News on China's scientific and technological development.

New progress has been made in the construction of Shanghai Light Source Line Station​

From June 19th to 20th , 2023 , the Conditional Guarantee and Finance Bureau of the Chinese Academy of Sciences organized experts to study the micro-beam white light diffraction line station and superhard multi-functional line in the Shanghai light source line station project of the national " Twelfth Five-Year " major scientific infrastructure construction project. Process tests have been carried out on systems such as the soft and hard support of the station, the material energy line station, and so on. The test expert group consists of Institute of High Energy Physics, Chinese Academy of Sciences, Institute of Physics, Chinese Academy of Sciences, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Guiyang Institute of Geochemistry, Chinese Academy of Sciences, University of Science and Technology of China, Shanghai Jiaotong University, Southwest Jiaotong University, Peking University, Beijing University of Science and Technology It is composed of 16 experts from 11 units including Shanghai University of Science and Technology, Suzhou University, etc. Researcher Hu Tiandou served as the team leader, and Ma Xiaoli and Kuang Peng from the Major Facilities Department of the Financial Bureau of the Chinese Academy of Sciences participated in the process testing meeting.
The expert group listened to the overall report of the Shanghai Light Source Line Station project made by the chief engineer of the project, Researcher Wang Jie, and the self-test reports made by the person in charge of each test project, approved the process test outline, and conducted field tests in groups. According to the actual measurement results, the expert group agreed that the various indicators of the micro-beam white light diffraction line station, superhard multi-functional line station, and material energy line station with soft and hard support all reached the acceptance index, and some were better than the design index.

Driverless taxi services:

5G & 6G bandwidth choices made:

Maikeru said:

5G & 6G bandwidth choices made:

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Yeah, this is one aspect of this story, (the tech war between Huawei and the US government), that no one really wants to talk about. They are more comfortable talking about the phones.

The simple fact is Huawei is ahead, in terms of how advanced their 5G tech is, and in terms of deployment of the 5G networks.

Huawei is not a little bit ahead, they have a significant lead according to reports.

The problem becomes a simple economics problem, where Huawei is big enough and strong enough to become a monopoly.

One point here to be keenly aware of, someone that far ahead will set the standards for the entire industry.

It could be a case of Huawei and the Chinese government setting the standards worldwide for 5G deployment and usage, and for 6G as well.

Every nation has a choice to either adapt and use Chinese standards for 5G and 6G, or use another one. The problem with using the less popular one is fewer people using it, and it may not be compatible with the Chinese networks, which should be everywhere.

That is why the Americans are more comfortable about talking about the fewer amounts of phones sold by Huawei.

The Chinese won't talk about it.

Eventually they will. The Chinese will say here is the standards, take it or leave it.

I think RCEP will adopt it, along with West Asia, South America, and Africa, and some parts of Europe.

3nm (and beyond) Si-core-SiGe-shell gate-all-around (GAA) nanosheet FET by CAS

2 nm node high-performance CMOS logic by Fudan and Xidian

Wondering if this has military uses.

Designed by CAS, a non-resonance fast cycle impulsing power source with full energy storage (非谐振全储能快循环脉冲电源) has passed acceptance test recently. It is for the High Intensity Heavy-ion Accelerator Facility (HIAF). The power source is required to have a max output current of 3900 ampere, peak power of 15 million volt-ampere, and working voltage range from 17v to 4800v. The output current can reach the max in about 1/10 seconds.

News story:

人民网北京7月7日电 （记者赵竹青）记者从中国科学院获悉，由中国科学院近代物理研究所等单位研制的国际首台大型非谐振全储能快循环脉冲电源产品7日在甘肃天水正式下线，并通过了专家组现场测试。

这标志着我国强流重离子加速器装置（HIAF）的建设又迈出了坚实的一步。据了解，HIAF是中国科学院近代物理研究所主持建造的国家“十二五”大科学工程，其中增强器BRing是HIAF装置最核心的组成部分，BRing要求电源输出3900安的大电流、15兆伏安峰值功率功率、高达38000安每秒电流上升速率、以及17伏至4800伏的极宽动态工作范围、小于200毫安的输出精度要求。BRing二极铁电源特殊的脉冲工作模式会在电流脉冲波形上升段和下降段将产生极大地能量吞吐，对电网产生巨大的冲击，给电源系统设计提出了前所未有的挑战。

针对强流重离子加速器装置的严苛要求，中国科学院近代物理研究所加速器团队，创新性地提出了一种非谐振变前励全储能解决方案，经过4年半的集中攻关，解决了41个技术问题，在4项核心技术难题上取得了突破，很好地解决了大功率快循环脉冲电源对电网周期性强冲击和极宽电压范围下的高精度输出指标要求等问题。该电源进入批量生产阶段后，又不断迭代优化工艺方案，实现了电源的模块化、集成化和标准化设计，大幅度提升了电源的可靠性、可维护性和电磁兼容性。

专家介绍，大功率非谐振、变前励、全储能脉冲电源研制成功，使得大型加速器的绿色低碳运行成为可能，在重离子治癌装置及其他应用场合有着广泛的应用前景，也为世界大型加速器特种脉冲电源提供了一种新的实现方案。

A picture of the power source for its size:



Taken from:

Compared to China, the US is wasting their AI resources.

Does anybody know of any Chinese manufacturer of transmission electron microscopes (TEMs)?
I know they now have the capability to mass produce scanning electron microscopes but I have not been able to find any information on TEMs. I've looked on Baidu too but no success.

CAS researchers created a generative AI that designed a functional RISC CPU from scratch in a span of five hours. It's performance is comparable to a 1991 Intel CPU and it reportedly independently re-discovered von Neumann architecture. Obviously a low starting point in terms of performance but the proof of concept is still pretty incredible. Previously AIs like this had only been used to optimize chip designs, not to build them entirely from the ground up.

Anyone remember the NYT opeds about the Chinese system being responsible for them not inventing chatGPT first lmao