CAJ | 학술논문

束流管位于北京谱仪Ⅲ（BES Ⅲ）中心位置，是最小壁厚为0.6 mm的真空薄壁夹层圆管。新一代北京正负电子对撞机（BEPC Ⅱ）在运行时将会有更多的高次模辐射（HOM ）和同步辐射（SR）热负荷作用于束流管的内表面，使束流管内产生辐射热应力。本文从数值模拟和实验两方面对BES Ⅲ束流管应力场进行研究，结果表明，束流管在一端完全固支一端轴向自由的约束条件下，当内部辐射热负荷达到最大值750 W时，束流管各零部件---铍管、铝放大腔、过渡银环、铜管、不锈钢法兰的最大应力分别为21.9、6.9、5.0、9.1、24.4 M Pa ，束流管整体安全系数为11.0。目前束流管正在安全运行，保证了BEPC Ⅱ的正常工作和BES Ⅲ的精确粒子探测。
속류관위우북경보의Ⅲ（BES Ⅲ）중심위치，시최소벽후위0.6 mm적진공박벽협층원관。신일대북경정부전자대당궤（BEPC Ⅱ）재운행시장회유경다적고차모복사（HOM ）화동보복사（SR）열부하작용우속류관적내표면，사속류관내산생복사열응력。본문종수치모의화실험량방면대BES Ⅲ속류관응력장진행연구，결과표명，속류관재일단완전고지일단축향자유적약속조건하，당내부복사열부하체도최대치750 W시，속류관각령부건---피관、려방대강、과도은배、동관、불수강법란적최대응력분별위21.9、6.9、5.0、9.1、24.4 M Pa ，속류관정체안전계수위11.0。목전속류관정재안전운행，보증료BEPC Ⅱ적정상공작화BES Ⅲ적정학입자탐측。
The beam pipe is located in the center of the Beijing Spectrometer Ⅲ (BES Ⅲ) .It is a vacuum sandwich pipe with the thinnest wall thickness of 0.6 mm .During the opera-tion of the new generation Beijing Electron and Positron Collider (BEPC Ⅱ) ,the inner surface of the beam pipe is subjected to high radiation heat loads of high order mode radiation (HOM ) and synchrotron radiation (SR) ,w hich will lead to the generation of the thermal stress .Hence ,a beam pipe with cooling structure was designed ,and stress fields of the beam pipe were studied by experiment and finite-element simulations .When the beam pipe was installed that one end was fixed completely and the other end was free along the axis ,and the thermal load on the inner surface of the beam pipe reached itsmaximum value of 750 W ,the results show that the maximum stress of the beryllium pipe ,aluminum enlarged cavity ,silver transition tube ,copper tube and stainless steel flange are 21.9、6.9、5.0、9.1、24.4 M Pa respectively .T he safety factor of the beam pipe is 11.0 .At present ,the BES Ⅲ beam pipe is operating safely ,thereby ensuring that BEPC Ⅱ operates normally and that BES Ⅲ detects particles accurately .