Design of large vacuum chamber for VEC superconducting cyclotron beam line switching magnet
| Autor: | Gautam Pal, Subhasis Gayen, C. Nandi, Sanjay Ramrao Bajirao, C Mallik, Sumantra Bhattacharya, Suvadeep Roy, Santosh Kumar Mishra |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 390:012017 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/390/1/012017 |
| Popis: | VEC K500 superconducting cyclotron will be used to accelerate heavy ion. The accelerated beam will be transported to different beam halls by using large switching magnets. The vacuum chamber for the switching magnet is around 1000 mm long. It has a height of 85 mm and width varying from 100 mm to 360 mm. The material for the chamber has been chosen as SS304.The material for the vacuum chamber for the switching magnet has been chosen as SS304. Design of the vessel was done as per ASME Boiler and Pressure Vessel Code, Section VIII, Division 1. It was observed that primary stress values exceed the allowable limit. Since, the magnet was already designed with a fixed pole gap; increase of the vacuum chamber plate thickness restricts the space for beam transport. Design was optimized using stress analysis software ANSYS. Analysis was started using plate thickness of 4 mm. The stress was found higher than the allowable level. The analysis was repeated by increasing plate thickness to 6 mm, resulting in the reduction of stress level below the allowable level. In order to reduce the stress concentration due to sharp bend, chamfering was done at the corner, where the stress level was higher. The thickness of the plate at the corner was increased from 6 mm to 10 mm. These measures resulted in reduction of localized stress. |
| Databáze: | OpenAIRE |
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