LExan Bubble Chamber

The construction of the LExan Bubble Chamber, LEBC, was approved by the CERN Research Board on 16 November 1978.

A chamber is normally made by filling a large cylinder with a liquid heated to just below its boiling point.

Charged particles create an ionization track, around which the liquid vaporizes, forming microscopic bubbles.

Bubble density around a track is proportional to a particle's energy loss.

While for the NA16 experiment, LEBC was placed at the vertex position of the European Hybrid Spectrometer (EHS) that provided momentum analysis, particle identification and gamma detection for secondaries emerging from the hydrogen interactions.

LEBC2, the Lexan bubble chamber, which had a diameter of 20 cm and was made of transparent plastic.