Belle II SVD ladder assembly procedure and electrical qualification
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- 作者：K. Adamczyk
- 关键词：Belle II ; Silicon vertex detector ; Double sided silicon strip detector ; Origami
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2016
- 出版时间：11 July 2016
- 年：2016
- 卷：824
- 期：Complete
- 页码：381-383
- 全文大小：401 K
文摘
The Belle II experiment at the SuperKEKB asymmetric pan id="mmlsi0002" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0168900215010311&_mathId=si0002.gif&_user=111111111&_pii=S0168900215010311&_rdoc=1&_issn=01689002&md5=be0e854a20a0a82d5736b980435cdc43" title="Click to view the MathML source">ep>+ p>ep>− p> pan>pan class="mathContainer hidden">pan class="mathCode"> pan> pan> pan> collider in Japan will operate at a luminosity approximately 50 times larger than its predecessor (Belle). At its heart lies a six-layer vertex detector comprising two layers of pixelated silicon detectors (PXD) and four layers of double-sided silicon microstrip detectors (SVD). One of the key measurements for Belle II is time-dependent CP violation asymmetry, which hinges on a precise charged-track vertex determination. Towards this goal, a proper assembly of the SVD components with precise alignment ought to be performed and the geometrical tolerances should be checked to fall within the design limits. We present an overview of the assembly procedure that is being followed, which includes the precision gluing of the SVD module components, wire-bonding of the various electrical components, and precision three dimensional coordinate measurements of the jigs used in assembly as well as of the final SVD modules.