IN-SITU WALL CONDITIONING ON HL-1M TOKAMAK
 
                 
                
                    
                                        
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Graphical Abstract
 
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Abstract
    The advanced methods of in-situ wall coating adopted in Hl-1M tokamak were presented. The impurity and hydrogen in the inner walls of fusion device were decreased by means of glow discharge conditioning with helium(HeGDC).In-situ boronization and siliconization and removal of the coating film were introduced.
 
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