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Showing papers by "Barry Blumenfeld published in 1983"

Journal Article•DOI•
Spatial Resolution of the PEP-4 Time Projection Chamber

[...]

Hiroaki Aihara1, M. Alston-Garnjost2, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri2, A. V. Barnes2, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross2, C. D. Buchanan4, W. C. Carithers2, O. Chamberlain2, J. Chiba1, C.Y. Chien3, Allan G Clark2, O. I. Dahl2, C. T. Day2, P. Delpierre2, K. A. Derby2, P. H. Eberhard2, D. L. Fancher2, H. Fujii1, T. Fujii1, B. Gabioud2, J. W. Gary2, W. Gorn5, N. J. Hadley2, J. M. Hauptman4, B. Heck2, H. Hilke2, J. E. Huth2, J. Hylen3, H. Iwasaki1, T. Kamae1, R. W. Kenney2, L. T. Kerth2, R. I. Koda4, R. R. Kofler6, K. K. Kwong5, J. G. Layter5, C. S. Lindsey5, S. C. Loken2, X-Q. Lu3, G. R. Lynch2, L. Madansky3, R. J. Madaras2, R. Majka2, J. Mallet2, P. S. Martin2, K. Maruyama1, J. N. Marx2, J. A. J. Matthews3, S. O. Melnikoff5, W. Moses2, P. Nemethy2, D. R. Nygren2, P. J. Oddone2, D. A. Park4, A. Pevsner3, M. Pripstein2, P. R. Robrish2, M. T. Ronan2, R. R. Ross2, F. R. Rouse2, G. Shapiro2, M. D. Shapiro2, B. C. Shen5, W. E. Slater4, M. L. Stevenson2, D. H. Stork4, H. K. Ticho4, N. Toge1, M. Urban2, G. J. Van Dalen5, R. van Tyen2, H. Videau2, Mitchell Wayne4, W. A. Wenzel2, R. F. vanDaalen Wetters4, M. Yamauchi1, M. E. Zeller6, W-M. Zhang3, Ronald Madaras2 •
University of Tokyo1, University of California, Berkeley2, Johns Hopkins University3, University of California, Los Angeles4, University of California, Riverside5, Yale University6
01 Feb 1983-IEEE Transactions on Nuclear Science
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.
Abstract: 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. The dependence of the spatial resolution and pad response on drift distance and track-anode crossing angle is presented.

28 citations

Journal Article•DOI•
Measurement of Ionization Loss in the Relativistic Rise Region with the Time Projection Chamber

[...]

Bernard Gabioud1, Hiroaki Aihara2, M. Alston-Garnjost1, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri1, A. V. Barnes1, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross1, C. D. Buchanan4, W. C. Carithers1, O. Chamberlain1, J. Chiba2, C.Y. Chien3, A. R. Clark1, O. I. Dahl1, C. T. Day1, P. Delpierre1, K. A. Derby1, P. H. Eberhard1, D. L. Fancher1, H. Fujii2, T. Fujii2, B. Gabioud1, J. W. Gary1, W. Gorn5, N. J. Hadley1, J. M. Hauptman4, B. Heck1, H. Hilke1, J. E. Huth1, J. Hylen3, H. Iwasaki2, T. Kamae2, R. W. Kenney1, L. T. Kerth1, R. I. Koda4, R. R. Kofler6, K. K. Kwong5, J. G. Layter5, C. S. Lindsey5, S. C. Loken1, X-Q. Lu3, G. R. Lynch1, L. Madansky3, Ronald Madaras1, R. Majka1, J. Mallet1, P. S. Martin1, K. Maruyama2, J. N. Marx1, J. A. J. Matthews3, S. O. Melnikoff5, W. Moses1, P. Nemethy1, D. R. Nygren1, P. J. Oddone1, D. A. Park4, A. Pevsner3, M. Pripstein1, P. R. Robrish1, M. T. Ronan1, R. R. Ross1, F. R. Rouse1, G. Shapiro1, M. D. Shapiro1, B. C. Shen5, W. E. Slater4, M. L. Stevenson1, D. H. Stork4, H. K. Ticho4, N. Toge2, M. Urban1, G. J. Van Dalen5, R. van Tyen1, H. Videau1, Mitchell Wayne4, W. A. Wenzel1, R. F. vanDaalen Wetters4, M. Yamauchi2, M. E. Zeller6, W-M. Zhang3 •
University of California, Berkeley1, University of Tokyo2, Johns Hopkins University3, University of California, Los Angeles4, University of California, Riverside5, Yale University6
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: In this paper, the results obtained with the LBL Time Projection Chamber (TPC) regarding the particle identification by the measurement of the ionization losses in the relativistic rise region were presented.
Abstract: We present here some results obtained with the LBL Time Projection Chamber (TPC) regarding the particle identification by the measurement of the ionization losses in the relativistic rise region. This includes the method of calibration using 55Fe sources, the measurement of the resolution using cosmic rays, which shows an equivalent K-? separation of 4.8 standard deviations at 3.5 GeV/c, and the preliminary results obtained with multihadronic events from e+e- annihilations.

13 citations

Journal Article•
Measurement of ionization loss in the relativistic rise region with the time projection chamber - the PEP-4 TPC collaboration

[...]

Hiroaki Aihara, M. Alston-Garnjost, D. H. Badtke, J. A. Bakken, A. Barbaro-Galtieri, A.V. Barnes, B. A. Barnett, Barry Blumenfeld 
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: In this article, the LBL Time Projection Chamber is used for particle identification by the measurement of the ionization losses in the relativistic rise region, which shows an equivalent K-pi.. separation of 4.8 standard deviations at 3.5 GeV/c, and preliminary results obtained with multihadronic events from e/sub +/e/sub -/ annihilations.
Abstract: The authors present here some results obtained with the LBL Time Projection Chamber regarding the particle identification by the measurement of the ionization losses in the relativistic rise region. This includes the method of calibration using /sup 55/Fe sources, the measurement of the resolution using cosmic rays, which shows an equivalent K-..pi.. separation of 4.8 standard deviations at 3.5 GeV/c, and the preliminary results obtained with multihadronic events from e/sub +/e/sub -/ annihilations.

13 citations

Journal Article•DOI•
Geiger Mode Calorimeter for PEP-4

[...]

Hiroaki Aihara1, M. Alston-Garnjost2, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri2, A. V. Barnes2, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross2, C. D. Buchanan4, W. C. Carithers2, O. Chamberlain2, J. Chiba1, C.Y. Chien3, Allan G Clark2, O. I. Dahl2, C. T. Day2, P. Delpierre2, K. A. Derby2, P. H. Eberhard2, D. L. Fancher2, H. Fujii1, T. Fujii1, B. Gabioud2, J. W. Gary2, W. Gorn5, N. J. Hadley2, J. M. Hauptman4, B. Heck2, H. Hilke2, J. E. Huth2, J. Hylen3, H. Iwasaki2, T. Kamae1, R. W. Kenney2, L. T. Kerth2, R. I. Koda4, R. R. Kofler6, K. K. Kwong5, J. G. Layter5, C. S. Lindsey5, S. C. Loken2, X-Q. Lu3, G. R. Lynch2, L. Madansky3, R. J. Madaras2, R. Majka2, J. Mallet2, P. S. Martin2, K. Maruyama1, J. N. Marx2, J. A. J. Matthews3, S. O. Melnikoff5, W. Moses2, P. Nemethy2, D. R. Nygren2, P. J. Oddonel2, D. A. Park2, A. Pevsner3, M. Pripstein2, P. R. Robrish2, M. T. Ronan2, R. R. Ross2, F. R. Rouse2, G. Shapiro2, M. D. Shapiro2, B. C. Shen5, W. E. Slater4, M. L. Stevenson2, D. H. Stork4, H. K. Ticho4, N. Toge1, M. Urban2, G. J. Van Dalen5, R. van Tyen2, H. Videau2, Mitchell Wayne4, W. A. Wenzel2, R. F. vanDaalen Wetters4, M. Yamauchi1, M. E. Zeller6, W-M. Zhang3 •
University of Tokyo1, University of California, Berkeley2, Johns Hopkins University3, University of California, Los Angeles4, University of California, Riverside5, Yale University6
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: The PEP-4 hexagonal barrel calorimeter, with lead-laminate layers and 5×lOmm2 Geiger-mode discharge cells, has demonstrated excellent stability and uniformity in operation.
Abstract: The PEP-4 hexagonal barrel calorimeter, with lead-laminate layers and 5×lOmm2 Geiger-mode discharge cells, has demonstrated excellent stability and uniformity in operation. The use of projective geometry in half degree-wide cathode strips at ±60 degrees to the sense wire channels provides excellent spatial resolution and reconstruction capability. The electronic noise-to-signal ratio without preamplification is sufficiently low that individual 50 pC Geiger discharges are accurately measured and used for energy calibration. Measurements made at 14.5 GeV e± beam energy have provided preliminary spectra of Bhabhas and of photon-photon invariant mass. The latter show that ?o's can be reconstructed.

8 citations

Journal Article•DOI•
Performance of the hexagonal calorimeter at PEP-4☆

[...]

Hiroaki Aihara1, M. Alston-Garnjost2, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri2, A. V. Barnes2, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross2, C. D. Buchanan4, William Carithers2, O. Chamberlain2, J. Chiba1, C.Y. Chien3, A. R. Clark2, O. I. Dahl2, C. T. Day2, P. Delpierre2, K. A. Derby2, P. H. Eberhard2, D. L. Fancher2, H. Fujii1, B. Gabioud2, J. W. Gary2, W. Gorn5, N. J. Hadley2, J. M. Hauptman4, B. Heck2, H. J. Hilke2, Werner Hofmann2, J. E. Huth2, J. Hylen3, H. Iwasaki2, T. Kamae1, R. W. Kenney2, L. T. Kerth2, R. I. Koda4, R. R. Kofler6, K. K. Kwong5, J. G. Layter5, C. S. Lindsey5, S. C. Loken2, G. W. London2, X. Q. Lu3, G. R. Lynch2, L. Madansky3, R. J. Madaras2, R. M. Majka2, J. Mallet2, P. S. Martin2, K. Maruyama1, J. N. Marx2, J. A. J. Matthews3, S. O. Melnikoff5, W. Moses2, P. Nemethy2, D. R. Nygren2, P. J. Oddone2, D. A. Park4, A. Pevsner3, M. Pripstein2, P. R. Robrish2, M. T. Ronan2, R. R. Ross2, F. R. Rouse2, G. Shapiro2, M. D. Shapiro2, B. C. Shen5, W. E. Slater4, M. L. Stevenson2, D. H. Stork4, H. K. Ticho4, N. Toge4, M. Urban2, G. J. Van Dalen5, R. van Tyen2, H. Videau2, Mitchell Wayne4, W. A. Wenzel2, R. F. van Daalen Wetters4, M. Yamauchi1, M. E. Zeller6, W. M. Zhang3 •
University of Tokyo1, Lawrence Berkeley National Laboratory2, Johns Hopkins University3, University of California, Los Angeles4, University of California, Riverside5, Yale University6
15 Nov 1983-Nuclear Instruments and Methods in Physics Research
TL;DR: In this article, a Geiger-mode electromagnetic shower calorimeter has been constructed for PEP-4, which consists of six trapezoidal modules covering 75% of 4 π solid angle in a hexagonal array.

7 citations

Journal Article•DOI•
Performance of a Drift Chamber System for the Time Projection Chamber Detector Facility at PEP

[...]

Hiroaki Aihara1, M. Alston-Garnjost2, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri2, A. V. Barnes2, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross2, C. D. Buchanan4, W. C. Carithers2, O. Chamberlain2, J. Chiba1, C.Y. Chien3, Allan G Clark2, Orin I. Dahl2, C. T. Day2, K. A. Derby2, P. Delpierre2, P. H. Eberhard2, D. L. Fancher2, Hirotsugu Fujii1, T. Ftjii1, B. Gabioud2, J. W. Gary2, W. Gorn5, B. Heck2, N. J. Hadley2, J. M. Hauptman4, H-J. Hilke2, J. E. Huth2, J. Hylen3, H. Iwasaki1, T. Kamae1, R. W. Kenney2, L. T. Kerth2, R. I. Koda4, R. R. Kofler6, K. K. Kwong5, J. G. Layter5, C. S. Lindsey5, S. C. Loken2, X-Q. Lu3, G. Lynch2, L. Madansky3, R. J. Madaras2, R. Majka2, J. Mallet2, P. S. Martin2, K. Maruyama1, J. N. Marx2, J. A. J. Matthews3, S. O. Melnikoff5, W. Moses2, P. Nemethy2, D. R. Nygren2, P. J. Oddone2, D. A. Park4, A. Pevsner3, M. Pripstein2, P. R. Robrish2, M. T. Ronan2, Ronald R. Ross2, F. R. Rouse2, G. Shapiro2, Marjorie Shapiro2, B. C. Shen5, W. E. Slater4, M. L. Stevenson2, D. H. Stork4, H. K. Ticho4, N. Toge1, G. J. Van Dalen5, R. van Tyen2, M. Urban2, H. Videau2, Mitchell Wayne4, William A. Wenzel2, R. F. vanDaalen Wetters4, M. Yamauchi1, M. E. Zeller6, W-M. Zhang3, Clark S. Lindsey •
University of Tokyo1, University of California, Berkeley2, Johns Hopkins University3, University of California, Los Angeles4, University of California, Riverside5, Yale University6
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: In this paper, two cylindrical drift chambers have been designed and constructed to trigger the Time Projection Chamber and to assist in tracking and momentum reconstruction, with data collected from cosmic rays and actual e+e-collisions during recent experimental runs.
Abstract: A svstem of two cylindrical drift chambers has been designed and constructed to trigger the Time Projection Chamber and to assist in tracking and momentum reconstruction. Performance of these chambers has been studied with data collected from cosmic rays and actual e+e-collisions during recent experimental runs.

7 citations

Journal Article•DOI•
Performance of the Signal Processing System for the Time Projection Chamber

[...]

Stewart C. Loken1, Hiroaki Aihara2, M. Alston-Garnjost1, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri1, A. V. Barnes1, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross1, C. D. Buchanan4, W. C. Carithers1, O. Chamberlain1, J. Chiba2, C.Y. Chien3, Allan G Clark1, O. I. Dahl1, C. T. Day1, P. Delpierre1, K. A. Derby1, P. H. Eberhard1, D. L. Fancher1, H. Fujii2, T. Fujii2, B. Gabioud1, J. W. Gary1, W. Gorn5, N. J. Hadley1, J. M. Hauptman4, B. Heck1, H. Hilke1, J. E. Huth1, J. Hylen3, H. Iwasaki1, T. Kamae2, R. W. Kenney1, L. T. Kerth1, R. I. Koda4, R. R. Kofler6, K. K. Kwong5, J. G. Layter5, C. S. Lindsey5, S. C. Loken1, X-Q. Lu3, G. R. Lynch1, L. Madansky3, R. J. Madaras1, R. Majka1, J. Mallet1, P. S. Martin1, K. Maruyama2, J. N. Marx1, J. A. J. Matthews3, S. O. Melnikoff5, W. Moses1, P. Nemethy1, D. R. Nygren1, P. J. Oddone1, D. A. Park4, A. Pevsner3, M. Pripstein1, P. R. Robrish1, M. T. Ronan1, R. R. Ross1, F. R. Rouse1, G. Shapiro1, M. D. Shapiro1, B. C. Shen5, W. E. Slater4, M. L. Stevenson1, D. H. Stork4, H. K. Ticho4, N. Toge2, M. Urban1, G. J. Van Dalen5, R. van Tyen1, H. Videau1, Mitchell Wayne4, W. A. Wenzel1, R. F. vanDaalen Wetters4, M. Yamauchi2, M. E. Zeller6, W-M. Zhang3 •
University of California, Berkeley1, University of Tokyo2, Johns Hopkins University3, University of California, Los Angeles4, University of California, Riverside5, Yale University6
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: The Time Projection Chamber has operated in the PEP colliding beams at SLAC since January 1982 as mentioned in this paper and has been calibrated and monitored using a computer-controlled test pulser system.
Abstract: The Time Projection Chamber has operated in the PEP colliding beams at SLAC since January 1982. Its signal processing system, containing 16020 channels, has been calibrated and monitored using a computer-controlled test pulser system. We describe the test system and review measurements made with the system of signal processing electronics.

5 citations

Journal Article•DOI•
A Muon Detection System for the PEP4 Facility

[...]

Hiroaki Aihara1, M. Alston-Garnjost2, D. H. Badtke3, J. A. Bakken3, A. Barbaro-Galtieri2, A. V. Barnes2, B. A. Barnett3, Barry Blumenfeld3, A. D. Bross2, C. D. Buchanan, W. C. Carithers2, O. Chamberlain2, J. Chiba1, C.Y. Chien3, Allan G Clark2, Orin I. Dahl2, C. T. Day2, P. Delpiee2, K. A. Derby2, P. H. Eberhard2, D. L. Fancher2, Hirotsugu Fujii1, T. Fujii1, B. Gabioud2, J. W. Gary2, W. Gorn4, N. J. Hadley2, J. M. Hauptman, B. Heck2, H. Hilke2, J. E. Huth2, J. Hylen3, H. Iwasaki1, T. Kamae1, R. W. Kenney2, L. T. Kerth2, R. I. Koda, R. R. Kofler5, K. K. Kwong4, J. G. Layter4, C. S. Lindsey4, S. C. Loken2, X-Q. Lu3, G. Lynch2, L. Madansky3, R. J. Madaras2, R. Majka2, J. Mallet, P. S. Martin2, K. Maruyama1, J. N. Marx2, J. A. J. Matthews3, S. O. Melnikoff4, W. Moses2, P. Nemethy2, D. R. Nygren2, P. J. Oddone2, D. A. Park, A. Pevsner3, M. Pripstein2, P. R. Robrish2, M. T. Ronan2, Ronald R. Ross2, F. R. Rouse2, G. Shapiro2, Marjorie Shapiro2, B. C. Shen4, W. E. Slater, W. J. Spangler3, M. L. Stevenson2, D. H. Stork, H. K. Ticho, N. Toge1, G. J. Van Dalen4, R. van Tyen2, H. Videau2, Mitchell Wayne, William A. Wenzel2, R. F. vanDaalen Wetters, M. Yamauchi1, M. E. Zeller5, W-M. Zhang3 •
University of Tokyo1, University of California, Berkeley2, Johns Hopkins University3, University of California, Riverside4, Yale University5
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: A.H. Aiharae, M.D. Alston-GarnjostG, D.A. BarbaroGaltieria, A.T. Day', P.J. Derby, R.R. Van Dalen', R.E. Pripstein, and W-M.
Abstract: A large muon detection system has been constructed and is fully operational in the PEP 4 facility. It is more than 99.6% efficient. The system is rugged and reliable. It is possible to verify the integrity of all the chambers in a few minutes. Associated software for identifying muons has been written and is working.

5 citations

Journal Article•
Performance of the signal processing system for the time projection chamber - The PEP-4 TPC collaboration

[...]

Hiroaki Aihara, M. Alston-Garnjost, D. H. Badtke, J. A. Bakken, A. Barbaro-Galtieri, A.V. Barnes, B. A. Barnett, Barry Blumenfeld 
01 Feb 1983-IEEE Transactions on Nuclear Science
TL;DR: The Time Projection Chamber has operated in the PEP colliding beams at SLAC since January 1982 and has been calibrated and monitored using a computer controlled test pulser system.
Abstract: The Time Projection Chamber has operated in the PEP colliding beams at SLAC since January 1982. Its signal processing system, containing 16020 channels, has been calibrated and monitored using a computer controlled test pulser system. The authors describe the test system and review measurements made with the system of signal processing electronics.

4 citations