particle accelerator

1. P.RAMYA M Sc M Phil.,
ASSITANT PROFESSOR
BON SECOURS COLLEGE FOR WOMEN
THANJAVUR

2. CYCLOTRON OR MAGNETIC
RESONANCE ACCELERATOR

3. Introduction
• A cyclotron was one of the earliest particle accelerator.
• Invented by Ernest O. Lawrence in 1929- 1930
• It’s a device which is used to accelerates charged subatomic
particles in a constant magnetic field

4. Principle
• The charged particles acquire energy when they repeatedly
move through an alternating electric field along a spiral path.
• They move in a spiral path by a perpendicular magnetic
field.

5. Construction

6. • D shaped hollow semi-circular chambers, these are called
dees.
• This arrangement makes one dee positive and other negative
during one half cycle.
• An ion sources of positive ions, such as protons,deutrons,
alpha particles etc.
• A uniform magnetic field is applied perpendicular to the cross
sectional area of the dees placing them.

11. THANK YOU