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Design and Specifications of Cryostat Models with 2000 Tons Load for Calorimeter Applications

This document outlines the design specifications for two cryostat models, Model-1 and Model-2, both designed to support a load of 2000 tons for a calorimeter. The weights include a calorimeter weighing 2000 tons and a solenoid at approximately 140 tons. Key features include vacuum conditions of 0.1 MPa and optimized thickness for inner vacuum vessels and end plates made of SUS304. The design addresses buckling pressure and safety factors, ensuring structural integrity. Further detailing of the calorimeter's subdivided structure is noted, with focus on stiffness and material properties.

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Design and Specifications of Cryostat Models with 2000 Tons Load for Calorimeter Applications

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  1. Oct. 29, ’04 KEK H. Yamaoka Cryostat design Model-1 2000tons Load condition Weight of the calorimeter: 2000tons Weight of the solenoid : ～140tons Vacuum : 0.1MPa Fixed Fixed Model-2 Thickness of ・Inner vacuum vessel ・End plates were optimized. SUS304 sallow=140MPa • Outer vac. vessel • 40mm Fixed Fixed p: Buckling pressure 0.1MPa x 2(safety factor) 2000tons

  2. 2000tons Fixed Fixed 2000tons x0.3G Fixed Fixed 2000tons Fixed Fixed Model-1 Model-2 t=40mm t=40mm t=60mm t=60mm t=100mm t=100mm 274MPa>140MPa 118MPa<140MPa Material: SUS304 9mm 15mm Stiffness: D 125MPa E: Young’s modulus I: Moment of Inertia 9mm

  3. R4400 t=50mm 4930(Half) R4000 t30mm, 2 layers 5250(Half) R3720 Demands to calorimeter structure; - Calorimeter is divided to several pieces in the axial direction. - One piece of calorimeter is stiff enough. Detail design is not yet done.

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