Ming-Yang Huang

China Spallation Neutron Source

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Sheng Wang

Innovation Team (China)

Shouyan Xu

Institute of High Energy Physics

Yuwen An

Institute of High Energy Physics

Xiaohan Lu

Institute of High Energy Physics

Liangsheng Huang

Institute of High Energy Physics

Shou Xu

Zhejiang University

Jing Qiu

Sichuan Agricultural University

Shinian Fu

China Agricultural University

Mingtao Li

Institute of High Energy Physics

Jun Peng

Institute of High Energy Physics

Cooperative Institutions

Chinese Academy of Sciences

Institute of High Energy Physics

China Spallation Neutron Source

University of Chinese Academy of Sciences

University of Science and Technology of China

National Sun Yat-sen University

National Yang Ming Chiao Tung University

Chinese Academy of Medical Sciences & Peking Union Medical College

Shandong University

High Magnetic Field Laboratory

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Optimal Phase Arrangement of Distribution Feeders Using Immune Algorithm

Chia-Hung Lin C.S. Chen Ming-Yang Huang Hsun‐Jen Chuang Mingyu Kang

In this paper, the immune algorithm (IA) is proposed to derive the rephasing strategy arrangement of laterals and distribution transformers to enhance three phase balancing of distribution systems. The multi-objective function is formulated by considering the unbalance of phasing currents, the customer service interruption cost and labor cost to perform the optimal rephasing strategy. To demonstrate the effectiveness of the proposed methodology to enhance three-phase balancing of distribution systems, a practical distribution feeder in Taipower with 523 customers is selected for computer simulation. By minimizing the objective function subjected to the operation constraints, the rephasing strategy has been derived by selecting the laterals and distribution transformers for phasing adjustment. The phase currents and neutral currents of test feeder before and after the execution of proposed rephasing strategy have been measured and collected by the SCADA system in Taipower. It is found that the neutral current of test feeder has been reduced to be less than the over neutral current limit by executing the rephasing of laterals and distribution transformers.

Three-phase

Phaser

10.1109/isap.2007.4441596

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Citations (10)

Multi-objective optimization of hydrogen production system based on the combined supercritical cycle and gas turbine plant

Chemosphere (2023)

Zhixiong Li Xinrui Qi Ming-Yang Huang Zhenjun Ma Орест Кочан

Exergy efficiency

Compressed hydrogen

10.1016/j.chemosphere.2023.139344

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Citations (2)

Performance and painting scheme considerations for the CSNS injection

Journal of Instrumentation (2024)

Ming-Yang Huang Shouyan Xu Changdong Deng Sheng Wang

Abstract The accelerator complex of China Spallation Neutron Source (CSNS) consists of an 80 MeV H - Linac and a 1.6 GeV proton rapid cycling synchrotron (RCS). The beam injection is one of the most important issues for the CSNS accelerator complex. In this paper, the injection methods have been comprehensively studied, including phase space painting and H - stripping. By using the design scheme of the anti-correlated painting, the beam power has successfully reached 50 kW. However, some difficulties have been found in the higher power beam commissioning. In order to solve these key problems, flexibility in the CSNS design has been exploited to implement the correlated painting by using the rising current curve of the pulse power supply. The effectiveness of the new method has been verified in the simulation and beam commissioning. By using the new method, the beam power on the target has successfully risen to the design value. Secondly, according to the CSNS beam commissioning experience, based on the present design of the injection system, a new idea is proposed to perform both correlated and anti-correlated painting in the CSNS. By adopting an additional vertical shift bump generated by four additional alternating current (AC) magnets in the injection region, the local orbit can be manipulated to meet the requirement of correlated painting. The new method can not only perform the correlated painting, but also optimize the anti-correlated painting. The simulation study shows that the new method works well, and both correlated and anti-correlated painting methods are well performed.

10.1088/1748-0221/19/05/t05009

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An Expert System for Three-Phase Balancing of Distribution Feeders

IEEE Transactions on Power Systems (2008)

Chia‐Hung Lin Chao‐Shun Chen Hui-Jen Chuang Ming-Yang Huang Chia-Wen Huang

In this paper, an expert system is designed to derive the rephasing strategy of laterals and distribution transformers to enhance three-phase balancing of distribution systems. The heuristic rules adopted by distribution engineers are incorporated in the knowledge base of the expert system in the problem-solving process. The neutral current reduction algorithm is developed to support the inference engine to derive the rephasing strategy to reduce the neutral current of distribution feeder so that the tripping of over-current relay can be prevented and the customer service interruption cost and labor cost to execute the rephasing strategy can be justified by the power loss reduction obtained. To demonstrate the effectiveness of the proposed expert system to enhance three-phase balance, a practical distribution feeder in Taiwan Power Company (Taipower) is selected for computer simulation. By minimizing the objective function subjected to the rephasing rules, the rephasing strategy has been derived to identify the laterals and distribution transformers for phasing adjustment. After executing the proposed rephasing strategy by Taipower engineers, the phase currents and neutral current of test feeder has been collected by the SCADA system to verify the reduction of neutral current. The power loss reduction obtained by three-phase balancing has been solved by three-phase load flow analysis, which is then used to justify the customer service interruption cost and labor cost for rephasing of test feeder.

10.1109/tpwrs.2008.926472

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Citations (90)

Realistic Earth matter effects and a method to acquire information about smallθ13in the detection of supernova neutrinos

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (2009)

Xin-Heng Guo Ming-Yang Huang Bing-Lin Young

In this paper, we first calculate the realistic Earth matter effects in the detection of type II supernova neutrinos at the Daya Bay reactor neutrino experiment which is currently under construction. It is found that the Earth matter effects depend on the neutrino incident angle $\ensuremath{\theta}$, the neutrino mass hierarchy $\ensuremath{\Delta}{m}_{31}^{2}$, the crossing probability at the high resonance region inside the supernova, ${P}_{H}$, the neutrino temperature, ${T}_{\ensuremath{\alpha}}$, and the pinching parameter in the neutrino spectrum, ${\ensuremath{\eta}}_{\ensuremath{\alpha}}$. We also take into account the collective effects due to neutrino-neutrino interactions inside the supernova. With the expression for the dependence of ${P}_{H}$ on the neutrino mixing-angle ${\ensuremath{\theta}}_{13}$, we obtain the relations between ${\ensuremath{\theta}}_{13}$ and the event numbers for various reaction channels of supernova neutrinos. Using these relations, we propose a possible method to acquire information about ${\ensuremath{\theta}}_{13}$ smaller than 1.5\ifmmode^\circ\else\textdegree\fi{}. Such a sensitivity cannot be achieved by the reactor neutrino deta at the Daya Bay experiment which has a sensitivity of the order of ${\ensuremath{\theta}}_{13}\ensuremath{\sim}3\ifmmode^\circ\else\textdegree\fi{}$. Furthermore, we apply this method to other neutrino experiments, i.e. Super-K, SNO, KamLAND, LVD, MinBooNE, Borexino, and Double-Chooz. We also study the energy spectra of the differential event numbers, $dN/dE$.

Borexino

10.1103/physrevd.79.113007

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OPTIMIZATION OF THE COLLIMATION SYSTEM FOR THE CSNS/RCS

N.Wang Ming-Yang Huang S.Wang Sheng Xu

Beam loss induced activation of the accelerator components is one of the primary concerns in designing a high intensity machine. The uncontrolled beam loss is required to be less than 1 W/m for hands-on maintenance of the machine. A two stage collimation system is designed in the Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS) to localize the beam losses in a restricted area. The parameters of the collimator are optimized in order to obtain high collimation efficiency. The final design of the collimation system is presented. The reliability of the collimation system is estimated for different working points and with closed orbit errors.

Collimated light

Collimator

Spallation Neutron Source

Source

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Citations (2)

Preliminary Study on the Injection System Upgrade for CSNS-II

Sheng Wang Ming-Yang Huang Shou Xu

Upgrade

10.18429/jacow-ipac2019-tupts048

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Citations (1)

O2-generating multifunctional polymeric micelles for highly efficient and selective photodynamic-photothermal therapy in melanoma

Chinese Chemical Letters (2023)

Yu Qin Ming-Yang Huang Chenlu Huang Hannah L. Perry Linhua Zhang

Indocyanine Green

Internalization

10.1016/j.cclet.2023.109171

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Citations (8)

Solvement of the Asynchronization Between the BPMs and Corrector Power Supplies During Orbit Correction in RCS of CSNS

9th Int. Particle Accelerator Conf. (IPAC'18), Vancouver, BC, Canada, 29 April-04 May 2018 (2018)

Mingtao Li Yuwen An Ming-Yang Huang

Orbit (dynamics)

10.18429/jacow-ipac2018-tupal001

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Design and beam dynamics validation of a spiral FFAG accelerator for CSNS-II

Journal of Instrumentation (2024)

Bin Wu Kai Zhou Shouyan Xu Changdong Den Ming-Yang Huang

Abstract The fixed-field alternating gradient (FFAG) accelerator, with its compact structure and the combined advantages of high energy from synchrotrons and high beam intensity from cyclotrons, offers unparalleled benefits in accelerating protons, heavy ions, and short-lived particles such as muons and unstable nuclei. The China Spallation Neutron Source plans to establish an FFAG accelerator with a diameter of 20 meters at the end of the negative hydrogen linac for various purposes, including experiments in nuclear physics and medical applications. For this design, a scaling scheme using spiral magnets as the basic focusing structure is investigated to provide the proton beam with kinetic energy ranging from 300 MeV to 600 MeV. We present the design results for the scaling FFAG accelerator and discuss the optimization of the cell tune. A detailed beam dynamics verification and discussion of the proposed FFAG accelerator lattice are presented using the ray-tracing code Zgoubi, including off-axis optical characteristics, large amplitude transverse motion, and full-cycle longitudinal acceleration. The FFAG accelerator is demonstrated to provide a large transverse and longitudinal acceptance for the tracking beam in the designed lattice. A new simulation code based on Python for the study of FFAG accelerator beam dynamics has been developed, and the corresponding verification results are also presented.

Dynamics

10.1088/1748-0221/19/06/t06011

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