为配合BEPC Ⅱ(Beijing Electron Positron Collider,即北京正负电子对撞机)的改造,目前北京谱仪(Beijing Spectrometer,简称BES)正在进行第三期升级改造工程,称为BESⅢ。改造后的BESⅢ将大幅度提高探测器性能。TOF(Time of Flight),即...为配合BEPC Ⅱ(Beijing Electron Positron Collider,即北京正负电子对撞机)的改造,目前北京谱仪(Beijing Spectrometer,简称BES)正在进行第三期升级改造工程,称为BESⅢ。改造后的BESⅢ将大幅度提高探测器性能。TOF(Time of Flight),即飞行时间计数器,是BESⅢ的重要子系统,其负责时间和电荷测量的前端电子学读出模块(Front End Electronics Module,简称FEE)要求时间分辨率好于25ps,电荷分辨率好于10bit。为了对FEE模块的性能进行测试,保证工程进度和质量,一个完备的测试控制/分析系统的建立是十分必要的。文章将简要论述其中测试控制及分析软件的设计。展开更多
The paper revealed the place and role of Russia in the global market of platinum metals, highlighted features of pricing in the export of Russian platinum group metals, the main problems of pricing in the export contr...The paper revealed the place and role of Russia in the global market of platinum metals, highlighted features of pricing in the export of Russian platinum group metals, the main problems of pricing in the export contracts related to the instability of markets and imperfect currency and customs legislation of the Russian Federation, proposed innovative ways to solutions to existing problems in the preparation and conclusion of export contracts.展开更多
文摘为配合BEPC Ⅱ(Beijing Electron Positron Collider,即北京正负电子对撞机)的改造,目前北京谱仪(Beijing Spectrometer,简称BES)正在进行第三期升级改造工程,称为BESⅢ。改造后的BESⅢ将大幅度提高探测器性能。TOF(Time of Flight),即飞行时间计数器,是BESⅢ的重要子系统,其负责时间和电荷测量的前端电子学读出模块(Front End Electronics Module,简称FEE)要求时间分辨率好于25ps,电荷分辨率好于10bit。为了对FEE模块的性能进行测试,保证工程进度和质量,一个完备的测试控制/分析系统的建立是十分必要的。文章将简要论述其中测试控制及分析软件的设计。
文摘The paper revealed the place and role of Russia in the global market of platinum metals, highlighted features of pricing in the export of Russian platinum group metals, the main problems of pricing in the export contracts related to the instability of markets and imperfect currency and customs legislation of the Russian Federation, proposed innovative ways to solutions to existing problems in the preparation and conclusion of export contracts.
