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上海国资 2024年第4期 9-10页

作者： 1.新华社 2.国家数据局新华社国家数据局

国务院国资委全面深化改革领导小组召开2024年第一次全体会议2024年3月29日，国务院国资委全面深化改革领导小组召开2024年第一次全体会议。会议指出，今年是深入实施国有企业改革深化提升行动承上启下的关键一年，要聚焦重点难点任务...

国务院国资委全面深化改革领导小组召开2024年第一次全体会议2024年3月29日，国务院国资委全面深化改革领导小组召开2024年第一次全体会议。会议指出，今年是深入实施国有企业改革深化提升行动承上启下的关键一年，要聚焦重点难点任务全力攻坚，紧盯重点任务和关键时点，全力以赴抓好各项任务落实。

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Coupling measurement and correction at the SSRF storage ring

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Science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 201-206页

作者： ManZhou Zhang (1) Jie Hou (1) HaoHu Li (1) 1. Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China

Brightness is an important parameter for 3rd generation light source. Correcting the emittance coupling is a realistic way to increase brightness without any additional equipment in a machine under operation. The main sources of emittance coupling are betatron coupling and vertical dispersion. At the SSRF storage ring, tune split and LOCO are used to measure the respective betatron and emittance coupling. Both of these sources can be corrected by skew quadrupoles. By measuring the skew quadrupole-coupling response matrix, betatron coupling can be changed from 0.014% to 2%. But the vertical dispersion changes at the same time. LOCO can find the suitable setting to correct simultaneously the betatron coupling and vertical dispersion. The emittance coupling can be reduced to 0.17% by this method. More simulations show the potential for smaller emittance coupling if more skew quadrupoles are employed.

关键词： emittance coupling betatron coupling vertical dispersion tune split LOCO

Tuner design and RF test of a four-rod RFQ

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Science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 271-273页

作者： QuanFeng Zhou (1) Kun Zhu (1) ZhiYu Guo (1) MingLei Kang (1) ShuLi Gao (1) YuanRong Lu (1) JiaEr Chen (1) 1. State Key Lab of Nuclear Physics and Technology School of Physics Peking University Beijing 100871 China

A mini-vane four-rod radio frequency quadruple (RFQ) accelerator has been built for neutron imaging. The RFQ will operate at 201.5 MHz, and its length is 2.7 m. The original electric field distribution along the electrodes is not flat. The resonant frequency needs to be tuned to the operating value. And the frequency needs to be compensated for temperature change during high power RF test and beam test. As tuning such a RFQ is difficult, plate tuners and stick tuners are designed. This paper will present the tuners design, the tuning procedure, and the RF properties of the RFQ.

关键词： four-rod RFQ electric-field distribution RF tuning RF measurement

Synthesis and Properties of Polymeric Host Materials Constructed by Silane-carbazole Backbone and Electron-affinitive Cyanohexyl Substituent for Blue Phosphorescence Dopant

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Chemical Research in Chinese Universities 2017年第2期33卷 287-293页

作者： Dehua Hu (1) He Liu (1) Xiaoxiao Li (1) Xiaoyi Sun (1) Fang Lu (2) Qing Bai (1) Ping Lu (1) 1. State Key Laboratory of Supramolecular Structure and Materials Jilin University Changchun 130012 P. R. China 2. Pharmacy Department Changchun Medical College Changchun P. R. China

A series of blue phosphor hosts, using 3,6-1inked carbazole with δ-π tetraphenylsilane segment as the mainchain and modified by peripheral cyanohexyl group with different ratios, was designed and synthesized. These poly-mers show good solubility in common organic solvents. They all possess wide bandgap of 3.40 eV, high thermalstabilities and good film forming abilities. The peripheral cyanohexyl substituents have no effect on the polymerbackbones but enhance the electron transporting properties of the polymers in devices. Among them, doped devicesusing poly[（tetraphenylsilicon/9-hexy1-9H-3,6-carbazole）50-co-（tetraphenylsilicon/9-hexanenitrile-9H-3,6-carbazole）]50（PCNCzSi50） as the host and bis[（4,6-difluorophenyl）pyridinato-N, C2]-（picolinato）iridium（Ⅲ）（FIrpic） as the guestshow the best performance with the maximum current efficiency and power efficiency of 2.00 cd/A and 1.40 lm/W,respectively.

关键词： Cyano group Host Phosphorescence Polymer Wide bandgap

Design and manufacturing of the antechamber for BEPCII storage rings

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Science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 164-168页

作者： Ling Kang (1) ChunHua Li (1) KaiXi Huang (1) HuaMin Qu (1) YiQing Zou (1) Yan Zhang (1) LuXiang Han (1) LingLing Men (1) 1. Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

Antechamber which composes the arc vacuum chamber of storage rings is one of the key devices of BEPCII. It has the characteristic of various specifications, large size, complex structure, and high dimension accuracy. This paper gives a review on the structure features and the procedure of production, including the mechanical machining process, cleaning and welding process of high vacuum aluminum alloy, ultrahigh vacuum test and so on. In view of the occurrence of the concave deformation, the reasons are analyzed and the correction method developed is introduced too.

关键词： antechamber cleaning welding form correction

Three-dimensional Flower-like Rutile TiO2 Microsphere Composed of Nanorods： a Potential Material as Light Scattering Layer for DSSCs

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Chemical Research in Chinese Universities 2017年第2期33卷 298-304页

作者： Yan Shi (1) Yulin Yang (1) Guohua Dong (1) (2) Yanxia Jiang (1) Liguo Wei (3) Ting Su (1) Ruiqing Fan (1) 1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China 2. College of Chemistry and Chemical Engineering Qiqihar University Qiqihar 161006 P. R. China 3. College of Environmental and Chemical Engineering Heilongjiang University of Science and Technology Harbin 150022 P. R. China

The low spectrum utilization and the recombination of photo-generated electrons are the main challengesfor improving the performance of dye sensitized solar cells（DSSCs）. In this article, a three-dimensional flower-likeruffle titanittm dioxide（TDF-TiO2） was successfully synthesized via a simple sol-thermal process. X-Ray diffractionpatterns（XRD） and scan electron microscopy（SEM） images exhibit that the TDF-TiO2 are the futile TiO2 microspherecomposed of lots of regular cuboid nanorods. Applying this TDF-TiO2 as light scattering layer on the photoanode ofDSSCs, the devices present an excellent photovoltage performance, yielding a power conversion efficiency（PCE） of7.69%, which can be mainly attributed to the enhanced light utilization and the reduced recombination of pho-to-generated electrons upon a combined analysis of electrochemical impedance spectroscopy（EIS）, open-circuit vol-tage decay（OCVD）, and intensity-modulated photocurrent spectroscopy and intensity-modulated photo voltage spec-troscopy（IMPS/1MVS）, etc. As a conclusion, TDF-TiO2 is a potential material as light scattering layer and opticaltransition medium to improve the performance of DSSCs, and this work further demonstrated that regulating themorphology and particle size of TiO2 is an efficient approach for enhancing the performance of DSSCs by optimizingthe utilization of light and the transporting behaviors of photo-generated electrons.

关键词： Dye sensitized solar cell Photoanode Three-dimensional flower-like rutile TiO2 Light scattering layer

The　synthetical　elastic　characteristic　parameters　of　earth　tide　and　its　abnormal　precursor　evolution

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Acta Seismologica Sinica(English Edition) 1998年第4期11卷 449-454页

作者： Yan-Bin Zhang (1) Jun Jiang (1) Xu-Dong Li (1) Hui Li (1) 1. Institute of Seismology China Seismological Bureau 430071 Wuhan China

ＴｈｅｓｙｎｔｈｅｔｉｃａｌｅｌａｓｔｉｃｃｈａｒａｃｔｅｒｉｓｔｉｃｐａｒａｍｅｔｅｒｓｏｆｅａｒｔｈｔｉｄｅａｎｄｉｔｓａｂｎｏｒｍａｌｐｒｅｃｕｒｓｏｒｅｖｏｌｕｔｉｏｎＹＡＮ－ＢＩＮＺＨＡＮＧ（张雁滨）ＪＵＮ... 详细信息

ＴｈｅｓｙｎｔｈｅｔｉｃａｌｅｌａｓｔｉｃｃｈａｒａｃｔｅｒｉｓｔｉｃｐａｒａｍｅｔｅｒｓｏｆｅａｒｔｈｔｉｄｅａｎｄｉｔｓａｂｎｏｒｍａｌｐｒｅｃｕｒｓｏｒｅｖｏｌｕｔｉｏｎＹＡＮ－ＢＩＮＺＨＡＮＧ（张雁滨）ＪＵＮＪＩＡＮＧ（蒋骏）ＸＵ－ＤＯＮＧＬ...

关键词： tide observation physical synthesis Love number anomalous evolution

Spin squeezing in Bose-Einstein condensates： Limits imposed by decoherence and non-zero temperature

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Frontiers of physics 2012年第1期7卷 86-97页

作者： Alice Sinatra (1) Jean-Christophe Dornstetter (1) Yvan Castin (1) 1. Laboratoire Kastler Brossel Ecole Normale Supérieure UPMC and CNRS Paris France

We consider dynamically generated spin squeezing in interacting bimodal condensates. We show that particle losses and non-zero temperature effects in a multimode theory completely change the scaling of the best squeezing for large atom numbers. We present the new scalings and we give approximate analytical expressions for the squeezing in the thermodynamic limit. Besides reviewing our recent theoretical results, we give here a simple physical picture of how decoherence acts to limit the squeezing. We show in particular that under certain conditions the decoherence due to losses and non-zero temperature acts as a simple dephasing.

关键词： Bose-Einstein condensate decoherence

Progress in the beam commissioning of separated function RFQ accelerator

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Science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 222-224页

作者： MingLei Kang (1) YuanRong Lu (1) Zhi Wang (1) Kun Zhu (1) XueQing Yan (1) ZhiYu Guo (1) ShuLi Gao (1) ShiXiang Peng (1) Ao Liu (2) JiaXun Fang (1) JiaEr Chen (1) 1. State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China2. Department of Physics Indiana University Bloomington IN 47405 USA

Separated Function RFQ (SFRFQ) was proposed as a post accelerator of RFQ to accelerate heavy ions at low frequency. It introduces gap accelerating in the quadrupole electrodes, and therefore it has higher accelerating efficiency than the conventional RFQ accelerator. The first SFRFQ prototype cavity has been specially designed and constructed as a post accelerator to accelerate O+ beam from 1.03 MeV to 1.64 MeV. Based on accomplishment of low power measurement and high power test, the beam commissioning was carried out to verify its feasibility. The measured energy gain per cell of SFRFQ is 45 keV, which is about 60% higher than that of Peking University Integral Split Ring (ISR) RFQ.

关键词： separated function RFQ beam commissioning energy spectrum