@article{2977764,
    title = "Performance of 0.75 mm pitch mwpc's operating at high rate",
    author = "Conetti, S. and Kuzminski, J. and Marchionni, A. and Statrs, D. and Haire, M. and Rosati, M. and Simard, A. and Zioulas, G. and Arenton, M. and Cox, B. and Chen, T.Y. and Lai, K.W. and Yao, N. and Delchamps, S. and Mazur, P.O. and Murphy, C.T. and Rameika, R. and Smith, R. and Turkot, F. and Yang, W. and Etemadi, B. and Guffey, K. and Tucker, W. and Fortney, L. and Shen, Q. and Tesarek, R. and Turkington, T. and Ioannu, P. and Kourkoumelis, C. and Koutentakis, I. and Manousakis-Katsikakis, A. and Pramantiotis, T. and Resvanis, L.K. and Vassiliou, M. and Voulgaris, G. and Jenkins, C.M. and Jude, D.J. and Turnbull, L. and Wagoner, D.E. and Mao, H. and Wang, C. and Shen, C.H. and Zhang, N. and Zhang, X. and Rosen, J. and Spiegel, L. and Tzamarias, S.",
    journal = "IEEE Transactions on Nuclear Science",
    year = "1989",
    volume = "36",
    number = "1",
    pages = "112-116",
    issn = "0018-9499, 1558-1578",
    doi = "10.1109/23.34415",
    keywords = "Graphite;  Photons;  Protons, Fermi National Accelerator Laboratory Experiment 705;  Multiwire Proportional Chambers, Proportional Counters",
    abstract = "Three Multiwire Proportional Chambers (MWPC) with high rate capability have been constructed for Fermi National Accelerator Laboratory experiment 705 (Charmonium and Direct Photon production by 7r± , P and p at 300 GeV/c) [1]. Each chamber, with a sensitive area of 308 cm2 consists of three anode planes, wound with 12.5 µm diameter gold-plated Tungsten/Rhenium wire, facing 25 µm graphite-coated kapton cathode planes at a distance of 3 mm. Wire spacing in two of the MWPC (PC-B1 and PC-B2) is 0.75 mm and 1.00 mm in the third one (PC-B3). After a few weeks of running on “Magic Gas” with a beam flux of up to ~ 107 particles/cm2sec, severe damage occurred to the graphite coating. All cathode planes were replaced by aluminized kapton, and the chambers worked successfully for the next 3 months until the end of the run, when a 10% efficiency drop was observed after a total accumulated charge of ~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. © 1989 IEEE"
}