Chinese Physics C > 2007, Vol. 31 > Issue(5): 492-495

Gas Cherenkov Detector Calibration Correction for Small Angle GDH Experiment in Hall-A

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China2 Department of Physics, Huangshan University, Huangshan, Anhui 245021, China

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Abstract：
Due to the change of the hardware and high voltage during the small angle GDH experiment data-takeing, the CO ₂gas threshold Cherenkov detector on HRS at Hall-A in Jefferson Jlab(JLab) was calibrated for seven times. The ADC signals of the single photo-electron peak for all ten PMTs were scaled to two hundred. The electrons could be separated from π by the detector after the calibration correction.

References

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LV Hai-Jiang, YAN Xin-Hu, YE Yun-Xiu, JIANG Yi, ZHANG Pei and YE Qiu-Jian. Gas Cherenkov Detector Calibration Correction for Small Angle GDH Experiment in Hall-A[J]. Chinese Physics C, 2007, 31(5): 492-495.

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Received: 2006-10-16
Revised: 2006-11-21

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沈阳化工大学材料科学与工程学院沈阳 110142

Gas Cherenkov Detector Calibration Correction for Small Angle GDH Experiment in Hall-A

Corresponding author:LV Hai-Jiang,

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China2 Department of Physics, Huangshan University, Huangshan, Anhui 245021, China

Received Date:2006-10-16
Accepted Date:2006-11-21
Available Online:2007-05-05

Abstract:Due to the change of the hardware and high voltage during the small angle GDH experiment data-takeing, the CO₂gas threshold Cherenkov detector on HRS at Hall-A in Jefferson Jlab(JLab) was calibrated for seven times. The ADC signals of the single photo-electron peak for all ten PMTs were scaled to two hundred. The electrons could be separated from π by the detector after the calibration correction.