Book contents
- Frontmatter
- Contents
- Preface to the second edition
- Preface to the first edition
- Introduction
- 1 Interactions of particles and radiation with matter
- 2 Characteristic properties of detectors
- 3 Units of radiation measurements and radiation sources
- 4 Accelerators
- 5 Main physical phenomena used for particle detection and basic counter types
- 6 Historical track detectors
- 7 Track detectors
- 8 Calorimetry
- 9 Particle identification
- 10 Neutrino detectors
- 11 Momentum measurement and muon detection
- 12 Ageing and radiation effects
- 13 Example of a general-purpose detector: Belle
- 14 Electronics
- 15 Data analysis
- 16 Applications of particle detectors outside particle physics
- Résumé
- 17 Glossary
- 18 Solutions
- Appendix 1 Table of fundamental physical constants
- Appendix 2 Definition and conversion of physical units
- Appendix 3 Properties of pure and composite materials
- Appendix 4 Monte Carlo event generators
- Appendix 5 Decay-level schemes
- Index
7 - Track detectors
Published online by Cambridge University Press: 19 October 2009
- Frontmatter
- Contents
- Preface to the second edition
- Preface to the first edition
- Introduction
- 1 Interactions of particles and radiation with matter
- 2 Characteristic properties of detectors
- 3 Units of radiation measurements and radiation sources
- 4 Accelerators
- 5 Main physical phenomena used for particle detection and basic counter types
- 6 Historical track detectors
- 7 Track detectors
- 8 Calorimetry
- 9 Particle identification
- 10 Neutrino detectors
- 11 Momentum measurement and muon detection
- 12 Ageing and radiation effects
- 13 Example of a general-purpose detector: Belle
- 14 Electronics
- 15 Data analysis
- 16 Applications of particle detectors outside particle physics
- Résumé
- 17 Glossary
- 18 Solutions
- Appendix 1 Table of fundamental physical constants
- Appendix 2 Definition and conversion of physical units
- Appendix 3 Properties of pure and composite materials
- Appendix 4 Monte Carlo event generators
- Appendix 5 Decay-level schemes
- Index
Summary
Some scientists find, or so it seems, that they get their best ideas when smoking; others by drinking coffee or whiskey. Thus there is no reason why I should not admit that some may get their ideas by observing or by repeating observations.
Karl R. PopperThe measurement of particle trajectories is a very important issue for any experiment in high energy physics. This provides information about the interaction point, the decay path of unstable particles, angular distributions and, when the particle travels in a magnetic field, its momentum. Track detectors, used intensively in particle physics up to the early seventies, have been described in Chap. 6.
A new epoch was opened by the invention of the multiwire proportional chamber [1, 2]. Now gaseous wire chambers and micropattern detectors almost play a dominant rôle in the class of track detectors.
The fast progress of semiconductor detectors has resulted in a growth of the number of high energy physics experiments using tracking systems based on semiconductor microstrip or pixel detectors, especially in areas where extremely high spatial accuracy is required.
Multiwire proportional chambers
A multiwire proportional chamber (MWPC) [1–4] is essentially a planar layer of proportional counters without separating walls (Fig. 7.1).
- Type
- Chapter
- Information
- Particle Detectors , pp. 186 - 229Publisher: Cambridge University PressPrint publication year: 2008