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                                 Abstract:The two dimensional drift chamber was formed by gluing a delay-line in a MIT-Harvard type drift chamber. An average drift velocity about 3.34cm/μs was obtained when the chamber was operated at plateau region and filled with P-9 gas. Its average space resolution is 570μm. The output signal amplitude of the chamber being changed when alter the incident particle's (both β- and X-ray) position was observed.
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                        References
	
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