamlined approach. To enable professionals, i.e., software engineers, to efficiently prototype & architect a CAD tool available to mechanical engineers since the mid-1960s. In other words, robust design of a modern synchrotron is an exercise in/pursuit of the art of Engineering-Science.

Poster MOPAB047 [1.059 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB047

About •

paper received ※ 17 May 2021 paper accepted ※ 28 May 2021 issue date ※ 15 August 2021

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPAB322

Electronics for Bead-pull Measurement of Radio Frequency Accelerating Structures in LEHIPA

controls, cavity, rfq, interface

993

S. Rosily, S. Krishnagopal
Homi Bhbha National Institute (HBNI), DAE, Mumbai, India
S. Krishnagopal, S. Singh
BARC, Mumbai, India

For carrying out bead-pull characterisation of RFQ and DTL at the Low Energy High Intensity Proton Accelerator of BARC, a controller for simultaneous motion of 64 axis, tuners or post couplers, was developed. Also, a bead motion controller with integrated phase measurement sensor was developed. The paper discusses the requirements of the system, the architecture of the control systems, operation and results. The results obtained from the sensor was compared to that obtained using an independent USB VNA. The advantages of the system especially with addition of internal phase measurement sensor including minimising position error, flexibility in beadpull to selectively increase resolution at specified locations and ease of implementing auto-tuning algorithms are discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB322

About •

paper received ※ 20 May 2021 paper accepted ※ 24 May 2021 issue date ※ 14 August 2021

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MOPAB411

Quantifying DNA Damage in Comet Assay Images Using Neural Networks

network, proton, experiment, radiation

1233

S.J.K. Dhinsey, T. Greenshaw, C.P. Welsch
The University of Liverpool, Liverpool, United Kingdom
J.L. Parsons
Cancer Research Centre, University of Liverpool, Liverpool, United Kingdom
C.P. Welsch
Cockcroft Institute, Warrington, Cheshire, United Kingdom

Funding: This work was supported by the STFC Liverpool Centre for Doctoral Training on Data Intensive Science (LIV. DAT) under grant agreement ST/P006752/1.
Proton therapy for cancer treatment is a rapidly growing field and increasing evidence suggests it induces more complex DNA damage than photon therapy. Accurate comparison between the two treatments requires quantification of the DNA damage the cause, which can be assessed using the Comet Assay. The program outlined here is based on neural network architecture and aims to speed up analysis of Comet Assay images and provide accurate, quantifiable assessment of the DNA damage levels apparent in individual cells. The Comet Assay is an established technique in which DNA fragments are spread out under the influence of an electric field, producing a comet-like object. The elongation and intensity of the comet tail (consisting of DNA fragments) indicate the level of damage incurred. Many methods to measure this damage exist, using a variety of algorithms. However, these can be time consuming, so often only a small fraction of the comets available in an image are analysed. The automatic analysis presented in this contribution aims to improve this. To supplement the training and testing of the network, a Monte Carlo model will also be presented to create simulated comet assay images.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB411

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paper received ※ 19 May 2021 paper accepted ※ 09 June 2021 issue date ※ 16 August 2021

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TUPAB166

A New Design of a Dressed Balloon Cavity with Superior Mechanical Properties

cavity, multipactoring, SRF, linac

1769

R.A. Kostin, C. Jing, S. Ross
Euclid Beamlabs, Bolingbrook, USA
I.V. Gonin, T.N. Khabiboulline, G.V. Romanov, V.P. Yakovlev
Fermilab, Batavia, Illinois, USA
M.P. Kelly
ANL, Lemont, Illinois, USA
R.E. Laxdal
TRIUMF, Vancouver, Canada

Funding: Work supported by the SBIR program of the U.S. Department of Energy, under grant DE-SC0020781
Superconducting spoke cavities are prone to multipactor - resonant raise of a number of electrons due to secondary emission. Recently proposed and tested by TRIUMF balloon-type spoke cavity showed an outstanding multipactor (MP) suppression property but unfortunately serious Q degradation at high fields. A new fully developed design of a dressed balloon cavity which can be used for any proton linac SSR2 section is developed. The design incorporates additional EP ports for high Q-factor demonstration. Superior properties are demonstrated, such as effective multipactor suppression, 40% lower Lorentz force coefficient, zero sensitivity to external pressure. This paper presents the results of coupled structural Multiphysics analysis, and engineering design of the dressed balloon cavity with EP ports.

Poster TUPAB166 [1.394 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB166

About •

paper received ※ 15 May 2021 paper accepted ※ 21 June 2021 issue date ※ 01 September 2021

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TUPAB248

A Parallel Time Domain Thermal Solver for Transient Analysis of Accelerator Cavities

cavity, gun, simulation, background

2030

C.-K. Ng, L. Ge, Z. Li, L. Xiao
SLAC, Menlo Park, California, USA

Funding: Work supported by US DOE under contract AC02-76SF00515.
Simulation of thermal effects in accelerator cavity is normally performed assuming steady state solution where a static thermal solver suffices to evaluate temperature gradients and impacts on mechanical design. However, during the rf pulse ramp up or the machine system cool-down process, when the field in the cavity changes rapidly, transient effects need to be taken into account. A parallel time domain thermal solver has been developed in the finite element multi-physics code suite ACE3P with integrated electromagnetic, thermal and mechanical modeling capabilities. The implementation takes advantage of the parallel computation infrastructure of ACE3P and shares most of the ingredients in mesh generation, matrix assembly, time advancement scheme and postprocessing. In this paper, we will outline the finite element formulation of the transient thermal problem and verify the implementation against analytical solutions and existing numerical results. The thermal solver has also been coupled to ACE3P mechanical solver, allowing stress and strain analysis during the transient stage. Application of the transient thermal solver to realistic accelerator cavities will be presented.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB248

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paper received ※ 19 May 2021 paper accepted ※ 25 August 2021 issue date ※ 02 September 2021

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TUPAB300

Ion Source Optimization Using Bi-Objective Genetic and Matrix-Profile Algorithm

ion-source, controls, experiment, ECR

2190

W. Geithner, Z. Andelkovic, O. Geithner, F. Herfurth, V. Rapp
GSI, Darmstadt, Germany
A. Neméth
Atato, Alzenau, Germany
A. Van Benschoten
MPF, Plymouth, Minnesota, USA
F. Wilhelmstötter
emarsys, Vienna, Austria

Employing the local ECR ion source of the FAIR phase 0 ion storage ring CRYRING@ESR, we set up an IT-environment for on-line data processing and applications based on the data available from beam diagnostic instruments and input signals controlling the ion source. As a first proof of principle, we implemented a closed-loop optimization software controller based on bi-objective Genetic Optimization*. As one property for optimization we used the ion beam current measured with a Faraday-cup detector. As second optimization-property we the on-line processed time-resolved signal of the individual ion-source pulses employing the relatively new Matrix-Profile Algorithm** which provides a measure for the shot-by-shot variability of the consecutive pulses. We will report on the status of the data logging framework, the implementation of related software programs and the results of first tests.
* Wilhelmstötter, F.: Jenetics advanced genetic algorithm, online http://jenetics.io
** Matrix Profile Foundation. Homepage, online https://github.com/matrix-profile-foundation

Poster TUPAB300 [5.485 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB300

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paper received ※ 01 June 2021 paper accepted ※ 21 June 2021 issue date ※ 16 August 2021

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TUPAB412

New 3 MeV and 7 MeV Accelerators for Cargo Screening and NDT

electron, target, gun, linac

2491

S. Proskin, D. Fischer, A.V. Mishin
Varex Imaging, Salt Lake City, USA

For decades evaluating of cargo and non-destructive testing of objects have been utilizing high energy systems based on particle accelerators. End users wish for lower prices, better image quality, and convenience of utilization. In recent years Varex Imaging, world leader in innovation, development, and manufacture of X-ray imaging component solutions, has been developing a series of new accelerator products with improved parameters and a goal of replacing existing dated systems and growing of emerging markets. New S-band energy regulated 3 MeV and 7 MeV linear accelerators have been designed, tested at Varex Imaging and their customer sites. Novel linacs benefit is in dramatically increased output, reduced beam spot, longer operation, and improved versatility. Authors will outline recent progress and future endeavors in linear accelerator development with regards to improvement of accelerating structures, X-ray targets, and corresponding RF components*.
This work would have not been successful without outstanding contribution of the whole Linac Group of Varex Imaging and established partnerships with our customers

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB412

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paper received ※ 18 May 2021 paper accepted ※ 02 June 2021 issue date ※ 18 August 2021

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WEPAB309

Study and Design of the Appropriate High-Performance Computing System for Beamline Data Analysis Application at Iranian Light Source Facility (ILSF)

hardware, experiment, data-analysis, network

3399

A. Khaleghi, M. Akbari
ILSF, Tehran, Iran
H. Haedar, K. Mahmoudi, M. Takhttavani
IKIU, Qazvin, Iran
S. Mahmoudi
Sharif University of Technology (SUT), Tehran, Iran

Data analysis is a very important step in doing experiments at light sources, where multiple application and software packages are used for this purpose. In this paper we have reviewed some software packages that are used for data analysis and design at Iranian Light Source Facility then according to their processing needs, after taking in mind different HPC scenarios a suitable architecture for deployment of the ILSF HPC is presented. The proposed architecture is a cluster of 64 computing nodes connected through Ethernet and InfiniBand network running a Linux operating system with support of MPI parallel environment.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB309

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paper received ※ 19 May 2021 paper accepted ※ 23 July 2021 issue date ※ 01 September 2021

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WEPAB310

Study and Design of a High-Performance Computing Infrastructure for Iranian Light Source Facility Based on the Accelerator Physicists and Engineers’ Applications Requirements

network, hardware, Ethernet, simulation

3402

K. Mahmoudi, H. Haedar, A. Khaleghi
IKIU, Qazvin, Iran
M. Akbari, A. Khaleghi
ILSF, Tehran, Iran
S. Mahmoudi
IUST, Narmac, Tehran, Iran

Synchrotron design and operation are one of the complex tasks which requires a lot of precise computation. As an example, we could mention the simulations done for calculating the impedance budget of the machine which requires a notable amount of computational power. In this paper we are going to review different HPC scenarios suitable for this matter then we will present our design of a suitable HPC based on the accelerator physicists and engineers’ needs. Going through different HPC scenarios such as shared memory architectures, distributed memory architectures, cluster, grid and cloud computing we conclude implementation of a dedicated computing cluster can be desired for ILSF. Cluster computing provides the opportunity for easy and saleable scientific computation for ILSF also another advantage is that its resources can be used for running cloud or grid computing platforms as well.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB310

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paper received ※ 19 May 2021 paper accepted ※ 19 July 2021 issue date ※ 12 August 2021

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WEPAB407

An Innovative Eco-System for Accelerator Science and Technology

neutron, controls, ion-source, framework

3660

C. Darve, J.B. Andersen, S. Salman
ESS, Lund, Sweden
B. Nicquevert, S. Petit
CERN, Geneva, Switzerland
M. Stankovski
LINXS, Lund, Sweden

The emergence of new technologies and innovative communication tools permits us to transcend societal challenges. While particle accelerators are essential instruments to improve our quality of life through science and technology, an adequate ecosystem is essential to activate and maximize this potential. Research Infrastructure (RI) and industries supported by enlightened organizations and education, can generate a sustainable environment to serve this purpose. In this paper, we will discuss state-of-the-art infrastructures taking the lead to reach this impact, thus contributing to economic and social transformation.

Poster WEPAB407 [61.076 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB407

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paper received ※ 19 May 2021 paper accepted ※ 02 July 2021 issue date ※ 18 August 2021

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THPAB053

Magnetic Field Calculation of Planar SCUs Using ANSYS Maxwell

undulator, photon, FEL, software-tool

3868

Y. Shiroyanagi, E.A. Anliker, Q.B. Hasse, H. Hu, Y. Ivanyushenkov, M. Kasa, I. Kesgin
ANL, Lemont, Illinois, USA

Funding: This work was supported by U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.
The Advanced Photon Source (APS) Upgrade includes a 4.8-m-long superconducting undulator (SCU) cryostat containing two 1.9-m-long, 16.5-mm-period planar NbTi undulator magnets. The magnetic and mechanical design of this magnet follows the design of the existing 1.1-m-long, 18-mm-period planar SCU that is currently in operation at the APS *. Although OPERA is a reliable standard software tool for magnetic field calculations, ANSYS Maxwell 3D has the advantage of calculating a large and complex geometry. In this paper, first, the magnetic field map, including the peak field and end fields, is bench-marked against the magnetic measurement data of the existing planar SCU18-1. Then, corrector current optimization is presented for the 1.5-m-long, 21-mm-period planar SCU. Finally, a magnetic field model of a full-scale, 1.9-m-long planar SCU is presented.
* Y. Ivanyushenkov et al., Phys. Rev. Accel. Beams 20, 100701 (2017).

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB053

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paper received ※ 18 May 2021 paper accepted ※ 18 June 2021 issue date ※ 11 August 2021

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THPAB134

Development and Analysis of Software for the Numerical Simulation of Field Emission Electron Sources

electron, simulation, injection, electronics

4024

N.S. Kakorin, K.A. Nikiforov
Saint Petersburg State University, Saint Petersburg, Russia
N.V. Egorov
St. Petersburg State University, St. Petersburg, Russia

Funding: The reported study was funded by RFBR, project number 20-07-01086.
The open-source DAISI C++ package (Design of Accelerators, optImizations and SImulations) is extended with the ability to simulate the operation of electron sources in the field emission mode, with the user-defined initial distribution of emitted electrons velocities, as a model parameter, and with the automated calculation of current-voltage characteristics. Particles injection scheme is suggested. Computational experiments are performed for silicon carbide field emission electron source nanostructure with bimodal energy spectrum, revealed from experimental study, and comparative analysis with Maxwell distribution is presented.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB134

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paper received ※ 20 May 2021 paper accepted ※ 27 July 2021 issue date ※ 17 August 2021

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THPAB138

FEbreak: A Comprehensive Diagnostic and Automated Conditioning Interface for Analysis of Breakdown and Dark Current Effects

controls, cavity, FPGA, real-time

4027

M.E. Schneider, S.V. Baryshev
Michigan State University, East Lansing, Michigan, USA
R.L. Fleming, D. Gorelov, J.W. Lewellen, E.I. Simakov
LANL, Los Alamos, New Mexico, USA
E. Jevarjian
MSU, East Lansing, Michigan, USA

Funding: DE-AC02-06CH11357, No. DE-SC0018362, DE-NA-0003525, DE-AC52-06NA25396, LA-UR-21-20613
As the next generation of accelerator technology pushes towards being able to achieve higher and higher gradients there is a need to develop high-frequency structures that can support these fields *. The conditioning process of the structures and waveguides to high gradient is a labor-intensive process, its length increases as the maximum gradient is increased. This results in the need to automate the conditioning process. This automation must allow for high accuracy calculations of the breakdown probabilities associated with the conditioning process which can be used to instruct the conditioning procedure without the need for human intervention. To automate the conditioning process at LANL’s high gradient C-band accelerator test stand we developed FEbreak that is a breakout probability and conditioning automation software that is a part of the FEmaster series **, ***, ****. FEbreak directly interfaces with the rest of FEmaster to automate the data collection and data processing to not only analyze the breakdown probability but also the dark current effects associated with these high gradient structures.
* E. I. Simakov Nuc. Inst. and Meth, in Phy. Research Section A: Acc. Spec, 907 221 (2019)
** E. Jevarjian arXiv:2009.13046
*** T. Y. Posos arXiv:2012.03578
**** M. Schneider arXiv:2012.10804

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB138

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paper received ※ 18 May 2021 paper accepted ※ 02 July 2021 issue date ※ 16 August 2021

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THPAB186

Review of Proton Linac Beam Dynamic Simulation Code

linac, simulation, proton, space-charge

4137

X.Y. Feng, J. Peng
IHEP CSNS, Guangdong Province, People’s Republic of China

CSNS-II project design a linac accelerates 40 mA H⁻ beam from 3.8 MeV to 300 MeV, which should not only overcome the space-charge effect at low energy but also have high efficiency at high energy. Therefore, lots of simulation studies should be done on a variety of codes. Each of them has its own characteristics. For example, MAD can easily match quadrupole fast while it couldn’t do the multiparticle calculation. This paper will introduce some common and efficient code used to design linac and study beam dynamic performance.

Poster THPAB186 [0.880 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB186

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paper received ※ 17 May 2021 paper accepted ※ 08 July 2021 issue date ※ 11 August 2021

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THPAB217

Lightsource Unified Modeling Environment (LUME), a Start-to-End Simulation Ecosystem

simulation, interface, FEL, electron

4212

C.E. Mayes, A.L. Edelen, P. Fuoss, J.R. Garrahan, A. Halavanau, F. Ji, J. Krzywiński, W. Lou, N.R. Neveu, H.H. Slepicka
SLAC, Menlo Park, California, USA
J.C. E, C. Fortmann-Grote
EuXFEL, Schenefeld, Germany
C.M. Gulliford, D. Sagan
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
L. Gupta
University of Chicago, Chicago, Illinois, USA
A. Huebl, R. Lehé
LBNL, Berkeley, USA

SLAC is developing the Lightsource Unified Modeling Environment (LUME) for efficient modeling of X-ray free electron laser (XFEL) performance. This project takes a holistic approach starting with the simulation of the electron beams, to the production of the photon pulses, to their transport through the optical components of the beamline, to their interaction with the samples and the simulation of the detectors, and finally followed by the analysis of simulated data. LUME leverages existing, well-established simulation codes, and provides standard interfaces to these codes via open-source Python packages. Data are exchanged in standard formats based on openPMD and its extensions. The platform is built with an open, well-documented architecture so that science groups around the world can contribute specific experimental designs and software modules, advancing both their scientific interests and a broader knowledge of the opportunities provided by the exceptional capabilities of X-ray FELs.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB217

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paper received ※ 20 May 2021 paper accepted ※ 20 July 2021 issue date ※ 19 August 2021

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THPAB287

Providing Computing Power for High Level Controllers in MicroTCA-based LLRF Systems via PCI Express Extension

controls, LLRF, Ethernet, cavity

4363

P. Nonn, A. Eichler, S. Pfeiffer, H. Schlarb, J.H.K. Timm
DESY, Hamburg, Germany

It is possible to connect the PCIe bus of a high performance computer to a MicroTCA crate. This allows the software on the computer to communicate with the modules in the crate, as if they were peripherals of the computer. This article will discuss the use of this feature in respect to accelerator control with a focus on High Level Controllers.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB287

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paper received ※ 19 May 2021 paper accepted ※ 26 July 2021 issue date ※ 16 August 2021

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THPAB295

Application of CMM Technology in Accelerator Magnet Detection

quadrupole, detector, hardware, radiation

4381

S. Li, F.S. Chen, C.D. Deng, W. Kang, Y.Q. Liu, X. Wu, Y.W. Wu
IHEP, Beijing, People’s Republic of China

Accelerator magnet is one of the most difficult equipment in accelerator hardware system. With the improvement of physical requirements, more and more high technical requirements are put forward for magnets. This paper mainly introduces the new application of three coordinate measurement technology in the detection of accelerator magnet, and introduces the working process of CMM in the detection of accelerator magnet polar profile.

Poster THPAB295 [0.677 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB295

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paper received ※ 14 May 2021 paper accepted ※ 02 September 2021 issue date ※ 29 August 2021

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