Overview, commissioning, and lessons learned
Paper Title Page
MOAO01
Science at ESS and MAX IV  
 
  • K.H. Andersen
    ESS, Lund, Sweden
 
  The co-location of ESS and MAX IV in Lund will provide European and Swedish researchers with access to leading infrastructures for both x-ray and neutron science, as well as unique opportunities for synergies. An overview and exam- ples are given of the scientific research which will be enabled - the raison d’etre of the investment in infrastructure which is currently happening in Lund, rang- ing from biology and health to soft matter, chemistry, physics and engineering. These are all key research areas with scientific and societal impact for driving Scandinavian and European competitiveness within the global landscape.  
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MOAO02 Beam Instrumentation and Diagnostics for High Luminosity LHC 1
 
  • M. Krupa
    CERN, Geneva, Switzerland
 
  The High Luminosity LHC projects aims to increase the integrated luminosity of the LHC experiments by an order of magnitude. New and upgraded beam instrumentation is being developed to cope with much brighter beams and to provide the additional novel diagnostics required to assure safe and efficient operation under the new LHC configuration. This contribution discusses the various ongoing developments and reports on the results obtained with prototypes for transverse position, intra-bunch position, transverse size and profile, and beam halo monitoring.  
slides icon Slides MOAO02 [15.308 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOAO02  
About • paper received ※ 05 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOAO03 Overview on the Diagnostics for EBS-ESRF 9
 
  • L. Torino, N. Benoist, F. Ewald, E. Plouviez, J. Poitou, B. Roche, K.B. Scheidt, F. Taoutaou, F. Uberto
    ESRF, Grenoble, France
 
  On December 2018 the ESRF was shut down and the 28 years old storage ring was entirely dismantled in the following months. A new storage ring, the Extremely Brilliant Source (EBS), that had been pre-assembled in 2017 and 2018, is presently being installed and the commissioning will start in December 2019. EBS will achieve a much reduced horizontal emittance, from 4 nm to 150 pm, and will also provide the X-ray users with a more coherent synchrotron radiation beam. In this paper, we present an overview of the diagnostics systems for this new storage ring.  
slides icon Slides MOAO03 [40.660 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOAO03  
About • paper received ※ 03 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOBO01 Overview of the Beam Instrumentation and Commissioning Results from the BNL Low Energy RHIC Electron Cooling Facility 14
 
  • T.A. Miller, Z. Altinbas, D. Bruno, J.C. Brutus, M.R. Costanzo, L. DeSanto, C. Degen, K.A. Drees, A.V. Fedotov, W. Fischer, J.M. Fite, D.M. Gassner, X. Gu, J. Hock, R.L. Hulsart, P. Inacker, J.P. Jamilkowski, D. Kayran, J. Kewisch, C. Liu, K. Mernick, R.J. Michnoff, M.G. Minty, S.K. Nayak, L.K. Nguyen, P. Oddo, R.H. Olsen, M.C. Paniccia, W.E. Pekrul, I. Pinayev, V. Ptitsyn, V. Schoefer, S. Seletskiy, H. Song, A. Sukhanov, P. Thieberger, J.E. Tuozzolo, D. Weiss
    BNL, Upton, Long Island, New York, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Con-tract No. DE-AC02-98CH10886 with the U.S. Department of Energy
The Low Energy RHIC Electron Cooling (LEReC) facility at BNL demonstrated, for the first time, cooling of ion beams using a bunched electron beam from an SRF accelerating cavity and photoinjector. LEReC is planned to be operational to improve the luminosity of the Beam Energy Scan II physics program in RHIC in the following two years. In order to establish cooling of the RHIC Au ion beam using a 20 mA, 1.6 MeV bunched electron beam; absolute energy, angular and energy spread, trajectory and beam size were precisely matched. A suite of instrumentation was commissioned that includes a variety of current transformers, capacitive pick-up for gun high voltage ripple monitor, BPMs, transverse and longitudinal profile monitors, multi-slit and single-slit scanning emittance stations, time-of-flight and magnetic field related energy measurements, beam halo & loss monitors and recombination monitors. The commissioning results and performance of these systems are described, including the latest design efforts of high-power electron beam transverse profile monitoring using a fast wire scanner, residual gas beam induced fluorescence monitor, and Boron Nitride NanoTube (BNNT) screen monitor
 
slides icon Slides MOBO01 [17.119 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOBO01  
About • paper received ※ 05 September 2019       paper accepted ※ 11 September 2019       issue date ※ 10 November 2019  
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MOBO02 Beam Instrumentation at the Fermilab IOTA Ring 21
 
  • N. Eddy, D.R. Broemmelsiek, K. Carlson, D.J. Crawford, J.S. Diamond, D.R. Edstrom, B.J. Fellenz, M.A. Ibrahim, J.D. Jarvis, V.A. Lebedev, S. Nagaitsev, J. Ruan, J.K. Santucci, A. Semenov, V.D. Shiltsev, G. Stancari, A. Valishev, D.C. Voy, A. Warner
    Fermilab, Batavia, Illinois, USA
  • N. Kuklev, I. Lobach
    University of Chicago, Chicago, Illinois, USA
  • S. Szustkowski
    Northern Illinois University, DeKalb, Illinois, USA
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
The Integrable Optics Test Accelerator (IOTA) is a storage ring at the end of the Fermilab Accelerator Science and Technology (FAST) facility. The complex is intended to support accelerator R&D for the next generation of particle accelerators. The IOTA ring is currently operating with 150 MeV electrons injected from the FAST Linac and will also receive 2.5 MeV protons from the IOTA Proon Injector currently be installed. The current instrumentation and results along from the first electron commissioning run will be presented along with future plans.
 
slides icon Slides MOBO02 [47.588 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOBO02  
About • paper received ※ 09 September 2019       paper accepted ※ 10 September 2019       issue date ※ 10 November 2019  
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MOBO03
Overview of LIPAc Beam Instrumentation for the Initial Accelerator Commissioning  
 
  • D. Jimenez-Rey, J. Castellanos, J.M. García, D. Gavela, A. Ibarra, A. Marqueta, L.M. Martínez, J. Mollá, I. Podadera, A. Ros, R. Varela, V. Villamayor
    CIEMAT, Madrid, Spain
  • P. Abbon, B. Bolzon, T. Chaminade, J.F. Denis, A. Gaget
    CEA-DRF-IRFU, France
  • T. Akagi, K. Kondo, K. Sakamoto, Y. Shimosaki, M. Sugimoto, S. Takahiro
    QST, Aomori, Japan
  • L. Bellan, M. Comunian, E. Fagotti, F. Grespan, M. Poggi, F. Scantamburlo
    INFN/LNL, Legnaro (PD), Italy
  • P. Cara, A. Marqueta
    Fusion for Energy, Garching, Germany
  • Y. Carin, H. Dzitko, A. Jokinen, I.M. Moya
    F4E, Germany
  • J. Marroncle
    CEA-IRFU, Gif-sur-Yvette, France
  • O. Nomen
    IREC, Sant Adria del Besos, Spain
  • A. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
 
  Funding: This work has been supported by the Spanish Government in the frame of the Broader Approach Agreement
The commissioning of the high power deuterium accelerator of Linear IFMIF Prototype Accelerator, LIPAc, is presently under progress. During the so-called Phase B, the accelerator is operating with a high current pulsed proton and deuteron. The Phase B operation has the goals of fulfilling an exhaustive characterization of equipment and machine parameters in pulsed beam operation up to 5 MeV and 125 mA at Low Duty Cycle. The LIPAc beam diagnostics are aimed to demonstrate at this first stage of the commissioning the correct performance of the accelerator and are used for a complete characterization of the accelerator matching and tuning parameters. The characterization and calibration of beam diagnostics developed are providing relevant feedback of the accelerator operation. Measurements of the centroid position, beam profile, energy, intensity or emittance have been acquired and analyzed. The experimental results gathered have been compared with beam dynamics simulations. In this contribution, an overview of the main results provided by the beam diagnostics during Phase B operation in proton will be shown, together with the status of each instrument.
 
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MOCO04 Overview of Bunch-Resolved Diagnostics for the Future BESSY VSR Electron-Storage Ring 49
 
  • G. Schiwietz, J.G. Hwang, M. Koopmans, M. Ries
    HZB, Berlin, Germany
 
  The upgrade of the BESSY II light source in Berlin towards the Variable pulse-length Storage-Ring BESSY VSR will lead to a complex fill pattern. This involves co-existing electron bunches with significant variations of bunch-length, bunch charge as well as charge density. Among many other boundary conditions, this calls for bunch resolved measurements with sub-ps time resolution and micrometer spatial resolution. Currently, we are constructing a diagnostic platform connected to three new dipole beamlines for visible light as well as THz measurements. The mid-term aim is a 24/7 use of beam-diagnostic tools and the development of advanced methods for specific purposes. Recently, we have set-up a sub-ps streak camera* and we are investigating other innovative methods for bunch-length** as well as lateral size determination using visible light*** at the first of our new diagnostic dipole beamlines. Preliminary results as well as our concepts for achieving high sensitivity, good signal-to-noise ratio and time resolution will be presented and discussed at the conference.
* G.Schiwietz et al., J.Phys.:Conf. Series 1067, 072005 (2018)
** T.Mitsuhashi, M.Tadano, Proc. of EPAC’02, Paris, France, p. 1936
*** J.Breunlin et al., NIM- A803, pp.55 (2015) &refs. therein
 
slides icon Slides MOCO04 [10.924 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOCO04  
About • paper received ※ 04 September 2019       paper accepted ※ 08 September 2019       issue date ※ 10 November 2019  
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MOPP034 Beam Instrumentation Challenges for the Fermilab PIP-II Accelerator 180
 
  • V.E. Scarpine, N. Eddy, D. Frolov, M.A. Ibrahim, L.R. Prost, R.M. Thurman-Keup
    Fermilab, Batavia, Illinois, USA
 
  Funding: This work was supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359.
Fermilab is undertaking the development of a new 800 MeV superconducting RF linac to replace it’s present normal conducting 400 MeV linac. The PIP-II linac warm front-end consists of an ion source, LEBT, RFQ and MEBT which includes an arbitrary pattern bunch chopper, to generate a 2.1 MeV, 2mA H beam. This is followed immediately by a series of superconducting RF cryomodules to produce a 800 MeV beam. Commissioning, operate and safety present challenges to the beam instrumentation. This paper describes these beam instrumentation challenges and the choices made for PIP-II.
 
poster icon Poster MOPP034 [0.999 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP034  
About • paper received ※ 10 September 2019       paper accepted ※ 11 September 2019       issue date ※ 10 November 2019  
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MOPP035 Electron Beam Diagnostics Concept for the LWFA Driven FEL at ELI-Beamlines 185
 
  • K.O. Kruchinin, D. Kocon, A.Y. Molodozhentsev
    ELI-BEAMS, Prague, Czech Republic
  • A. Lyapin
    JAI, Egham, Surrey, United Kingdom
 
  Uniquely short high energy electron bunches produced by compact Laser Wakefield Accelerators (LWFA) are attractive for the development of new generation Free Electron Lasers (FEL). Although the beam quality of LWFA is still significantly lower than provided by conventional accelerators, with persistent progress seen in the area of laser plasma acceleration, they have a great potential to be considered the new generation drivers for FELs and even colliders. A new LWFA based FEL project called "LUIS" is currently being commissioned at ELI-beamlines in Czech Republic. LUIS aims to demonstrate a stable generation of X-ray photons with a wavelengths of 6 nm and lower, suitable for user applications. Electron beam diagnostics are absolutely crucial for achieving LUIS’s aims. Low charge, poor beam stability and other beam properties inherent for a LWFA require rethinking and adaptation of the conventional diagnostic tools and, in some cases, development of new ones. In this paper we provide an overview of the electron beam instrumentation in LUIS with a focus on the current challenges and some discussion of the foreseen future developments.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP035  
About • paper received ※ 04 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOPP036 SPIRAL2 Diagnostic Qualifications with RFQ beams 189
 
  • C. Jamet, T. Andre, V. Langlois, T. Le Ster, G. Ledu, P. Legallois, S. Leloir, F. Lepoittevin, S. Loret, C. Potier de courcy, R.V. Revenko
    GANIL, Caen, France
 
  The SPIRAL2 accelerator, built on the GANIL’s facility, at CAEN in FRANCE is dedicated to accelerate light and heavy ion beams up to 5mA and 40 MeV. The continuous wave accelerator is based on two ECR ion sources, a RFQ and a superconducting LINAC. The beam commissioning of the RFQ finished at the end of 2018. This paper presents the Diagnostic-Plate installed behind the RFQ, with all associated accelerator diagnostics. Diagnostic monitors, measured beam parameters, results are described and analyzed. A brief presentation of the next steps is given.  
poster icon Poster MOPP036 [1.558 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP036  
About • paper received ※ 03 September 2019       paper accepted ※ 08 September 2019       issue date ※ 10 November 2019  
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MOPP037 Status of Beam Instrumentation for FAIR HEBT 194
 
  • M. Schwickert, P. Boutachkov, T. Hoffmann, H. Reeg, A. Reiter, B. Walasek-Höhne
    GSI, Darmstadt, Germany
 
  At present the Facility for Antiproton and Ion Research (FAIR) is under construction at the GSI site. As part of the FAIR project the beamlines of the High Energy Beam Transport (HEBT) section interconnect the synchrotrons, storage rings and experimental caves. The large range of beam energies (MeV to GeV) and beam intensities up to 1012 particles per pulse for uranium, or up to 2·1013 particles per pulse for protons, demand in many cases for purpose-built beam diagnostic devices. Presently, the main diagnostic components are being manufactured by international in-kind partners in close collaboration with GSI. This contribution presents an overview of the beam instrumentation layout of the FAIR HEBT and summa-rizes the present status of developments for HEBT beam diagnostics. We focus on the status of the foreseen beam current transformers, particle detectors, scintillating screens and profile grids.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP037  
About • paper received ※ 04 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOPP038 The Beam Diagnostics Test Bench for the Commissioning of the Proton Linac at FAIR 197
 
  • S. Udrea, P. Forck, C.M. Kleffner, K. Knie, T. Sieber
    GSI, Darmstadt, Germany
 
  A dedicated proton injector for FAIR (the pLinac) is presently under construction at GSI Darmstadt. This accelerator is designed to deliver a beam current of up to 70 mA with a final energy of 68 MeV for the FAIR anti-proton program. For the commissioning of the pLinac a movable beam diagnostics test bench will be used to characterize the proton beam at different locations during the stepwise installation. The test bench will consist of all relevant types of diagnostic devices as BPM’s, ACCT’s, SEM grids, a slit-grid emittance device and a bunch shape monitor. Moreover, a magnetic spectrometer is supposed to measure the energy spread of the proton beam. Point-to-point imaging is foreseen to enable high energy resolution independently on the transverse emittance. Due to the limited space in the accelerator tunnel a special design must be chosen with the inclusion of quadrupole magnets. The present contribution gives an overall presentation of the test bench and its devices with a special emphasis on the magnetic spectrometer design.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP038  
About • paper received ※ 04 September 2019       paper accepted ※ 09 September 2019       issue date ※ 10 November 2019  
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MOPP039
Overview of Beam Diagnostics System for Heavy Ion Accelerator Facility, RAON  
 
  • H.J. Woo
    IBS, Daejeon, Republic of Korea
 
  The ultimate goal of the superconducting LINAC at RISP is to accelerate uranium and proton beams up to 200 MeV/u and 600 MeV, with a maximum beam currents of 8.3 puA and 660 puA, respectively. The driver linac is divided into several sections: low energy superconducting linac SCL1 for stable ions and SCL3 for rare isotopes, charge stripper section, and high energy superconducting linac (SCL2). Various types of beam diagnostic devices such as beam current monitor, beam position monitor, beam profile monitor, beam phase monitor, and beam loss monitor, etc. are required for the setting of accelerator parameters, the monitoring and control of beam acceleration and transport, and improvement of accelerator system. The arrangement of beam diagnostic devices was initially based on the result of beam dynamics calculation, and now the overall layout becomes almost settled. More than 600 devices will be installed for commissioning and normal operation. This report introduces the overall layout of the beam diagnostic system and presents status of the system construction including a commissioning diagnostic station to characterize the accelerated beam from the superconducting LINAC.  
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MOPP040
Introduction and Test of the In-air Beam Diagnostics at the Komac Proton Irradiation Test Facility  
 
  • S.P. Yun, H.S. Kim, Y.M. Kim, H.-J. Kwon, Y.G. Song
    Korea Atomic Energy Research Institute (KAERI), Gyeongbuk, Republic of Korea
 
  Funding: This work has been supported through KOMAC (Korea Multi-purpose Accelerator Complex) operation fund of KAERI by MSIT (Ministry of Science and ICT)
At KOMAC (Korea Multi-purpose Accelerator Complex), a 100-MeV proton linac has been started to operate since 2013. Nowadays, the constructions of the total six beamlines are completed. Among them, 20 MeV or 100 MeV proton beam has been provided to users through the three beamlines. The proton beam irradiation facilities could provide the proton beam and the available proton energy range is from 20 MeV to 100 MeV. The proton irradiation is performed in the air, therefore, the intensity and profile and position of provided proton beam should be measured in the air. For in-situ beam intensity and profile monitoring, in-air type ACCT, the large area transmission ionization chamber and multi-wire grid were adopted to the new experimental set-up for the proton beam irradiation test. As a reference dosimetry, the farmer-type ionization chamber and in-air type faraday-cup will be utilized for the fluence and dose measurement at the sample position. In this paper, we will introduce the operation status of the proton beam irradiation facility at KOMAC, the test results of in-air beam diagnostics tool and their lessons in these facilities will be given.
 
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MOPP042 Beam Diagnostics for the Multi-MW High Energy Beam Transport Line of DONES 201
 
  • I. Podadera, A. Ibarra, D. Jiménez-Rey, J. Mollá, C. Oliver, R. Varela, V. Villamayor
    CIEMAT, Madrid, Spain
  • O. Nomen, D. Sánchez-Herranz
    IREC, Sant Adria del Besos, Spain
 
  Funding: Work carried out within the framework of the EUROfusion Consortium and funded from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No 633053.
In the frame of the material research for future fusion reactors, the construction of a simplified version of the IFMIF plant, the so-called DONES (Demo-Oriented Neutron Early Source), is under preparatory phase to allow materials testing with sufficient radiation damage for the new design of DEMO. The DONES accelerator system will deliver a deuteron beam at 40 MeV, 125 mA. The 5 MW beam will impact onto a lithium flow target to form an intense neutron source. One of the most critical tasks of the accelerator is the beam diagnostics along high energy beam transport, especially in the high radiation areas close to the lithium target. This instrumentation is essential to provide the relevant data for ensuring the high availability of the whole accelerator system, the beam characteristics and machine protection. Of outmost importance is the control of the beam characteristics impinging on the lithium curtain. Several challenging diagnostics are being designed and tested for that purpose. This contribution will report the present status of the design of the beam diagnostics, focusing on the high radiation areas of the high energy beam transport line.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP042  
About • paper received ※ 04 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOPP044 Status of the Faraday Cups for the ESS linac 206
 
  • E.M. Donegani, C.S. Derrez, T.J. Grandsaert, T.J. Shea
    ESS, Lund, Sweden
  • I. Bustinduy, A. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
 
  The European Spallation Source (ESS) will be a 5 MW pulsed neutron source, relying on a 2 GeV linac delivering 2.86 ms long pulses with 14 Hz repetition rate. During the commissioning and the tuning phases of the ESS linac, four Faraday Cups (FC) serve as beam dumps and provide an absolute measurement of the proton beam current. This contribution summarizes the challenges in the design and production of all the FCs mainly requiring: - Thermo-mechanical analysis to keep heat load and mechanical stress below the mechanical limits; - Inclusion of an electron repeller to prevent the escape of secondary charged particles from the cup that would limit the accuracy of the current measurements; - Monte Carlo simulations to compute material activation, dose at contact and corresponding necessary shielding; - Design of high-resolution detection circuits for low current to fulfill the requirements on bandwidth, gain and noise. In addition, the performance of the LEBT FC during the commissioning of the ion source and LEBT is reported. The LEBT FC system is under continuous improvement and serves as benchmark for the protection from unwanted operation, and in case of actuator or cooling faults.  
poster icon Poster MOPP044 [1.121 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP044  
About • paper received ※ 04 September 2019       paper accepted ※ 08 September 2019       issue date ※ 10 November 2019  
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MOPP045 MAX IV Operations - Diagnostic Tools and Lessons Learned 210
 
  • B. Meirose, V. Abelin, B.E. Bolling, M. Brandin, R. Høier, A. Johansson, P. Lilja, J.S. Lundquist, S. Molloy, F. Persson, J.E. Petersson, R. Svärd
    MAX IV Laboratory, Lund University, Lund, Sweden
 
  In this contribution, I present some of the new beam diagnostic and monitoring tools developed by the MAX IV Operations Group. In particular, new BPM and accelerator tunes visualization tools and other simple but useful applications we have developed, such as our RF System Monitor, are presented. I also briefly share our experience with the development of audible alarms, which help operators monitor various parameters of the machine and explain how the implementation of all these tools have improved accelerator operations at MAX IV.  
poster icon Poster MOPP045 [2.879 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP045  
About • paper received ※ 04 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOPP046
Electron Beam Diagnostics for SLS2.0  
 
  • C. Ozkan Loch, R. Ischebeck, G.L. Orlandi, V. Schlott, A. Streun
    PSI, Villigen PSI, Switzerland
 
  In the near future the SLS storage ring will be upgraded for significantly higher brightness and coherence. Although the upgrade will require similar instrumentation to that already implemented for current SLS operation, significant changes in the number of devices, their specifications and their technical realizations will have to be made according to the specific requirements of SLS 2.0, using the newly available technologies and standardizations at PSI. This poster will provide an overview of the design, technical specifications, implementation and expected challenges of these systems. The beam position monitors and fast-orbit feedbacks are not included in this presentation.  
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MOPP047 Design and Development of Beam Diagnostics for an FFA-FFA Ring for ISIS-II Upgrade Studies 215
 
  • E. Yamakawa
    JAI, Oxford, United Kingdom
  • S. Machida, A. Pertica, C.C. Wilcox
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
 
  The ISIS-II project aims to deliver a new spallation neu- tron source by 2034, driven by a 1.2 GeV proton accelerator capable of delivering a beam power of 1.25 MW with a rep- etition rate of 50 Hz or higher. One of the options for this future accelerator is a Fixed Field alternating gradient Accelerator (FFA). To demonstrate the suitability of FFAs for use in a user facility such as ISIS, there is a plan to construct a smaller scale proof of concept machine: FETS-FFA. Developing beam diagnostics for the FETS-FFA ring presents a challenge due to a large orbit excursion and aperture ( 60 mm x 700 mm). Diagnostics must cover the full size of beam chamber whilst still providing measurement sensitivity and resolution comparable to that seen in the ISIS synchrotron. This paper presents the current design and development of beam diagnostics for the FETS-FFA ring, including finite element studies of Beam Position Monitors (BPMs) and Ionisation Profile Monitors (IPMs).  
poster icon Poster MOPP047 [9.355 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP047  
About • paper received ※ 03 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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MOPP048 Development of the Linac Extension Area 450-MeV Electron Test Beam Line at the Advanced Photon Source* 220
 
  • W. Berg, J.C. Dooling, S.H. Lee, Y. Sun, A. Zholents
    ANL, Lemont, Illinois, USA
 
  Funding: *Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-ACO2O6CH11357.
A low-emittance electron beam line for accelerator-based R&D hardware experimentation and study of novel accelerator techniques is under development at the injection linac of the Advanced Photon Source (APS). The Linac Extension Area (LEA) beam line will operate at the full 400 MeV energy of the APS linac. The electron beam is generated from a photo-cathode (PC) electron gun delivering 300 pC of charge with a 3 ps, rms bunch length and normalized beam emittance of ~ 1 micron. The bunch length can be compressed to 150 fs in a flexible chicane at a beam energy of 150 MeV. The APS linac contains an extensive set of conventional and advanced beam diagnostics including a recently commissioned s-band transverse deflecting cavity. The low-emittance electron beam is transported to an independent experimental tunnel enclosure that contains the LEA beam line. Implementing the LEA beam line separate from the APS injector complex allows for on-demand access to the area to perform work without interrupting beam operations of the APS. We discuss the overall scheme of the existing linac beam delivery & diagnostic systems, and report the design of the LEA beam line and initial planned experiments.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP048  
About • paper received ※ 05 September 2019       paper accepted ※ 09 September 2019       issue date ※ 10 November 2019  
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THBO02
Diagnostic Requirements for DLSRs (Diffraction Limited Synchrotron Radiation Sources)  
 
  • S. Takano
    JASRI, Hyogo, Japan
  • S. Takano, H. Tanaka
    RIKEN SPring-8 Center, Hyogo, Japan
 
  Synchrotron radiation sources are looking for performance upgrades by pursuing higher photon brilliance and coherence enabling innovations in various scientific and industrial fields. The trend is pushing the accelerator design to lower the beam emittance, towards the ultimate of diffraction limited condition in a short wavelength range of hard x-rays. This talk will overview the diagnostic requirements for DLSRs. For highlighted crucial diagnostic subjects, the talk will review the current performance of state-of-the-art diagnostic instruments. The talk will also show strategies to bridge the gaps achieving the diagnostic goals of the coming future light sources as well as technical challenges for the breakthrough.  
slides icon Slides THBO02 [4.178 MB]  
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