Extended barrel support saddle design and analysis.

Guarino, V. ; Grudzinski, J. ; Petereit, E.

Argonne National Laboratory

关键词: Safety Engineering;    Atlas Superconducting Linac;    Calorimeters;    43 Particle Accelerators;    Cryostats;   

DOI  :  10.2172/793907
RP-ID  :  ANL-HEP-TR-01-097
RP-ID  :  W-31-109-ENG-38
RP-ID  :  793907

美国|英语

来源: UNT Digital Library

【 摘 要 】

This paper summarizes the extensive structural analysis and design of the support saddles for the Extended Barrel of the ATLAS Tilecalorimeter that has taken place at Argonne National Laboratory over the past several months. This work has been a continuation and expansion of work that has taken place over the course of several years within the ATLAS Tilecalorimeter collaboration. This paper will be divided into four main sections. Section 1 is the introduction to the analysis and will give a brief history of the work that had previously been done. Section 2 examines the design and structural analysis that has occurred on the support saddles. The design of the support saddles has evolved over the last few months. There are three main analyses of the saddles that are discussed in Section 2. First, the forces that act upon the support saddles and the resulting deflections and stresses are examined when the support saddle is subjected only to gravity loading. Next, the saddles are examined when subjected to a combination of gravity and a seismic load of .15g in the X, Y, and Z directions. Finally, the saddles are analyzed when subjected to a combination of gravity, magnetic, and seismic loading. Section 3 describes a detailed analysis of the back cryostat support structure in the Extended Barrel. This design has evolved significantly throughout the analysis process and every design iteration and analysis is described in detail. The initial design is described in Section 3.1 that analyzed the back cryostat support only under vertical static loading. Section 3.2 then examines the stiffening of the cryostat support plate that had to be included in the design in order to provide sufficient stiffness in the case of seismic loading in the X, Y, and Z directions. Finally, Section 3.3 describes the final design, which has a modified stiffener.