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...
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...
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...
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...
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...
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...
High-resolution high-energy X-ray computed tomography is one of the most effective methods for inspection of high-density samples with fine structures. Theoretically, minimizing the effective focal spot size of the X-ray source can significantly improve spatial resolution of X-ray CT. In the paper, we report our progress on high-resolution high-energy X-ray CT driven by a bright photoinjector,...
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...
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...
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...
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...
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...
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...
Belle II is a precision measurement experiment that aims to explore new physics by precisely measuring the decays of particles such as B, D and $\tau$. The Central Drift Chamber (CDC), one of the detectors, measures the trajectory and determines the momentum of charged particles using its front-end readout module. The detector system has led to many physics results recently, but also revealed...
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...
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,...
Neutron science and technology plays an irreplaceable role in national defense and industry. China spallation neutron source (CSNS) is a major science and technology platform for multidisciplinary applications. As one of the most expensive core equipment of neutron instruments, the neutron detector plays a very important role in the construction and operation of neutron instruments at CSNS....
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...
The Micro-Channel Plate (MCP) is a specially crafted microporous plate with millions of independent channels, which have secondary electron emission capability. The MCP could be used as the electronic multiplier amplifier in the PMTs. There are two types of MCP Photomultiplier tube (MCP-PMT), large-area electrostatic focusing PMTs (LPMT) and small size proximity focusing PMTs (FPMT)...
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...
The Circular Electron Positron Collider (CEPC) and Future Electron Position Circular Collider (FCCee) were been proposed as a Higgs and high luminosity Z factory in last few years. The detector conceptual design of a updated detector consists of a tracking system, which is a high precision (about 100μm) spatial resolution Time Projection Chamber (TPC) detector as the main track device in very...
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 GEM detector is useful for various fields, not only high energy physics. One uncomfortable feature is to be broken due to a large discharge. One large charge deposit makes a trigger to lead the large discharge and to carbonize inside the GEM hole. We are developing new GEM foil without carbon to avoid such a bad situation. One good solution is to apply ceramic as an insulator. New ceramic...
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,...
