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Markus Schneider12/09/2022, 09:00
The High Intensity Proton Accelerator (HIPA) facility at PSI delivers a proton beam of 2 mA during routine operation and was tested up to 2.4 mA. The acceleration includes three stages: a Cockcroft-Walton, the Injector 2 cyclotron and the Ring cyclotron.
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The injector 2, commissioned in 1984, is a separated sector cyclotron with 4 sector magnets and 4 sections cavities. Two 50 MHz cavities... -
Jesús Ocampo12/09/2022, 09:25
ALBA is a 3rd generation 3 GeV synchrotron light source located in Barcelona, Spain. The RF system of the Storage Ring provides 3 MV of accelerating voltage with six 500 MHz HOM-damped cavities fed by two 80 kW IOTs each. The Booster RF system comprises a 50 kW SSPA and a 5 cell PETRA cavity. This presentation describes the performance of these systems and the upgrades performed in the last...
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Jorn Jacob12/09/2022, 09:50
After 25 years of service to users, the world's first 3rd generation storage ring light source at the ESRF was shut down in December 2018 to leave the space for the first high energy 4th generation ultra low emittance ring, the Extremely Brilliant Source EBS. The new machine was started as scheduled in December 2019 and fully commissioned by the end of February 2020. Service to users was...
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Kenneth Baptiste (LBNL)12/09/2022, 10:20
The Advanced Light Source (ALS) is in the midst of and upgrade, ALS-U, an upgrade which will replace the existing triple-bend achromat storage ring with a stronger focusing nine-bend achromat storage ring. The new storage ring’s small emittance and reduced dynamic aperture requires a new injection scheme. ALS-U has chosen an on-axis swap-out injection to exchange bunch trains between the...
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Eric Montesinos (CERN)12/09/2022, 11:10
Within the frame of our LHC Injector Upgrade program, CERN decided to build two new amplifiers of 2 MW cw operating at 200 MHz. These amplifiers are based on Solid State technology, and use Cavity Combiner systems to reach the required power levels. Availability being the key word with respect to beam operation, the amplifier architecture choices will be explained. After a review of the...
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Jorn Jacob12/09/2022, 12:10Solid state amplifiers
Details of the specification for the recent call for tender for 10 x 110 kW SSA at 352 MHz for the ESRF will be presented. They address a number of issues that were discovered in the course of the first procurement ever of 1 MW of SSA from industry, more than 10 years ago, and which we translated into special requirements for our 2021 specification. They are particular to a setup without high...
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Fu-Tsai Chung12/09/2022, 14:00Oral presentation 20' + 5'
It took a decade to develop the 500-MHz module for the Solid State Power Amplifier (SSPA) in NSRRC. Performance of a single module was gradually improved to reach a steady output power of 960W by using the RF chip IC-BLF578XR. Heat dissipation unit and high-efficiency power supply are key issues in improving integral performance (49.5% RF power) of the single module. A 110-module SSPA tower...
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Brian Holub (Brookhaven National Laboratory)12/09/2022, 14:25
The National Synchrotron Light Source II (NSLS-II) Storage Ring was originally commissioned in 2014 with two 310 kW CW Klystron transmitters supplying their respective cavities with RF power. Late in 2017 the process of procuring a third RF 310 kW CW transmitter for the Storage Ring was started. Proposals from multiple vendors offering both Klystron and Solid-State Amplifier (SSA) solutions...
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Shree Subhasish Basak (LBL)12/09/2022, 14:50
A solid state LDMOS FET based RF High Power Amplifier (HPA) with 60 kW CW RF output power , operating at 500 MHz, with a power gain ~ 80 dB is being designed and manufactured for the Accumulator Ring (AR) RF cavity in the ALS-U project at LBNL, through a joint effort with a commercial company, R&K. This paper presents the highlights of the important initial planning, installation site space...
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Myunghwan CHUN (PAL(Pohang Accelerator Laboratory)/POSTECH)12/09/2022, 15:15
The 4th Generation storage Ring (4GSR) as the second synchrotron light source in Korea was launched from 2021. The 4GSR is designed to be one of the world's best performance with a beam energy of 4 GeV / 400mA. Therefore the RF system is studied and designed with solid-state power amplifiers (SSPA) which are effective RF sources instead of tubes due to the broad studies and applications in the...
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Kyungtae Seol (IBS (Institue for Basic Science))12/09/2022, 16:10
The heavy-ion accelerator of the Rare Isotope Science Project (RISP) in Korea has been developed. There are three types of SRF cavity, which are 81.25MHz quarter-wave resonator (QWR), 162.5MHz half-wave resonator (HWR), 325MHz single-spoke resonator (SSR). There are 22 QWRs and 102 HWRs in the superconducting linac#3 (SCL3), and 69 SSR1s and 144 SSR2s in the superconducting linac#2 (SCL2). The...
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morten jensen (European Spallation Source ERIC)12/09/2022, 16:35High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
ESS will ultimately need 155 high power RF systems to deliver 5 MW of power to the proton beam. The first phase will consist of 91 systems which are currently being installed and tested, with the first systems already in operation to support cavity conditioning and beam operation. This talk will introduce the high level RF system design, key technologies, our strategy for installation, test...
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Mr Carlos Rosa12/09/2022, 17:05
In 2015 BTESA manufactured its first Solid State CW RF Amplifier (SSA) for Scientific applications, applying all the good practices learnt during 20 years of designing and manufacturing amplifiers for other applications, that is, industrialized design, careful thermal management, water cooling, high redundancy, hot pluggable modules, high availability and serviceability during operation....
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Dr Marcel Gaudreau (Diversified Technologies, Inc.), Michael Kempkes12/09/2022, 17:10
Diversified Technologies, Inc. (DTI) designed and developed a high stability modulator system for a commercial linear accelerator application. The DTI modulator delivers significant advantages in klystron performance through highly reliable functionality as well as flicker- and droop-free operation from 50-500 μs up to 400 Hz (duty limited). The main assemblies on the DTI system consist of a...
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riichiro kobana (R&K Company Limited)12/09/2022, 17:15
R&K Company Limited has achieved technological success in the fields of accelerators, mobile communications, plasma, EMC, and NMR/MRI. R&K's most differential feature is that it is a group of craftsmen and a manufacturing organization that values results obtained through actual trial and error.
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By carefully adjusting the latest technology based on these experiences and achievements, R&K has... -
Mirco Nedos (Cryoelectra GmbH)12/09/2022, 17:20
Cryoelectras 3rd generation of solid-state RF amplifiers (SSA) for synchrotron applications is presented in the frame of a poster. The SSA delivers up to 160 kW cw RF output power at 500 MHz. The amplifier is of industrial design regarding space and maintenance requirements. Together with its redundant architecture this allows for a 24/7 operation.
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The output power of the amplifier is... -
Alex Zaltsman13/09/2022, 08:30
Brookhaven National Laboratory’s future Electron Ion Collider (EIC) will be a complex system of accelerators providing high-luminosity, high-polarization, variable center-of-mass energy collisions between electrons, and protons or ions. The EIC requires over 70 RF cavities requiring more than 90 high-power RF amplifiers, with 34 of them of 400 kW CW. We will describe the EIC’s high-level...
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Peter Huelsmann13/09/2022, 08:55
Rough overview of how PETRA-IV will look like
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What are the plans for the HF systems
Fundamental-system: SSA-HOM-damped cavity
Harmonic system: SSA- HOM-damped cavity
Alternative ideas for a 3rd harmonic cavity -
Mr Victor Martinez Illamola (SCK CEN)13/09/2022, 09:20
SCK CEN (Studiecentrum voor kernenergie or Centre d'étude de l'énergie nucléaire) is building MINERVA on views of MYRRHA, an ADS (Accelerator Driving System) which will eventually enable transmutation of nuclear waste but also fundamental research.
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MINERVA LINAC will accelerate a proton beam current of 4mA@100 MeV in CW. The front-end will be composed by an injector with 20 NCRF (Normal... -
Mr Walther Borg (European Spallation Source ERIC)13/09/2022, 09:45
ESS is installing and testing the RF distribution systems including waveguide and coaxial components, circulators, RF loads for up to 155 high power RF systems; > 5000 RFDS components. This talk will present the early quality issues, waveguide tuning and how they were resolved. RFDS components are often considered trivial however, the initial high power operation revealed a number of serious...
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Mr Tomas Olsson (European Spallation Source ERIC)13/09/2022, 10:10New technology, new ideas, R&D, other technically interesting contributionsOral presentation 20' + 5'
ESS is deploying a number of different arc detector systems to protect the RF and distribution systems. ESS are currently installing and testing three different systems. The initial installation and early batches were based on commercial systems but we will also present the test results, motivation and performance parameters of the more recent arc detectors constructed at ESS. Early high power...
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Walid Helou (ITER Organization)13/09/2022, 11:05
In a steady-state nuclear fusion reactor of the tokamak type, high-power CW RF systems are envisaged, among other systems, to heat the plasma up to the required temperatures of 10-20 keV and to drive a non-inductive plasma-current which is required for the plasma confinement. This paper overviews the so-called Ion Cyclotron Range of Frequencies (ICRF) system of the International Thermonuclear...
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Carsten Weil (AFT microwave GmbH)13/09/2022, 11:40
With a heritage of more than 50 years AFT is a leading designer and manufacturer of high-performance ferrite-based microwave components and subsystems. The high-power product range includes microwave ferrites, circulators, isolators, loads, fast ferrite tuners and power variators for scientific particle accelerators, medical and industrial LINACs as well as for radar systems.
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Isolators... -
Ming-Chyuan Lin13/09/2022, 14:00
The TPS RF system consists of two RF plants. each at a power level of 300-kW, for the electron storage ring operation. The system performance and statistics on trip events in the recent years are presented. To improve the RF performance, some activities such as digital low level RF system and solid state amplifier are developed and implemented, whereas a spare 500-MHz superconducting RF...
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Mr Marco Di Giacomo (CEA-GANIL)13/09/2022, 14:25New technology, new ideas, R&D, other technically interesting contributionsOral presentation 20' + 5'
Multiport RFQ of several projects are powered by complex systems with several LLRF in master-slave configuration. No body seems promoting the architecture of parallel chains simply combined into the cavity, though this is commonly used in RF commercial amplifiers. The presentation aims at rising a discussion on the reasons of these complex architectures.
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Denis Beauregard (CLS)13/09/2022, 14:50
The Canadian Light Source (CLS) operates a single-cell CESR-B superconducting RF cavity system in the 2.9 GeV storage ring, powered by a 310 kW klystron.
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In recent years CLS has been making changes to its RF systems with the aim to improve reliability. The booster klystron has been replaced with a solid state amplifier.
CLS has worked with ALBA to replace the LLRF system for
the booster.... -
13/09/2022, 15:30Visit
Group leaves by bus from behind the Globe at 15:30 sharp
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13/09/2022, 15:30Visit
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13/09/2022, 15:55Visit
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13/09/2022, 16:50Visit
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13/09/2022, 16:50Visit
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13/09/2022, 17:45Visit
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13/09/2022, 18:00Visit
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13/09/2022, 18:10Visit
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Davide Aguglia (CERN)14/09/2022, 08:30
An overview of high voltage power supplies for tetrode, IOT and klystron amplifiers (DC and pulsed power), with an introduction of basic concepts in power electronics, design specificities for RF applications, and illustrations of CERN-designed RF power converters.
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Invited talk offered to Dr. Davide Aguglia, Electrical Power Converter Deputy group leader, and Fast Pulsed Converter section leader. -
John Moss (Oak Ridge National Laboratory)14/09/2022, 09:20
The Proton Power Upgrade (PPU) project at the Spallation Neutron Source (SNS) will double the available H- beam power from 1.4 to 2.8 MW by increasing the beam energy from 1.0 to 1.3 GeV and the beam current from 26 to 38 mA. The increase in beam current and energy drove the design decisions made for both the Normal Conducting Linac (NCL) and Superconducting Linac (SCL) Radio-frequency Systems...
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chiara marrelli (ESS)14/09/2022, 09:45
In order to reach 5 MW proton beam power, the ESS linac will be powered by 155 RF transmitters using different technologies. Most of these transmitters will use klystrons as amplifiers, and more precisely six 3 MW, 352 MHz klystrons in the normal conducting linac, and 120 1.5 MW, 704 MHz klystrons in the superconducting linac.
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The talk will give an overview of the ESS klystron-based systems,... -
Doug Horan14/09/2022, 10:10High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
The challenges faced in keeping the Advanced Photon Source 350MHz rf systems reliable will be discussed. This includes klystron performance and problems, troublesome intermittent fault conditions, HVPS system failures, and the effects ac power outages have on 27-year-old equipment.
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Stefan Choroba14/09/2022, 11:10High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
FLASH is a free electron laser driven by a superconducting linear accelerator. During the last shutdown for the FLASH2020+ upgrade several modifications have been made to the HPRF system. Two European XFEL type superconducting accelerator cryomodules with tailored RF power waveguide distribution have replaced two old lower performance modules. Another two old accelerator modules have been...
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Mr Kenneth Baptiste (LBNL), Angel Jurado (LBNL)14/09/2022, 11:35High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
The Advanced Light Source (ALS) has completed an upgrade on its storage ring RF system, which enabled various RF drive modes that can deliver up to 320kW power into two RF cavities through a motorized waveguide matrix. The system incorporates two 300kW klystrons, both are powered by -52.5 kV DC voltage via a fast-disconnect switch network, and are driven by a digital low-level RF control...
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Massamba DIOP14/09/2022, 12:00High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
In the SOLEIL storage ring, two cryomodules provide to the electron beam an accelerating voltage of 3-4 MV and a power of 575 kW at 352 MHz. Each cryomodule contains a pair of “HOM free” superconducting cavities, cooled with liquid Helium at 4.5 K, which is supplied by a single 350 W cryogenic plant. The RF power is provided by four solid state amplifiers (SSA), each delivering up to 180 kW....
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James Rose14/09/2022, 14:00High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
The NSLS-II light source has been operating since 2015 with two 500 MHz Superconducting cavities fed by Klystron based amplifiers providing in up to 1.8 MV of accelerating gradient and up to 310kW of RF power per system. A third 500 MHz system project was completed and installed in 2021 consisting of a superconducting cavity assembled in-house and a 320 kW cavity combined Solid State amplifier...
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Mr Bruno Lagoguez (European Spallation Source ERIC)14/09/2022, 14:25Solid state amplifiersOral presentation 20' + 5'
A solid state amplifier family has been developed to provide 30kW pulsed at 352 MHz for each of the three buncher cavities of the ESS proton linac. The presentation will give an overview of the amplifiers, with a focus on the installation and tests carried out. The amplifiers are now in operation having been used initially for cavity conditioning and recently for early operation with beam....
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Nuria Catalan Lasheras (CERN)14/09/2022, 14:50High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
14 years of LHC operation 300kW/400MHz klystrons
5 years of Linac4 operation a mix od recuperated LEP klystrons and new klystrons 1MW/352MHz-------- placeholder by D. Valuch --------
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Rutambhara Yogi14/09/2022, 15:15High Power RF System Status and Operating ExperienceOral presentation 20' + 5'
The European Spallation Source (ESS) will be the world’s most powerful pulsed neutron source by the end of the decade, which will accelerate a beam of protons with a beam current 62.5 mA to 2 GeV. The beam pulse width is 2.86 ms long and pulse repetition frequency is 14 Hz. The acceleration will be provided by 155 cavities, out of which 97 % of the cavities are superconducting.
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The first... -
Arash Kaftoosian14/09/2022, 16:10
ESS-Bilbao is a leading proton science research center in Spain that carries out different projects in particle accelerator field. One of the recently accomplished projects is a novel solid-state based RF power source as a replacement for an old klystron of the ECR ION Source (ISHP) that will feed an RFQ, also designed and developed at ESS-Bilbao, to accelerate proton beam up to 3MeV at its...
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Marcos Gaspar (Paul Scherrer Institut)14/09/2022, 16:35
We present the status of the RF upgrade of the SLS2.
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We will describe the progress in different areas of the SLS2 accelerator complex concentrating on the RF infrastructure.
The chronology of the upgrade including the commissioning of components is also presented. -
Cristina Pasotti (Elettra-Sincrotrone Trieste S.C.p.A.)14/09/2022, 17:00
Elettra has delivered 27 Radio Frequency Power Station (RFPS) - 400 kW 352 MHz Amplifiers - to the European Spallation Source ERIC (ESS ERIC) in an In-Kind (IK) collaboration frame. These RFPSs, 26 equivalent units plus 1 spare unit, will feed the Spoke cavity section of the proton Linac. The RFPS is a custom made machine. Its manufacturing has been awarded to European Science Solutions Srl...
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riichiro kobana (R&K Company Limited)
Operational and design aspects of solid state amplifiers, covering, but not limited to e.g. the bandwidth, linearity vs. efficiency, sensitivity to reflected power, paralleling and combination, heat extraction, life time vs. working point.
* place holder by D. Valuch *
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