China Science & Technology Forum

[JSCh]

China shows excellent performance in 30 research fronts: report
Source: Xinhua 2016-11-01 01:52:21

BEIJING, Oct. 31 (Xinhua) -- China ranks second place, after the United States, for the number of research areas that demonstrate excellent research performance, according to a report released Monday.

China has shown excellent performance in 30 out of 180 emerging areas in the sciences and social sciences, covering eight fields, including chemistry, material sciences, physics and biology, the "Research Fronts 2016" report said.

The report, jointly released by the Chinese Academy of Sciences and Clarivate Analytics, identified prominent areas of scientific research based on an analysis of scientific literature citations.

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CAS and Clarivate Analytics Collaborate on Report Identifying Hottest, Emerging Fields in Scientific Research
Oct 31, 2016

Hottest fields include Detection of Dark Matter, Advances in Crop Science and Food Science, Global Warming Hiatus and Impact of Biodiversity Loss on the Ecosystem. Hottest emerging fields include Elemental composition of the North Atlantic Ocean and Southern Ocean, and Energy Management Strategies of Hybrid Electric Bus.

October 31, 2016 – Chinese Academy of Sciences and Clarivate Analytics today released “Research Fronts 2016”, an annual report identifying prominent areas of scientific research over the past year. This is the third collaborative report from these two organizations.

The joint paper identifies 180 key research fronts including 100 hot and 80 emerging fronts, based on a comprehensive analysis of scientific literature citations. The analysis generated 12,188 research fronts in the Essential Science Indicators (ESI) database from 2009 until 2015. Research fronts are specialties discovered when scientists cite one another’s work, reflecting a specific commonality in the research, which can be experimental data, a concept or hypothesis or even a method.

Working in collaboration with the Chinese Academy of Sciences, Clarivate bibliometric experts utilized the ESI database, a web-based research analytics platform and a unique compilation of science performance metrics and trend data based on scholarly paper publication counts and citation data from the Web of ScienceTM. Once identified, the research fronts built on recently published “core” or foundational journal articles.

The 2016 report also features an analysis of the current and potential performance of six leading countries in the 180 research fronts -- USA, China, the UK, Germany, France and Japan. Analysts at the the Institutes of Science and Development and the National Science Library of the Chinese Academy of Sciences also analyzed the 180 research fronts provided by Clarivate in great depth and interpreted it to highlight 28 research fronts of particular interest.

"We are honored and pleased to once again collaborate with CAS to produce this year’s Research Fronts report with expanded content,” said Linda Guo, managing director of China, Clarivate Analytics. “The combined strength of trusted data and analysis capabilities from Clarivate, with the Chinese Academy’s deep expertise in scientific research not only increases the depth of the report, but also provides a solid foundation to help researchers, funding agencies, administrators, policy makers and other key stakeholders make better decisions by identifying research trends and new areas of study. The analysis of research fronts at a national level can provide insights about a country’ current and potential leading performance.”

The president of the Chinese Academy of Sciences, Dr Bai Chunli said, “To produce this joint Research Fronts 2016 report with Clarivate Analytics, we undertook extensive thesis data analysis to provide a meaningful analysis and interpretation of the global research & technology landscape and competitive structure, and in the process, we enhanced the method of combining thesis analysis with expert opinion and showcased China’s expertise in evaluating cutting-edge research fields. This collaborative project also underscores the importance of the Chinese Academy of Sciences’ role as China’s foremost think tank on global science & technology issues and trends and pioneer supporter of China’s S&T development.”

Ten noteworthy topics among the hottest research fronts are:

Eight noteworthy topics among the emerging research fronts are:

CAS and Clarivate Analytics Collaborate on Report Identifying Hottest, Emerging Fields in Scientific Research---Chinese Academy of Sciences

 

[JSCh]

NIST Collaboration Heats Up Exotic Topological Insulators
October 31, 2016

Fashion is changing in the avant-garde world of next-generation computer component materials. Traditional semiconductors like silicon are releasing their last new lines. Exotic materials called topological insulators (TIs) are on their way in. And when it comes to cool, nitrogen is the new helium.

This was clearly on display in a novel experiment at the National Institute of Standards and Technology (NIST) that was performed by a multi-institutional collaboration including UCLA, NIST and the Beijing Institute of Technology in China.

This topological insulator, doped with chromium (Cr) atoms, conducts electricity on its surface and possesses desirable magnetic properties at a higher range of temperatures than before when sandwiched between magnetic materials known as ferromagnets.

Credit:
Natasha Hanacek/NIST
Topological insulators are a new class of materials that were discovered less than a decade ago after earlier theoretical work, recognized in the 2016 Nobel Prize in physics, predicted they could exist. The materials are electrical insulators on the inside and they conduct electricity on the outer surface. They are exciting to computer designers because electric current travels along them without shedding heat, meaning components made from them could reduce the high heat production that plagues modern computers. They also might be harnessed one day in quantum computers, which would exploit less familiar properties of electrons, such as their spin, to make calculations in entirely new ways. When TIs conduct electricity, all of the electrons flowing in one direction have the same spin, a useful property that quantum computer designers could harness.

The special properties that make TIs so exciting for technologists are usually observed only at very low temperature, typically requiring liquid helium to cool the materials. Not only does this demand for extreme cold make TIs unlikely to find use in electronics until this problem is overcome, but it also makes it difficult to study them in the first place.

Furthermore, making TIs magnetic is key to developing exciting new computing devices with them. But even getting them to the point where they can be magnetized is a laborious process. Two ways to do this have been to infuse, or “dope,” the TI with a small amount of magnetic metal and/or to stack thin layers of TI between alternating layers of a magnetic material known as a ferromagnet. However, increasing the doping to push the temperature higher disrupts the TI properties, while the alternate layers’ more powerful magnetism can overwhelm the TIs, making them hard to study.

To get around these problems, UCLA scientists tried a different substance for the alternating layers: an antiferromagnet. Unlike the permanent magnets on your fridge, whose atoms all have north poles that point in the same direction, the multilayered antiferromagnetic (AFM) materials had north poles pointing one way in one layer, and the opposite way in the next layer. Because these layers’ magnetism cancels each other out, the overall AFM doesn’t have net magnetism—but a single layer of its molecules does. It was the outermost layer of the AFM that the UCLA team hoped to exploit.

Fortunately, they found that the outermost layer’s influence magnetizes the TI, but without the overwhelming force that the previously used magnetic materials would bring. And they found that the new approach allowed the TIs to become magnetic and demonstrate all of the TI’s appealing hallmarks at temperatures far above 77 Kelvin—still too cold for use as consumer electronics components, but warm enough that scientists can use nitrogen to cool them instead.

“It makes them far easier to study,” said Alex Grutter of the NIST Center for Neutron Research, which partnered with the UCLA scientists to clarify the interactions between the overall material’s layers as well as its spin structure. “Not only can we explore TIs’ properties more easily, but we’re excited because to a physicist, finding one way to increase the operational temperature this dramatically suggests there might be other accessible ways to increase it again. Suddenly, room temperature TIs don’t look as far out of reach.”

Paper: Q.L. He, X. Kou, A.J. Grutter, G. Yin, L. Pan, X. Che, Y. Liu, T. Nie, B. Zhang, S.M. Disseler, B.J. Kirby, W. Ratcliff II, Q. Shao, K. Murata, X. Zhu, G. Yu, Y. Fan, M. Montazeri, X. Han, J.A. Borchers and K.L. Wang. Tailoring Exchange Couplings in Magnetic Topological Insulator/Antiferromagnet Heterostructures. Nature Materials, October 31, 2016. DOI: 10.1038/nmat4783



NIST Collaboration Heats Up Exotic Topological Insulators | NIST

 

[TaiShang]

Innovation takes the spotlight
Shanghai Daily, November 1, 2016

Exhibitors prepare a robot with two seven-joint arms yesterday for the 2016 China International Industry Fair, which opens in Shanghai today. [Photo/Shanghai Daily]

Innovative products including a robot with two seven-joint arms and a high-temperature superconducting maglev pen will be among innovative products that visitors can marvel at the 2016 China International Industry Fair, which opens in Shanghai today.

The robot, developed by Shanghai Gene Automation Technology Co, imitates a man's movements and its two arms can work collaboratively. Each arm has seven joints — one joint more than common robots — allowing it to handle precise and complicated work like chip and digital device assembling.

"It imitates a human's working method and uplifts efficiency for labor-intensive industry," Ju Zheng, an engineer at the developer, told Shanghai Daily. "The added joint raises the robot's flexibility and its multi-task skills."

Ju said the robot is undergoing laboratory tests and is set to enter the market next year.

Shanghai Superconductor Technology Co hopes to impress visitors with its levitating pen that can write down sentences read out by visitors on a vertical board.

The firm applies an onboard high-temperature superconducting maglev technology to the pen, which operates on voice and movement recognition, said Hong Yiming, its marketing director.

"You just speak out or write down a sentence, either in Chinese or English, and the pen will immediately write what you said or wrote onto the vertical board," said Hong.

A "purely original innovation," the levitating pen, weighing between 100 and 200 grams, may also imitate a person's handwriting.

The company is also introducing an HTS wireless power transfer system so that electric devices like cell phones can be charged without using wires.

Over 2,300 exhibitors are taking part in the annual five-day fair at the National Exhibition and Convention Center. More than 130,000 trade visitors are expected to attend.

 

[JSCh]

WIPO expects China to become second biggest international patent applicant in two year
Source: Xinhua 2016-11-01 04:42:49

GENEVA, Oct. 31 (Xinhua) -- Director General of the World Intellectual Property Organization (WIPO) Francis Gurry said on Monday he expected China to become the world's second biggest international patent applicant in two years.

"China is arising into intellectual property and technological power; 14 percent of all international patent applications last year were from China. We expect this year to go about 17 or 18 percent, or even higher," Francis Gurry told the press as the UN agency unveiled a new neural machine translation tool on Monday to translate Chinese patent documents into English.

He said China ranked third in terms of the number of international patent applications filed in 2015. "We might expect it to achieve number two within the next two years," Gurry noted.

WIPO initially "trained" the new technology to translate Chinese, Japanese and Korean patent documents into English. Patent applications in those languages accounted for some 55 percent of worldwide filings in 2014.

The high level of accuracy of the Chinese-English translation is the result of the training of the neural machine translation tool, which compared 60 million sentences from Chinese patent documents provided to WIPO's PATENTSCOPE database by the State Intellectual Property Office of China with their translations as filed at the United States Patent and Trademark Office.

The neural machine translation can produce more natural word order, with particular improvements seen in so-called distant language pairs, like Chinese-English. WIPO said users can already try out the Chinese-English translation facility on the public beta test platform.

WIPO plans to extend the neural machine translation service to French-language patent applications, with other languages to follow.

 

[Banglar Bir]

China says it has stealth-defeating quantum radar
Published time: 8 Sep, 2016 13:05

Get short URL


© Cherie A. Thurlby / Reuters

A Chinese firm has reportedly developed and tested a radar system that uses quantum entanglement to beat the stealth technology of modern military craft, state media said.

Read more

China receives first data from unique ‘hack-proof’ quantum satellite

The first Chinese quantum radar was developed by the Intelligent Perception Technology Laboratory of the 14th Institute in CETC, according to Xinhua news agency. CETC stands for Electronics Technology Group Corporation, a defense and electronics firm.

The radar was tested in mid-August, Xinhua said in a Thursday report.

The system was able to detect a target at a range of 100 kilometers in a real-world environment, the report said. The device employs single photon detection technology.

Quantum radar is a device that uses quantum entanglement photons to provide better detection capabilities than conventional radar systems. The method would be useful for tracking targets with a low radar cross section, such as modern aircraft using stealth technology or targets employing active countermeasures to jam or baffle enemy radar.

The technology may also find use in biomedicine, since quantum radar requires lower energy and can be used to non-invasively probe for objects with low reflectivity, such as cancer cells.

Earlier, China launched the world’s first quantum communications satellite, which uses quantum entanglement for cryptography

 

[JSCh]

Physicists just found more hints of an elusive particle that's its own antiparticle
Matter and antimatter, simultaneously.

BEC CREW
26 OCT 2016

Almost 80 years ago, an Italian physicist proposed that a particle could exist as both matter and antimatter at the same time. Called the Majorana fermion, this mysterious state of matter set off a decades-long hunt, with scientists finding the first real evidence of its existence earlier this year.

And now physicists in China have discovered that an elusive type of quasiparticle can behave just like a Majorana fermion, and it could help us to finally understand this incredibly weird phenomenon.


-> Physicists just found more hints of an elusive particle that's its own antiparticle - ScienceAlert

 

[JSCh]

Synopsis: Quantum Cryptography Goes a Long Way
November 2, 2016
A protocol for secure quantum communications has been demonstrated over a record-breaking distance of 404 km.

Y. Hua-Lei et al., Phys. Rev. Lett. (2016)​

Encryption is critical in many aspects of modern life, such as the millions of credit card transactions that occur every day. However, perfectly secure communication can only be achieved using the strong correlations, or entanglement, between quantum objects. Now, Jian-Wei Pan at the University of Science and Technology of China and his colleagues have experimentally shown that a secure quantum protocol known as measurement-device-independent quantum key distribution (MDIQKD) can be implemented over a distance of 404 km. The result breaks the previous MDIQKD record by over a factor of 2 and paves the way for secure quantum communications between distant cities.

MDIQKD—a protocol proposed in 2012—functions even when it uses photon detectors that are not ideal and have, for example, low detection efficiencies. It can also overcome security loopholes of quantum communication schemes by sending out decoy pulses of light to detect eavesdropping attacks. Pan and his team sent pulses of infrared photons through optical fibers with lengths between 102 and 404 km and optimized the MDIQKD scheme by tuning several parameters, such as the average number of photons per pulse. The protocol was found to be secure up to the longest distance. For each length, the researchers also determined the maximum speed by which cryptographic keys could be securely distributed. Compared with earlier experiments, they demonstrated a 500-fold increase in speed, reaching a key-distribution rate that would be sufficient to ensure encrypted voice transmission by telephone.

This research is published in Physical Review Letters.

–Katherine Kornei
Katherine Kornei is a freelance writer based in Portland, Oregon



Physics - Synopsis: Quantum Cryptography Goes a Long Way

Paper: Hua-Lei Yin, Teng-Yun Chen, Zong-Wen Yu, Hui Liu, Li-Xing You, Yi-Heng Zhou, Si-Jing Chen, Yingqiu Mao, Ming-Qi Huang, Wei-Jun Zhang, Hao Chen, Ming Jun Li, Daniel Nolan, Fei Zhou, Xiao Jiang, Zhen Wang, Qiang Zhang, Xiang-Bin Wang, and Jian-Wei Pan. "Measurement-Device-Independent Quantum Key Distribution Over a 404 km Optical Fiber". Phys. Rev. Lett. (2016).DOI: 10.1103/PhysRevLett.117.190501

Abstract

Measurement-device-independent quantum key distribution (MDIQKD) with the decoy-state method negates security threats of both the imperfect single-photon source and detection losses. Lengthening the distance and improving the key rate of quantum key distribution (QKD) are vital issues in practical applications of QKD. Herein, we report the results of MDIQKD over 404 km of ultralow-loss optical fiber and 311 km of a standard optical fiber while employing an optimized four-intensity decoy-state method. This record-breaking implementation of the MDIQKD method not only provides a new distance record for both MDIQKD and all types of QKD systems but also, more significantly, achieves a distance that the traditional Bennett-Brassard 1984 QKD would not be able to achieve with the same detection devices even with ideal single-photon sources. This work represents a significant step toward proving and developing feasible long-distance QKD.​

 

[JSCh]

Posted: Nov 02, 2016
Lithium ion extraction

(Nanowerk News) The increasing usage of lithium for batteries or high-performance metals requires improved extraction techniques of lithium from primary sources such as salt lake brines. Chinese scientists have now designed a solid composite membrane that combines the mimicking of the chemical selection process in biological ion channels with molecular sieve technology. In the journal Angewandte Chemie ("Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium-Ion Separation"), they report the effective and fast separation of lithium ions from brines with that membrane.


-> http://www.nanowerk.com/nanotechnology-news/newsid=44967.php

Paper: Yi Guo et al, Polystyrene Sulfonate Threaded through a Metal-Organic Framework Membrane for Fast and Selective Lithium-Ion Separation, Angewandte Chemie International Edition (2016). DOI: 10.1002/anie.201607329

 

[JSCh]

China to build Antarctic astronomical observatory
(Xinhua) 18:21, November 02, 2016

NANJING, Nov. 2 -- China is near to building a South Pole Astronomical Observatory, according to four astronomers onboard the Chinese scientific icebreaker Xuelong (or Snow Dragon), which left the port of Shanghai Wednesday for China's 33th Antarctic Expedition.

One of the astronomers on the trip is hoping that being far from home really does make the heart grow fonder. "I am going to propose to my girlfriend from the South Pole," said Lu Haiping, 32, before he set off.

He and his colleagues have embarked on a five-and-a-half-month trip to the South Pole, though it is not love they are interested in but the stars.

The team includes an astronomer from the National Astronomical Observatories and three from the Nanjing Institute of Astronomical Optics and Technology.

China has sent astronomers to the region every year since 2007 to make preparations to build an astronomical observatory on Dome-A, the highest location in Antarctica, about 4,093 meters above sea level.

The Chinese Antarctic Expedition first visited Dome-A in 2005, which is considered one of the best places on earth to set up an observatory as it stores climate information and atmospheric conditions for the entire globe.

China built its first Antarctic expedition station -- Kunlun Station -- in 2009, about 7.3 km from Dome-A.

It was in this station that preparations for building the Dome-A observatory were carried out.

"On each Antarctic expedition, members have just 20 days to work at the Kunlun Station," Lu said, adding that he and his colleagues have been commissioned to finish 100 projects during the new expedition.

China has established an automated astronomical observation platform at Dome-A, and plans to build a high-elevation Antarctic Terahertz telescope, the world's newest far-infrared observatory.

Lu's primary work on the trip is to maintain the automatic telescope AST3-2 unit, and to dismantle old facilities.

In their South Pole astronomical research, China's astronomers have cooperated with astronomers from the United States, Russia and Germany, such as in the observation of high-energy electrons based on data obtained from various Antarctic observatory facilities.

The astronomical research is expected to shine a light on the origin of cosmic objects, dark matter and extraterrestrial life.

 

[JSCh]

World's first eye-tracking modular unit for VR devices released in Beijing
By Sun Wenyu (People's Daily Online) 15:54, November 03, 2016

Visitors try the games with virtual reality (VR) devices at the 12th China (Shenzhen) International Cultural Industries Fair in Shenzhen. [File photo]


The world's first virtual reality (VR) eye-tracking modular unit, aGlass, was released on Nov. 2 by 7invensun, a technology company based in Zhongguancun in Beijing, known as the Silicon Valley of China. Enabling users of VR devices to control viewpoints using only their eyes, the device offers an unprecedented VR experience.

Traditional VR devices, controlled by head movements and gyroscopes, are often unable to provide satisfying human-computer interaction.

"Such traditional interactions go against the instincts of the human body, which senses surroundings using both eyesight and head movements," explained Xu You, vice president of 7invensun.

The eye-tracking technology simulates the human eye-focusing mechanism and adjusts images to match users' pupil distance, thus solving the problem of vertigo while using VR devices.

Thanks to years of research and development, aGlass is able to cover the maximum range of human eye movement, 30 vertical degrees and 50 horizontal degrees. In addition, the unit also reduces eye-tracking delay to less than 5 milliseconds, with a high-sampling-rate sensor and optimized computing. The aGlass device even makes VR accessible to those who wear glasses, as users can put lenses in the modular unit to ease blurred vision.

The unit has already been officially recognized by HTC, a leading VR company.

 

[JSCh]

Tech insider: What is the world’s No. 1 supercomputer processing?
(People's Daily Online) 13:14, November 04, 2016

Sunway TaihuLight, current fastest supercomputer in the world. File photo.​

Since beginning operation on June 20, China’s Sunway TaihuLight, the world’s fastest supercomputer, has made more than 100 key achievements in 19 fields covering climate, marine life, aerospace, biology, materials science, particle physics, medicine and more.

The supercomputer has worked on important national projects such as predicting the falling trajectory of China's first space station module Tiangong-I, which is set to fall back to Earth in 2017. It has also offered commercial services, processing data for Envision Energy, a Shanghai-based energy technology services provider. The powerful computer calculated China's wind resources from 2014 to 2015 in only 12 days, while simultaneously processing other jobs.

For reference, other supercomputers would need approximately 45 days to achieve the same feat. Sunway TaihuLight has been working more than 60 percent of the time since its deployment, while maintaining a low failure rate of 0.6 percent.

Researchers at the National Supercomputing Center in Wuxi, where the supercomputer is housed, said they have invited scientists from a number of laboratories to work with computing experts at the center to design new software. Fluid mechanics and medical experts have already started to cooperate at the center.

 

[TaiShang]

China's 'Artificial Sun' achieves fusion breakthrough
(People's Daily Online) 15:29, November 03, 2016

[File photo]

Chinese scientists have successfully obtained high-confinement plasma for a record length of time, which experts believe will promote the development of international thermonuclear fusion research.

The recent experiment was conducted using China’s Experimental Advanced Superconducting Tokamak (EAST), an experimental thermonuclear fusion reactor that replicates the energy-generating process of the sun. The experiment demonstrated the sustainability of plasma in the H-mode confinement regime, lasting over one minute. This achievement will be key to the success of the International Thermonuclear Experimental Reactor (ITER), the largest international program dedicated to thermonuclear fusion experiments. It also marks a major step forward for fusion studies, Thepaper.cn reported on Nov. 2.

This is not the first time that EAST has generated enduring plasma. In 2012, plasma in a similar environment was maintained for 32 seconds, breaking the world record at that time. Since then, EAST has had its tungsten diverters and auxiliary heating system upgraded, laying the foundation to create long-pulse, high-confinement plasma.

Officially established in 2006, the EAST fusion reactor is run by the Institute of Plasma Physics in Hefei, which aims for plasma pulses lasting up to 1,000 seconds.

 

[JSCh]

SMO in 14 nm CMOS Production Passes Through Wafer Data Validation in IMECAS
Nov 07, 2016

Recently, technological breakthrough is made in collaborative optimization of light source mask in 14 nm complementary metal oxide semiconductor (CMOS) production in the Institute of Microelectronics of Chinese Academy of Sciences (IMECAS). Researchers completed light source optimization in multi-key layers in the back-end process, including Metal 1X, Metal 1.25X, Via 1X, etc. The optimized light source has passed through the wafer data validation. Compared to the original light source, key indicators are significantly improved. The stability of the lithography process in advanced node is guaranteed to ensure the progress of the follow-up research and development.

Source-mask optimization (SMO) is an essential resolution enhancement technology in 14 nm and below nodes. Aiming at design rules for a particular layer, mask structure, property and structure of photoresist layer and so on, researchers in IMECAS optimized light source shape, intensity distribution and mask shape simultaneously. Customized light source with Max lithography process window and modified mask shape were obtained by this optimization technique. The optimized light source can extend the lithography process window significantly, and improve the quality of graphic exposure and control deficiency effectively.

Based on this technology, R&D team led by WEI Yayi at IMECAS cooperated with Semiconductor Manufacturing International Corporation (SMIC), aiming at such difficult structures under the limit size among key layers as end to end line, line end to line, forbidden pitch and so on, successfully solved the lithography problem of corresponding structures, and effectively extended the resolution limit under the current process node.

Researchers used a reduced Gauss model to replace the complex photoresist model, greatly reduced the time period of the first round of SMO work meanwhile the simulating accuracy can be ensured. The simulation results can be well matched with the wafer data. Wafer verification results show that the optimized light source can significantly improve Depth of Focus (DOF), Mask Error Enhancement Factor (MEEF), Exposure Level (EL), Normalized Image Log Slope (NILS) and other key indicators in the lithography process. Single exposure process window reaches 80 nm. Exposure tolerance reaches more than 10%. Lithography resolution, image quality, and process stability have reached the desired goal, which laid a solid foundation for the following research and development work.


SMO in 14 nm CMOS Production Passes Through Wafer Data Validation in IMECAS---Chinese Academy of Sciences

 

[cirr]

Another breakthrough? @Bussard Ramjet

据中国科学院官方消息，中科院合肥物质科学研究院强磁场科学中心的研究人员在用于混合磁体装置的大型超导高场磁体上实现了10万高斯的设计指标，为40万高斯混合磁体的联调成功奠定了一项关键基础。

稳态强磁场实验装置项目国家“十一五”重大科技基础设施，包括产生40万高斯磁场的混合磁体装置，由口径为920毫米的10万高斯超导磁体及包含其内的30万高斯水冷磁体组合而成，其中的水冷磁体已在9月份的单独试验中成功实现技术指标。

大口径超导高场磁体由于成本高、难度大、风险高、研制周期长等因素，成为混合磁体研制能否成功的关键技术之一。

该超导磁体的研制成功是国际超导技术发展的一个新的里程碑，此前世界上没有如此大型的磁体能够产生10万高斯磁场，也没有能产生10万高斯磁场的超导磁体能够达到如此大的口径。

因此，它的研制成功不仅搭起了我国稳态强磁场科学研究的高平台，也为国际超导高场磁体技术的发展创造了新的成功经验。

大型高场超导磁体装置是一个复杂的系统工程，它不仅需要磁体本身具有良好的电磁性能和机械性能，成功运行还需要氦低温冷却系统、超导磁体电源、安保和控制系统等多个子系统的密切配合和保障，因此，该超导磁体的调试成功，也是对自主研发的各相关子系统的成功检验。

据悉，稳态强磁场能够为物理、材料、化学、生命科学等多学科前沿的研究提供难得的极端实验条件，因此，研制包括超导高场磁体在内的强磁场实验装置对于促进我国科学发展意义重大。不仅如此，大型超导高场磁体技术也具有其它十分重要的应用前景。

强磁场中心将再接再厉，在现有基础上，力争早日完成40万高斯混合磁体装置的联调，不断攀登强磁场技术和科学研究的新高峰。

http://news.mydrivers.com/1/506/506582.htm

 

[Bussard Ramjet]

Another breakthrough? @Bussard Ramjet

据中国科学院官方消息，中科院合肥物质科学研究院强磁场科学中心的研究人员在用于混合磁体装置的大型超导高场磁体上实现了10万高斯的设计指标，为40万高斯混合磁体的联调成功奠定了一项关键基础。

稳态强磁场实验装置项目国家“十一五”重大科技基础设施，包括产生40万高斯磁场的混合磁体装置，由口径为920毫米的10万高斯超导磁体及包含其内的30万高斯水冷磁体组合而成，其中的水冷磁体已在9月份的单独试验中成功实现技术指标。

大口径超导高场磁体由于成本高、难度大、风险高、研制周期长等因素，成为混合磁体研制能否成功的关键技术之一。

该超导磁体的研制成功是国际超导技术发展的一个新的里程碑，此前世界上没有如此大型的磁体能够产生10万高斯磁场，也没有能产生10万高斯磁场的超导磁体能够达到如此大的口径。

因此，它的研制成功不仅搭起了我国稳态强磁场科学研究的高平台，也为国际超导高场磁体技术的发展创造了新的成功经验。

大型高场超导磁体装置是一个复杂的系统工程，它不仅需要磁体本身具有良好的电磁性能和机械性能，成功运行还需要氦低温冷却系统、超导磁体电源、安保和控制系统等多个子系统的密切配合和保障，因此，该超导磁体的调试成功，也是对自主研发的各相关子系统的成功检验。

据悉，稳态强磁场能够为物理、材料、化学、生命科学等多学科前沿的研究提供难得的极端实验条件，因此，研制包括超导高场磁体在内的强磁场实验装置对于促进我国科学发展意义重大。不仅如此，大型超导高场磁体技术也具有其它十分重要的应用前景。

强磁场中心将再接再厉，在现有基础上，力争早日完成40万高斯混合磁体装置的联调，不断攀登强磁场技术和科学研究的新高峰。

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