Speaker
            
    Che-Kai Chan
        
            (National Synchrotron Radiation Research Center)
        
    Description
Modification of an arc-cell vacuum system (length 14 m) for the cell SR18 in the TPS storage ring is described, which includes (a) replacement of a new bending chamber (B1) with an increased vertical aperture from 9 to 18 mm to prevent the B1 chamber from being exposed to synchronous radiation from the upstream elliptically polarized undulator (EPU), and (b) incensement of three pairs of flanges to separate the old arc-cell vacuum system into four subsystems (S3, B1, S4, B2). In this paper, we will report the manufacturing processes, measurement data and vacuum tests of these vacuum chambers.
| Region represented | Asia | 
|---|---|
| Paper preparation format | Word | 
Author
        
            
                
                
                    
                        Bo-Ying Chen
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
    
        Co-authors
        
            
                
                
                    
                        Che-Kai Chan
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
            
                
                
                    
                        Chia-Mu Cheng
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
            
                
                
                    
                        Chin Shueh
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
            
                
                
                    
                        Chin-Chun Chang
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
            
                
                
                    
                        Jing-Hao Kang
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
            
                
                
                    
                        Wei-Yang Lai
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
            
                
                
                    
                        Yi-Chen Yang
                    
                
                
                        (National Synchrotron Radiation Research Center)
                    
            
        
    
        