11.4 Particle Accelerators and Detectors

Linacs, cyclotrons, synchrotrons, and colliding-beam machines compared, layered subdetectors of a multipurpose experiment, and momentum from track curvature.

University Physics Volume 3, 11.4 Particle Accelerators and Detectors

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9 exercises

11.4 Exercise 1

How much energy does an electron receive in accelerating through a 1-V potential difference?

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11.4 Exercise 2

A charged particle of a certain momentum travels in an arc through a uniform magnetic field. What happens if the magnetic field is doubled?

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11.4 Exercise 3

Why is a symmetric collider “symmetric?”

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11.4 Exercise 5

Describe the basic components and function of a typical colliding beam machine.

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11.4 Exercise 7

What is the advantage of a colliding-beam accelerator over one that fires particles into a fixed target?

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11.4 Exercise 10

A proton track passes through a magnetic field with radius of 50 cm. The magnetic field strength is 1.5 T. What is the total energy of the proton?

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11.4 Exercise 12

Assume that beam energy of an electron-positron collider is approximately 4.73 GeV. What is the total mass (W) of a particle produced in the annihilation of an electron and positron in this collider? What meson might be produced?

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11.4 Exercise 14

Suppose a $W^{−}$ created in a particle detector lives for $5.00 \times 10^{−25} \text{s}$ . What distance does it move in this time if it is traveling at 0.900c? (Note that the time is longer than the given $W^{−}$ lifetime, which can be due to the statistical nature of decay or time dilation.)

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11.4 Exercise 16

The 3.20-km-long SLAC produces a beam of 50.0-GeV electrons. If there are 15,000 accelerating tubes, what average voltage must be across the gaps between them to achieve this energy?

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