Test of BESⅢ RPC in the avalanche mode

HAN Ji-Feng; ZHANG Jia-Wen; CHEN Jin; ZHANG Qing-Min; LIU Qian; XIE Yu-Guang; QIAN Sen; MA Lie-Hua

doi:10.1088/1674-1137/32/5/009

Chinese Physics C> 2008, Vol. 32> Issue(5) : 373-376 DOI: 10.1088/1674-1137/32/5/009

Test of BESⅢ RPC in the avalanche mode

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Abstract：
The installation of the BESⅢ RPC system has been completed. Cosmic ray test results show that they perform very well in streamer mode and meet the BESⅢ requirements. We have tested several RPCs in the avalanche mode with the addition of extra SF₆ in the gas mixture. We find an efficiency plateau that reaches ～95%, and a time resolution of 1.8 ns. This demonstrates that the BESⅢ-type RPC can work in the avalanche mode as well.

References

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. Santonico R et al. Nucl. Instrum. Methods A, 1981, 187:3772. XIE Yu-Guang et al. HEP NP, 2007, 31(1): 70 (in Chinese)3. ZHANG J et al. Nucl. Instrum. Methods A, 2005, 540: 1024. ZHANG Jia-Wen et al. HEP NP, 2003, 27(7): 615 (in Chinese)5. ZHANG Jia-Wen et al. HEP NP, 2003, 27(11): 1019 (in Chinese)6. ZHANG J et al. Nucl. Instrum. Methods A, 2007, 580:12507. HAN Ji-Feng et al. The Quality Control and Database on Resistive Plate Chambers for the BESⅢ Experiment. Chin.Phys. C. to be published8. LIU Qian et al. HEP NP, 2006, 30(4): 327 (in Chinese)9. HAN J et al. Nucl. Instrum. Methods A, 2007, 577: 552

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HAN Ji-Feng, ZHANG Jia-Wen, CHEN Jin, ZHANG Qing-Min, LIU Qian, XIE Yu-Guang, QIAN Sen and MA Lie-Hua. Test of BESⅢ RPC in the avalanche mode[J]. Chinese Physics C, 2008, 32(5): 373-376. doi: 10.1088/1674-1137/32/5/009

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Received: 2007-08-13
Revised: 2007-10-09

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沈阳化工大学材料科学与工程学院沈阳 110142

Test of BESⅢ RPC in the avalanche mode

Corresponding author: HAN Ji-Feng,

Received Date: 2007-08-13
Accepted Date: 2007-10-09
Available Online: 2008-05-05

Abstract:

The installation of the BESⅢ RPC system has been completed. Cosmic ray test results show that they perform very well in streamer mode and meet the BESⅢ requirements. We have tested several RPCs in the avalanche mode with the addition of extra SF₆ in the gas mixture. We find an efficiency plateau that reaches ～95%, and a time resolution of 1.8 ns. This demonstrates that the BESⅢ-type RPC can work in the avalanche mode as well.