Modern particle therapy systems incorporate incredibly advanced (and large!) technologies: from pencil beam scanning (PBS) to gantries, advanced imaging to superconducting magnets, all in the name of high quality – and cost effective – patient treatment. So what changes are needed for the next generation? In this talk I will give an overview of current and future trends in particle therapy...
Stand-alone cryocooler-based systems allow applications at facilities where no cryogenic equipment and expertise is available at large scale, or where a mobile system can be moved between beam lines based on different application. The main technical challenge of this technology is to minimize the heat losses to the liquid helium so that commercial self-contained cryocoolers are able to handle...
High Energy Photon Source (HEPS) is a high-performance and high-energy synchrotron radiation light source with a beam energy of 6GeV and an ultra-low emittance of better than 0.06nm×rad. The HEPS is mainly composed of accelerator, beamlines and end-stations. The HEPS would provide the synchrotron beam with will brilliance higher than 1×1022 phs/s/mm2/mrad2/0.1%BW. And the hard X-ray with photo...
Irradiation accelerator use high power electron beam in the application of processing of food, medical product, quarantine treatments. Different types of RF linacs are developed in China at the electron beam energy of 10MeV and the beam power of 24kW. This presentation will focus on the basic theory of electron linacs and the improved design to obtain a high-power beam. The experiment results...
Laser wakefield acceleration (LWFA) driven by few-TW laser pulses in a thin, dense nitrogen gas target represents a favorable approach for stably generating 10-MeV-scale electron beams with satisfactory beam properties. With a high plasma density > 10$^{19}$ cm$^{-3}$, the self-focusing effect and the self-modulation instability developed on the pump pulse consequently cause a strong laser...
We present a self-consistent model of plasma wakefields in the strongly nonlinear ("bubble" or "blowout") regime based on the energy conservation law [1]. In this regime, a spherical plasma cavity (a bubble) devoid of plasma electrons is driven by a short intense laser pulse or a high-current electron bunch. The strong longitudinal fields of the bubble (which propagates with almost the speed...
Platform of Advanced Photon Source Technology R&D (PAPS) in the Institute of High Energy Physics (IHEP) is a finished project, which can provide a comprehensive research and testing platform for the particle accelerator, X-ray detection and optics. As one of the important parts of the platform, 2K superfluid helium cryogenic test system for the superconducting cavities is composed of three...
Vacuum insulated tandem accelerator (VITA) – original electrostatic accelerator – was proposed, created and is used for investigations in boron neutron capture therapy (BNCT) and in many other applications. VITA is the part of accelerator based (AB) neutron source in which protons/deutrons with an energy in range from 0.3 to 2.3 MeV and current in range from 1 nA to 10 mA are transported to a...
Electron–photon scattering is one of the most fundamental mechanisms in electrodynamics, underlying laboratory and astrophysical sources of high-energy X-rays. After a century of studies, it is only recently that sufficiently high electromagnetic field strengths have been available to experimentally study the nonlinear regime of the scattering in the laboratory. This can act as a new...
High energy proton colliders towards 100 TeV are proposed these years to study the physics beyond the Standard Model. The colliders call for 16-24 Tesla (T) accelerator magnets to bend and focus the particle beams. IHEP-CAS has been engaged in developing high field magnet technology with Nb3Sn and HTS materials from 2014: several model dipoles have been developed with combined common coil...
Ultra-high-dose-rate (UHDR) radiation is considered to trigger the so-called flash effect which spares the normal tisse while retains the therapeutic effect on tumor. X-ray is the least explored modality compared to electron or proton. The main challenge is to have electron accelerator achieving both high power and fast response. We introduce a compact radiator using a 10-MeV, backward...
A 70 MeV H- cyclotron system was commissioned in the Institute for Basic Science (IBS) using 40 - 70 MeV beams, and isotope separator on-line (ISOL) system is recently tested at a beam current of 1 µA. The beam commissioning was carried out primarily in the aspects of forming specified beam shapes at the entrance of ISOL target in cave A and testing a high-power beam of 50 kW at 70 MeV for six...
Various superconducting magnets are being developed and manufactured in Budker Institute of Nuclear Physics, Novosibirsk.
Major works are focused on insertions devices for the currently built SKIF – new source of synchrotron radiation research. This project demands at least 10 insertion devices including superconducting wigglers and undulators having high magnet and cryogenics parameters....
Purpose:
In radiation therapy, x-ray dose must be precisely sculpted to the tumor, while simultaneously avoiding surrounding organs at risk. This requires modulation of x-ray intensity in space and/or time. Typically, this is achieved using a multi leaf collimator (MLC) — a complex mechatronic device comprising over one hundred individually powered tungsten ‘leaves’ that move in or out of...
The University of Melbourne X-band Laboratory for Accelerators and Beams (X-LAB), now actively being commissioned, is to be operating X-band accelerator research laboratory in the southern hemisphere.
In order to leverage the full capability of the X-BOX test stands from CERN, the X-LAB is designing a compact beamline to be built on site based around the use of high gradient X-band...
The ultra-large cryogenic refrigeration system refers to the refrigeration system from liquid hydrogen with equivalent refrigeration capacity greater than or equal to 10000 watts at the liquid helium temperature to the superfluid helium temperature zone. It is an indispensable key system in the fields of helium resource development, aerospace engineering, nuclear energy utilization, hydrogen...
For 35 years, the Centre for Accelerator Science (CAS) of the Australian Nuclear Science and Technology Organisation (ANSTO) is a national state-of-art facility for applied accelerator science, providing world-leading accelerator mass spectrometry (AMS) and ion beam analysis (IBA). Two accelerators 10 MV Van de Graaff ANTARES and 6 MV Pelletron tandem SIRIUS are equipped with 5 sources to...
Our study shows that a single electron or a train of single electrons from a dielectric laser accelerator is able to excite laser-like radiation from a nano-photonic chip.
Two major in-house cryogenic techniques have been applied to the cryogenic in-vacuum undulator and helium gas purification module. The cryogenic in-vacuum undulator is used to generate high-brilliance X-rays at high photon energies and its liquid nitrogen cooling system maintains the magnet temperature at 170K. The purifier module improves the quality of the helium gas by using cold trap...
For the next generation of the particle accelerators, including laser wakefield acceleration (LWFA), application of plasma based focusing of electron beams is an area of active research. This approach will pave a path for the miniaturization of the beam transportation line in particle accelerators. In the context of LWFA scheme, this approach will open the opportunity to realize an extremely...
NSRRC in Taiwan houses two light sources: Taiwan Light Source (TLS) and Taiwan Photon Source (TPS). TLS has an electron energy of 1.5 GeV and a beam current of 360 mA, while TPS has an electron energy of 3.0 GeV and a beam current of 500 mA. Both light sources use SRF modules as their accelerating cavities. These SRF modules have been in operation for approximately 18 and 7 years for TLS and...
The Belle II experiment is an international collaboration of 1000 Physicists which employs the SuperKEKB e+e- collider at the KEK, Laboratory in Tsukuba, Japan. The experiment employs a distributed computing solution to supply the storage and processing power needed to analyse the data acquired by the Belle II detector. This presentation will describe the current status of the Belle II...
ILU type industrial accelerators are RF pulse accelerators with energy range from 0.8 to 10 MeV. First of these accelerators where designed 1970’s. But market development requires continuous modernization of accelerators. Great prospects for the use of accelerators in industry are provided by a new market - food irradiation. The report describes accelerator upgrades associated with food...
At present, low-energy sources (up to 30 keV) and accelerators (up to 200 keV) of electrons find wide practical and scientific use and have a wide range of parameters of the generated electron beam, which is determined by the problem being solved. Thus, electron sources can also be used for processing various organic materials (polymers, gases, food or medical products, etc.), generating beams...
Academia Sinica Grid Computing Centre (ASGC) has become the core facility for big data analysis and scientific computing in Academia Sinica from 2023. Based on WLCG experiences for the past two decades, ASGC is supporting advanced scientific computing of broader disciplines by distributed cloud infrastructure. In this presentation, the development and strategy of science cloud based on WLCG...
KEK-iCASA has develoed the SRF technology for the accelerators. High gradient SRF accelerator, such as ILC, is one of target. High-Q/high-gradient R&D has performed to improve SRF cavity performance. Beam operation of STF-2 accelerator achieved the ILC specification. Another target is efficient operation of CW SRF accelerator. cERL operation has carried out to realized high current CW...
The Australian Synchrotron is a division within ANSTO and one of Australia’s premier research facilities. It produces powerful beams of light that are used to conduct research in many important areas including health and medical, food, environment, biotechnology, nanotechnology, energy, mining, agriculture, advanced materials and cultural heritage.
After 15 years of uninterrupted operation...
Access to Radiotherapy Linear Accelerators (LINACs) remains a significant challenge in Low and Middle-Income Countries (LMICs) for effective cancer treatment. The complexity of LINACs is further compounded in LMICs by environmental, socio-economic, and geographical factors, resulting in frequent breakdowns, with downtimes lasting from days to months. Recent studies have identified the...
The KEK Central Computer System (KEKCC) provides large-scale computer resources, including Grid computing systems, and essential IT services, such as e-mail and web services to support many research activities in KEK. The current status of KEKCC and Grid systems will be reported in this presentation.
A compact accelerator-driven neutron generator with a lithium beam driver can generate neutrons in a forward direction, even using incident beam energy at a near-threshold energy. Especially for BNCT applications, the ability to suppress unwanted radiation to patients is a major advantage. However, it is difficult to supply a high-intensity lithium-ion beam, and its practical application has...
The High Energy Physics experiments and facilities in China are producing or will produce huge data, all this data should be stored, processed and shared properly. This talk will give an introduction about the networking and computing status for HEP experiments at IHEP.
The grid storage at Melbourne has been provided by a Disk Pool Manager (DPM) storage system which is now reaching the end of software support this year, as well as the end of the disk lifetimes. Additionally the IBM Jet cluster that provided compute for ATLAS at Melbourne has also had to be turned off due to hardware failures.
Continuing to provide grid storage and compute for the ATLAS and...
Indus 1 and Indus-2 are India's only two synchrotron radiation sources, designed and developed in India. Both these machines were designed in the early 1990s, with Indus-1 being operational since 1999 and Indus-2 was operational since 2005. Indus-2 is a 2.5 GeV, 200 mA machine, and Indus-1 is a 450 MeV, 125 mA machine. Currently, Indus-2 has 18 operational beamlines, out of which 16 are for...
A laser-plasma acceleration, as an innovative technology for a compact accelerator, has been developed for tumor therapy, compact light sources, an injector of a high-energy accelerator, and so on. To overcome the limitations on generating stable, high-quality beams, it is better to perform the simulations with new ideas based on expected mechanism. The accelerating mechanism and/or...
As the second phase of the CSNS, CSNS-II will achieve a beam power on the target of 500 kW. The injection energy of CSNS-II will be increased from 80 MeV to 300 MeV and the injection beam power will be increased about 20 times. Therefore, the injection system needs to be comprehensively upgraded and the injection scheme needs to be redesigned. Based on the experience of the CSNS and simulation...
Dark matter, a new non-luminous matter which is induced from the astronomical observation, play a leading role in the universe component. PandaX dark matter direct detection experiment established from 2009 have been operated for three phases with 120~kg to 4~ton target liquid xenon. The PandaX-4T experiment, located at China JinPing Underground laboratory II, started the data taking from 2020...
The Tokyo Regional Analysis Center, located at the International Center for Elementary Particle Physics (ICEPP) at the University of Tokyo, has provided computing resources to the ATLAS experiment in the Worldwide LHC Computing Grid as a Tier-2 site. We report on our current status and activities, such as the hardware replacement in January 2021.
Variable Energy Cyclotron Centre (VECC) is a R&D unit of the Department of Atomic Energy, Government of India. This Centre is dedicated to carry out frontier research and development in the fields of Accelerator Science & Technology, Nuclear Science (Theoretical and Experimental), Material Science, Computer Science & Technology and in other relevant areas.
VECC has been delivering proton,...
At the VEPP-4M collider with the KEDR detector, precision measurements of the masses and lepton widths of the Y(1S) meson are planned. In this experiment, beam energy calibration will be carried out by the method of resonant depolarization using a laser polarimeter. The essence of the method is to determine the frequency of the resonant depolarization of the beam, which is related to its...
TBC
Recent studies showed that ultra-high dose rate radiotherapy (FLASH radiotherapy) can selectively kill tumor tissues and protect normal tissues in vivo more significantly, which make possible to mitigate dramatically adverse reactions to aggressive radiation therapies even with limited geometrical conformity, and/or to extend the prescribed dose to unprecedented tumor control. However,...
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Recently, the ATOMKI group found evidence for a new fundamental boson, named the X17, observed via p+7Li→8Be +(X17→(e+e−)), p+3H→4He +(X17→( e+e−) and )) and p+311B4 +(X17→( e+e−)) reactions with a mass of 17 MeV and significance ≈ 7σ. There are now numerous projects to search for weakly coupled bosons, including the X17, using particle physics experiments . However, only the ATOMKI...
We established electro-optic (EO) sampling techniques adequate for the diagnostics of electron temporal information in laser wakefield acceleration (LWFA). For the investigation of electron timing jitter and injection process, EO spatial decoding on the electron Coulomb field was performed. The spherical wavefront of the Coulomb field and plasma-density-dependent electron emission timing were...
TBC
The quasistatic approximation (QSA) is an efficient method of simulating laser- and beam-driven plasma wakefield acceleration, but it becomes imprecise if some plasma particles make long longitudinal excursions in a strongly nonlinear wave, or if waves with non-zero group velocity are present in the plasma, or the plasma density gradients are sharp, or the beam shape changes rapidly. We...
.Synchrotron radiation (SR) is a unique high-brightness and fully polarized light source.
However, typical insertion devices supply only linearly polarized radiation, precluding
studies of chiral dynamics and spin structures. To fulfill a strong demand for circularly
polarized radiation, an elliptically polarized undulator (EPU) provides the greatest
merit flux and thus has become the...
We have developed and successfully tested a low-pressure Time Projection Chamber (TPC) with Gas Electron Multiplier (GEM) readout for Accelerator Mass Spectrometry (AMS).
At AMS in Novosibirsk, there is a problem to separate isobar ions of different chemical elements that have the same atomic mass. The typical example is radioactive isotopes 10Be and 10B that are used to date geological...
The COMET experiment searches for a muon to an electron transition without neutrinos, whose branching fraction is significantly enhanced in many plausible new physics beyond the standard model. The experiment will be performed under an extremely high particle rate environment, hence, the pile-up separation is essential to suppress the background particles while keeping high acceptance for...
Fast neutron irradiation gives a higher LET than gamma radiation, making it a very effective approach for mutagenesis and is widely used to create mutants in many plant species. Neutron irradiation is mainly performed using nuclear reactors and, more recently, accelerators, but both are limited to large facilities, and general access to their use is a bottleneck. In this talk, we report the...
A compact THz-FEL facility, named as Delhi Light Source (DLS), is being commissioned at Inter University Accelerator Centre (IUAC), New Delhi. The facility consists of RF photocathode electron gun, high power RF system, the nano-second solid state laser system to be replaced soon by the femto-second (fs) Fibre laser system, the Undulator magnet, the Photocathode deposition systems, various...
CSNS was designed with an average power of 100 kW, which was achieved in February 2020 and 125 kW in March 2022. On this basis, CSNS plans to increase the average beam power to 200 kW, which is to double the current strength of the circulating beam of RCS, with the injection energy unchanged. The main means is to add a second harmonic RF cavity to the RCS.
The space charge effect is an...
The 4th generation synchrotron light source is under construction in Budker Institute of Nuclear Physics. The first stage of the linear accelerator is under tests now. The aim of the experiments is to obtain a beam with emittance, charge and energy spread corresponding to the demands of injection into the booster of storage ring. Only one of five accelerating structures is applied in these...
The T2K experiment searches for CP violation of neutrinos.
Since off-axis beams are used to reduce the energy spread of the beam, beam direction measurement is very desirable.
The T2K beam is monitored by measuring the muon decayed from pion.
In the future, we plan to increase the beam power in order to increase the statistics.
Then, there is a need for sensors with better radiation resistance...
The Korea-4GSR project is a green-field project which was launched to build a diffraction-limited light source. The accelerator is aimed to achieve an emittance of less than 100 pm-rad with a kinetic energy of 4 GeV and a circumference of 800 m. Various beam diagnostics with a few micrometer spatial and picoseconds temporal resolutions are necessary to verify the beam quality. It contains a...
RRCAT is developing pulsed proton accelerators for various applications. Several types of ion sources, LEBT, Beam dump etc have been developed. A 3MeV RFQ at 325 MHz is under development. The subsystems for integration with RFQ are also under development. These will form a part of the front end test stand for testing the low energy part of a future high energy pulsed proton accelerator. RRCAT...
In India, DAE laboratories are now actively involved in research and development activities on Superconducting RF (SCRF) cavities and associated technologies for high current, high energy proton linear accelerators, which is essential for development of ADSS and Spallation Neutron Source by DAE and also for the FERMILAB PIP-II Project. These activities are being carried out under Indian...
The BINP SB RAS, in collaboration with Novosibirsk State University, has upgraded facility for boron-neutron capture therapy for the possibility of radiation tests on beam of fast neutrons with the integral flux up to 10^14 neq/cm2.
In 2022 the experiment on the study of the radiation aging of optical fibers for the laser calibration system of electromagnetic calorimeter CMS (CERN,...
Laser-plasma wakefield accelerators (LWFA) have been proposed as a potential solution for compact and high-energy free-electron lasers (FELs). However, the electron beam quality generated by LWFA may not meet the requirements for X-ray FELs. To overcome this challenge, one promising approach is to use an external seed beam from a radiofrequency (RF) photocathode with LWFA. Recently, the...
