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Prototype studies on the forward MWDC tracking array of the external target experiment at HIRFL-CSR
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DOI：10.1088/1674-1137/38/12/126002.png)
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Abstract
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A prototype of the forward tracking array consisting of three multiwire drift chambers (MWDC) for the external target experiment (CEE) at the Heavy Ion Research Facility at the Lanzhou -Cooling Storage Ring (HIRFL-CSR) has been assembled and tested using cosmic rays. The signals from the anode wires are amplified and fed to a Flash-ADC to deliver the drift time and charge integration. The performances of the array prototype are investigated under various high voltages. For the tracking performances, after the space-time relation (STR) calibration and the detector displacement correction, the standard deviation of 223 mu m of the residue is obtained. The performances of the forward MWDCs tracking array meets the requirements of CEE in design.
Keywords:
external target experiment
multiwire drift chamber
flash-ADC
tracking
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