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Sunday, July 12, 2020 | History

2 edition of Development of a scanning and measuring machine for bubble chamber track analysis. found in the catalog.

Development of a scanning and measuring machine for bubble chamber track analysis.

Peter David Wraight

Development of a scanning and measuring machine for bubble chamber track analysis.

by Peter David Wraight

  • 81 Want to read
  • 36 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D.)-Univ. of Birmingham, Dept of Physics.

ID Numbers
Open LibraryOL19886863M

calibrating the PWC 's relative to the bubble chamber. One roll was lost at Cincinnati airport. The rest, K pictures in 37 rolls, was used in this analysis. Overview of Data Acquisition Fig. 2 is a schematic diagram for the major links in the data processing chain. We start with bubble chamber . The measuring principle of longitudinal level irregularity of the CP-3 type track inspection car is inertial measurement method, which means the train speed has much influence on the measuring result.

analysis of bubble chamber pictures using computers and track-following projection microscopes. At the time this seemed like a formidable under-taking; Berkeley's first digital comput-er, an IBM , had just been ordered, and the first bubble-chamber-film mea-suring machine was still being de-signed. An immensely productive era be-gan.   The bubble chamber, which was invented by Donald Glaser in , made its major contributions to particle physics over three decades, from the late s until the s. This period saw chambers of increasing size, particle beams of increasing energy, more and more automatic measuring machines, and increasingly powerful computers. The initial era was .

@article{osti_, title = {DESIGN OF A PATTERN RECOGNITION DIGITAL COMPUTER WITH APPLICATION TO THE AUTOMATIC SCANNING OF BUBBLE CHAMBER NEGATIVES}, author = {McCormick, B.H. and Narasimhan, R.}, abstractNote = {The overall computer system contains three main parts: an input device, a pattern recognition unit (PRU), and a control . A type of precision measuring instrument, a flying spot digitizer, for the analysis of bubble chamber data is described. When the flying spot encounters a bubble image, it is attenuated typically 25 to 75% depending on the directness of hit and the bubble chamber photographic and operating parameters.


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Development of a scanning and measuring machine for bubble chamber track analysis by Peter David Wraight Download PDF EPUB FB2

Because of its dual function it is labelled the SMP (scanning-measuring projector). During the summer ofSnyder studied the design of the machine and recommended its use in a data analysis system in which the scanning and measuring machine would be connected directly on to a high speed digital computer2).Cited by: 2.

THE DEVELOPMENT OF DATA ANALYSIS SYSTEMS it is hoped that 5will be obtainable with bubble chamber tracks. The precision encoding mode is under development and it is hoped to make the first tests on bubble chamber film early in Cited by: 5.

Use of the system with film from the FNAL 15 ft bubble chamber is described. Introduction We have built a microprocessor-based system to control the scanning and image-plane digitizing (IPD) of bubble chamber film.

It allows physicists to program scanning instructions and on-line consistency checks in the high level language, PL/ by: 1. The construction and performance of the scanning and measuring machine HOLMES are described. It has been used to analyse in-line holograms taken with the small bubble chamber HOBC.

A total of holograms has up to now been analysed on by: 5. The automatic measurement of film from a bubble chamber equipped with a track sensitive target is described. The methods of track filtering and reconstruction are outlined. The track fit starts out with the measurements of one set as given by the track finder and uses this information to provide an estimate of a set of parameters describing each track.

Track finding in early bubble chamber experiments was done in a purely manual way. The events were inspected on a scanning table, and machines measuring bubble positions on the event Cited by: 5. The sequence of the scanning of the detector heads will thus be: first scan, lines 1,61,; second scan, lines 2,62, and so on.

The spacing of scan lines is 32 um on the film, and the film to image magnification is 1, thus the spacing of detectors is 25 x 60 lines x 32 bm = 48 mm. Track reconstruction is traditionally divided into two separate parts: track finding or pattern recognition track fitting (estimation of track parameters) Track finding in early bubble chamber experiments was done in a purely manual way: events were inspected on a scanning table machines measuring bubble positions on the event image.

The bubble chamber is placed in a magnetic field. The camera locations and direction of the magnetic field can be seen from Figures 1 and 2. All dimensions are approximate. As is evident from Figure 2, the beam tracks, which are made by negative pions, will curve Size: KB. A digitised projection microscope used for bubble chamber film measurement has a precision digital servo system to control the stage movements.

The servo. A LSD (or Spiral Reader) measuring machine which receives film previously scanned on Shivamatic scanning tables. An operator is involved in the measurement process to set the machine on the vertex of the event to be measured.

A slit, moving in a spiral, then searches the film and sends track information to a computer. Abstract. During the late s and s, bubble chambers buried physicists. At first thousands, soon tens of thousands, then hundreds of thousands, and at last millions of photographs issued from the cameras at the massive chambers of the largest particle physics laboratories in the world: Lawrence Radiation Laboratory (LRL), Cited by: 1.

Pattern Recognition In Bubble Chambers Pattern Recognition In Bubble Chambers White, Howard S. Howard S. White Lawrence Lawrence Radiation Laboratory Berkeley, Berkeley, California is The bubble The bubble chamber is one of the most tools versatile tools for high energy physics It is used to research.

It is used to detect the passage. European Bubble Chamber (BEBC). A SAAB scanning table, designed to cope with the special fi lm from the heavy liquid bubble chamber, Gargamelle. The chamber volume is covered by separate cameras and separate images can be projected.

Measurement is carried out online with a computer. Compiler’s Note A la recherche du temps perdu. Professor Ian Simpson Hughes bubble chamber, a new type of detector which had begun to open up new horizons for the study of the fundamental particles of nature.

In the bubble chamber technique, large numbers of sets of three air conditioned room) as well as several scanning machines. Early experiments were to involve the analysis. CHAPTER 1 BUBBLE CHAMBER FILM ANALYSIS 1 Current Experiments 1 The CERN 2m Bubble Chamber 2 The Photographic System 3 The Bubble Chamber Cycle 4 A Typical Bubble Chamber Picture 5 Scanning 7 Measuring 7 THRESH and GRIND 9 CHAPTER 2 THE OFF-LINE MEASURING SYSTEM 11 The Measuring Machines The major responsibilities of the Applied Physics Division are Bubble Chamber operation and development.

track analysis measuring machines. computer facilities. the Variable Energy Cyclotron for AERE. Superconducting magnets and the. An account is given of the reduction and analysis of data from bubble chambers. Initially, the principles of operation and the important advances in the bubble chamber Author: Are Strandlie.

The Track Analysis Maintenance Section of Engineering Division is now responsible for all the machines used in the measurement of bubble and spark chamber film. An additional 11 machines (of 3 different types) used for spark chamber films have been taken over for maintenance and for the incorporation of new digitizing systems.

You will not need the training for measuring, as opposed to scanning, since you will be doing only the latter, but this information will give you a clearer idea of what was really happening in the chamber.

The physical parameters of the in bubble chamber are given in the appendices to this write-up. III. Experiment Size: KB. They came up with the idea of what was initially called IEP-X and later became the HPD. Inthey developed and presented the basis of a technique for the automatic exploration of photographs under on-line computer control.

This method allows faster measurement and analysis of bubble chamber photographs.SAP - An IBM Program for the special analysis of bubble chamber events following GAP kinematics, DD/EXP/62/26, R. Bock, VI.G. Moorhead and Powell Analysis of Track Chamber Film with HPD (provisional) DD/EXP/62/27, H.

Schneider FORTRAN SUBROUTINE PLOT, DD/EXP/62/29, 7/.G. Moorhead.HOLMES is a working prototype of a scanning and measuring machine for in-line holograms of HOBC heavy liquid bubble chamber events.

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