Journal ArticleDOI
The Topaz Time Projection Chamber
T. Kamae,Hiroaki Aihara,Ryoji Enomoto,H. Fujii,T. Fujii,R. Itoh,N. Kusuki,T. Miki,A. Shirahashi,Tadayuki Takahashi,Masaaki Tanaka,A. DuBois,R.C. Jared,Frederick A. Kirsten,P. Salz,Hitomi Ikeda,H. Iwasaki,S. Iwata,Takeshi Matsuda,Koji Nakamura,Akira Yamamoto,M. Yamauchi +21 more
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TLDR
A time projection chamber (TPC) is under construction for the TOPAZ e + e − experiment at TRISTAN as discussed by the authors, which is made of multilayer G10 boards for better electric and thermal isolation.Abstract:
A Time Projection Chamber (TPC) is under construction for the TOPAZ e + e − experiment at TRISTAN. The dimension of the TPC is 260 cm in diameter and 300 cm in axial length. Fin-type fine field cages are set inside GFRP insulator cylinders which also serve as the pressure container. The sector is made of multilayer G10 boards for better electric and thermal isolation. The cathode pads are substantially larger in area than those of the PEP4-TPC and having zigzag-shaped boundary. These serve to maintain high spatial resolution with fewer number of pad channels. Signals are amplified by low noise preamplifiers and shaping amplifiers, and, stored and digitized by FASTBUS based CCD-digitizers. Digitized information is preprocessed and sent to VAX 11/780 at a rate 2 MHz per 32 bit word. Nitrogen LASER beam will be used extensively with the LASER beacon system for calibration. Test results on production prototypes are also reported.read more
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Journal ArticleDOI
Parton fragmentation functions
Andreas Metz,A. Vossen +1 more
TL;DR: The field of fragmentation functions of light quarks and gluons is reviewed in this paper, where the dependence of the fragmentation functions on transverse momenta and on polarization degrees of freedom is examined.
Journal ArticleDOI
Parton Fragmentation Functions
Andreas Metz,A. Vossen +1 more
TL;DR: The field of fragmentation functions of light quarks and gluons is reviewed in this paper, where the dependence of the fragmentation functions on transverse momenta and on polarization degrees of freedom is examined.
Journal ArticleDOI
Measurement of inclusive particle spectra and test of MLLA prediction in e+e− annihilation at s=58Gev
R. Itoh,M. Yamauchi,A. Yamaguchi,K. Abe,Tomohiro Abe,Iki Adachi,K. Adachi,Masato Aoki,S. Awa,K. Emi,Ryoji Enomoto,H. Fujii,Keisuke Fujii,T. Fujii,J. Fujimoto,K. Fujita,N. Fujiwara,H. Hayashii,B. Howell,N. Iida,Y. Inoue,Hiroyuki Iwasaki,M. Iwasaki,K. Kaneyuki,R. Kajikawa,S. Kato,S. Kawabata,H. Kichimi,Masakazu Kobayashi,D.S. Koltick,I. Levine,S. Minami,K. Miyabayashi,A. Miyamoto,K. Muramatsu,Koichi Nagai,K. Nakabayashi,E. Nakano,O. Nitoh,S. Noguchi,A. Ochi,F. Ochiai,N. Ohishi,Y. Ohnishi,Yasuhiro Ohshima,Hideki Okuno,T. Okusawa,T. Shinohara,A. Sugiyama,Shiro Suzuki,K. Takahashi,T. Takahashi,Toru Tanimori,Toshiaki Tauchi,Y. Teramoto,N. Toomi,T. Tsukamoto,O. Tsumura,S. Uno,Tsuyoshi Watanabe,Y. Watanabe,Akira Yamamoto +61 more
TL;DR: In this article, the authors compared the MLLA model with a modified leading log approximation (MLLA) model to measure the energy dependence of the peak positions of the spectra.
Journal ArticleDOI
Measurement of the inclusive cross section of jets in γγ interactions at TRISTAN
H. Hayashii,A. Miyamoto,M. Iwasaki,S. Noguchi,N. Fujiwara,T. Abe,K. Abe,I. Adachi,M. Aoki,S. Awa,R. Belusevic,K. Emi,Ryoji Enomoto,H. Fujii,Keisuke Fujii,T. Fujii,J. Fujimoto,K. Fujita,B. Howell,N. Iida,Hirokazu Ikeda,R. Itoh,Hiroyuki Iwasaki,R. Kajikawa,S. Kato,S. Kawabata,H. Kichimi,Masakazu Kobayashi,D.S. Koltick,I. Levine,K. Miyabayashi,K. Muramatsu,Koichi Nagai,T. Nagira,E. Nakano,K. Nakabayashi,Osamu Nitoh,F. Ochiai,Y. Ohnishi,Hideki Okuno,T. Okusawa,K. Shimozawa,T. Shinohara,A. Sugiyama,N. Sugiyama,Shiro Suzuki,K. Takahashi,T. Takahashi,M. Takemoto,Toru Tanimori,T. Tauchi,F. Teramae,Y. Teramoto,N. Toomi,T. Toyama,T. Tsukamoto,S. Uno,Y. Watanabe,A. Yamaguchi,A. Yamamoto,M. Yamauchi +60 more
TL;DR: In this article, the authors investigated the properties of jet production in almost real γγ collisions at √s=58 GeV with the TOPAZ detector at the TRISTAN e+e− collider.
Journal ArticleDOI
Time projection chambers
TL;DR: The time projection chamber (TPC) was originally proposed to provide 3D information for tracking and momentum measurement together with particle identification by multiple ionization sampling, in a compact detector.
References
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Journal ArticleDOI
The time projection chamber
J. Marx,David R. Nygren +1 more
TL;DR: In this article, the authors proposed to combine the particle-identification function in the same detector volume as the tracking and momentum-measurement functions, which achieves substantial reduction in overall size.
Journal ArticleDOI
Gated time projection chamber
TL;DR: In this article, the authors describe test results on the operation of a gated time projection chamber and show that symmetric pulses of ±120 V can turn the detector from an insensitive state to a sensitive state without impairing the readout of the chamber for more than 2.5 μs.
Journal ArticleDOI
Spatial Resolution of the PEP-4 Time Projection Chamber
Hiroaki Aihara,M. Alston-Garnjost,D. H. Badtke,J. A. Bakken,A. Barbaro-Galtieri,A. V. Barnes,B. A. Barnett,Barry Blumenfeld,A. D. Bross,C. D. Buchanan,W. C. Carithers,O. Chamberlain,J. Chiba,C.Y. Chien,Allan G Clark,O. I. Dahl,C. T. Day,P. Delpierre,K. A. Derby,P. H. Eberhard,D. L. Fancher,H. Fujii,T. Fujii,B. Gabioud,J. W. Gary,W. Gorn,N. J. Hadley,J. M. Hauptman,B. Heck,H. Hilke,J. E. Huth,J. Hylen,H. Iwasaki,T. Kamae,R. W. Kenney,L. T. Kerth,R. I. Koda,R. R. Kofler,K. K. Kwong,J. G. Layter,C. S. Lindsey,S. C. Loken,X-Q. Lu,G. R. Lynch,L. Madansky,R. J. Madaras,R. Majka,J. Mallet,P. S. Martin,K. Maruyama,J. N. Marx,J. A. J. Matthews,S. O. Melnikoff,W. Moses,P. Nemethy,D. R. Nygren,P. J. Oddone,D. A. Park,A. Pevsner,M. Pripstein,P. R. Robrish,M. T. Ronan,R. R. Ross,F. R. Rouse,G. Shapiro,M. D. Shapiro,B. C. Shen,W. E. Slater,M. L. Stevenson,D. H. Stork,H. K. Ticho,N. Toge,M. Urban,G. J. Van Dalen,R. van Tyen,H. Videau,Mitchell Wayne,W. A. Wenzel,R. F. vanDaalen Wetters,M. Yamauchi,M. E. Zeller,W-M. Zhang,Ronald Madaras +82 more
TL;DR: In this paper, the spatial resolution and response of the segmented cathode pads of the PEP-4 TPC have been measured with data taken at 8.5 atmospheres of 80% Argon-20% Methane gas with a 4kG magnetic field.
Journal ArticleDOI
Time‐projection chambers
TL;DR: The timeprojection chamber has proven so useful as a particle detector that some are calling it the "bubble chamber" of the 1980s and 1990s as discussed by the authors, which can not only reconstruct the trajectories of charged particles in 3D space, but also identify particles by measuring the ionization energy that they deposit along their tracks.
Journal ArticleDOI
Zigzag-shaped pads for cathode readout of a time projection chamber
TL;DR: In this paper, large zigzag-shaped pads for the cathode readout of a TPC were introduced to reduce the number of channels of readout electronics without degrading the spatial resolution.