December, 2006

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New International Record for Superconducting Ion Sources

Undertaken by the Institute of Modern Physics, CAS, ¡°the Superconducting High Charge State ECRIS¡±, a significant research project under CAS Innovation Program recently passed the technical evaluation, creating a new international record for the high charge state icon beam intensity. According to the data provided in the technical test report, the charge state and beam intensity of various high charge state icon beams, such as 16O/40Ar, 129Xe, 40Ca, 58Ni and 208Pb, produced by the said ion sources have all surpassed the designed objectives, thus marking the highest record in this field compared with international efforts.

New Progress Achieved in Molecular Sieve Based Catalysis

Researchers of the Key Laboratory of the Institute of Molecular Nanoscale Structure and Nanotechnology have recently made substantial progress in the study of the MTO mechanism by making use of molecular sieve based capability.

MTO conversion plays an important role in the national economy. This technique provides a way to produce petrochemical industrial raw materials without relying on oil. The research teams led by Song Weiguo and Wan Lijun, respectively, cooperated to control the size of organic intermediate during the conversion of methanol by preparing molecular sieves with pore canals of specific size using the molecular sieve based capability of the unique pore canal structure of the molecular sieves. This makes it possible for the reaction to go on into the intermediate step of catalysis cycle without the production of olefin, thus avoiding the secondary reaction and providing a new idea for study of the methanol conversion mechanism. This result was recently published in theAngewandte Chemie International Edition as VIP article( Angew. Chem. Int. Ed.2006, 6512 6515).

First High Current RFQ Accelerator in China Successfully Developed

With support of the Clean Nuclear Energy Project under the ¡°973 Program¡±, researchers of the High Current Proton Accelerator Group, the Accelerator Center of the Institute of High Energy Physics, CAS, worked hard over the past 5 years to overcome numerous difficulties and have successfully developed a high current (3.5MeV) RFQ accelerator. The accelerator started emitting beams from Jul. 10 this year. The beam effectiveness reached 6% in Oct. 14, which means the pulse repletion rate was 50Hz and the pulse length was 1.2ms. This is the first home grown high current RFQ accelerator in China, with main technical indicators ranking top in the world.

New Photovoltaic Micro-energy System Successfully Developed

Recently, the Institute of Electrical Engineering, CAS has successfully developed the first prototype of autonomous micro-system in China by integrating the photovoltaic micro-energy with the network nodes of radio sensors.

The Research Lab of Micro-nanotechnology and Application of the Institute of Electrical Engineering creatively raised the proposal and independently developed the new photovoltaic micro-energy system, including energy transformation system, energy storage system and energy management system. The said autonomous micro-system has realized the functions such as energy intelligent storage and conversion and the stable voltage output. The system can continuously work for 100 hours without any maintenance and lighting. Its service life is as long as 5 years.

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