arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1706.02110physics.ins-det
收藏

新内部跟踪系统ALICE的材料预算计算

Material Budget Calculation of the new Inner Tracking System, ALICE

Wanchaloem Poonsawat, Chinorat Kobdaj, Mario Sitta, Yupeng Yan

摘要:

ALICE合作项目旨在通过建立专用的重离子探测器来研究强相互作用物质的物理学。内部跟踪系统(ITS)位于ALICE探测器的中心,围绕着相互作用点。现在,ALICE计划升级内部跟踪系统,用于低横向动量的稀有探测器。新的ITS由支撑结构上的七层硅像素传感器组成。新设计的一个目标是将每层的材料预算($X/X_0$)减少到内层的0.3 $\%$和中间层和外层的0.8 $\%$。在这项工作中,我们进行计算的基础上详细的几何描述不同的支撑结构的内,外桶使用ALIROOT。结果表明,内、外筒的材料预算有可能降低到我们所期望的值。这种原型的制造也是可能的。

英文摘要:

The ALICE Collaboration aims at studying the physics of strongly interacting matter by building up a dedicated heavy-ion detector. The Inner Tracking System (ITS) is located in the heart of the ALICE Detector surrounding the interaction point. Now, ALICE has a plan to upgrade the inner tracking system for rare probes at low transverse momentum. The new ITS composes of seven layers of silicon pixel sensor on the supporting structure. One goal of the new design is to reduce the material budget ($X/X_0$) per layer to 0.3$\%$ for inner layers and 0.8$\%$ for middle and outer layers. In this work, we perform the calculations based on detailed geometry descriptions of different supporting structures for inner and outer barrel using ALIROOT. Our results show that it is possible to reduce the material budget of the inner and outer barrel to the value that we have expected. The manufacturing of such prototypes are also possible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑