Performance of 0.75 mm pitch MWPCs operating at high rate
| العنوان: | Performance of 0.75 mm pitch MWPCs operating at high rate |
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| المؤلفون: | J. L. Rosen, Q. Shen, K.W. Lai, L. K. Resvanis, I. Koutentakis, L.R. Fortney, S. Delchamps, Michael Wayne Arenton, A. Marchionni, C.M. Jenkins, B. Etemadi, S. Conetti, Spyros Tzamarias, J. Kuzminski, N. J. Zhang, He Mao, D. Judd, F. Turkot, Chao Wang, R. P. Smith, M. Vassiliou, M. Haire, Leonard Spiegel, Bradley Cox, R. Tesarek, C.H. Shen, G. Zioulas, K. Guffey, P. Ioannu, P.O. Mazur, G. Voulgaris, T. Turkington, N. Yao, A. Manousakis-Katsikakis, R. Remeika, T. Pramantiotis, T.Y. Chen, W. Yang, D. E. Wagoner, A. Simard, Xiang Zhang, L. Turnbull, M. Rosati, Christine Kourkoumelis, C. T. Murphy, W. Tucker, Dg Stairs |
| المصدر: | IEEE Transactions on Nuclear Science. 36:112-116 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 1989. |
| سنة النشر: | 1989 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Analytical chemistry, chemistry.chemical_element, Sense (electronics), Rhenium, Tungsten, Cathode, Particle detector, Kapton, Anode, law.invention, Nuclear physics, Nuclear Energy and Engineering, chemistry, law, Electrical and Electronic Engineering, Beam (structure) |
| الوصف: | Three multiwire proportional chambers (MWPCs) with high-rate capability have been constructed for Fermi National Accelerator Laboratory experiment 705 (charmonium and direct photon production by pi /sup +or-/,p and p at 300 GeV/c). Each chamber, with a sensitive area of 308 cm/sup 2/, consists of three anode planes, wound with 12.5- mu m-diameter gold-plated tungsten/rhenium wire, facing 25- mu m graphite-coated kapton cathode planes at a distance of 3 mm. Wire spacing is 0.75 mm in two of the MWPCs and 1.00 mm in the third one. After a few weeks of running on 'magic gas' with a beam flux of up to approximately 10/sup 7/ particles/cm/sup 2/ s, severe damage occurred to the graphite coating. All cathode planes were replaced by aluminized kapton, and the chambers worked successfully for the next three months until the end of the run, when a 10% efficiency drop was observed after a total accumulated charge of approximately 1 C/cm of sense wire. After the end of the run the chambers were disassembled and inspected. A white deposit with a characteristic wire pattern etched away from the Al coating was observed in the region of the beam spot. > |
| تدمد: | 1558-1578 0018-9499 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::2584570cd225b322d3fd32eb628cadc3 https://doi.org/10.1109/23.34415 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........2584570cd225b322d3fd32eb628cadc3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15581578 00189499 |
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