The injector chain

From hydrogen ions
to the Large Hadron Collider.

Five machines, working in precise relay. Click any stage on the map to inspect its beam state, energy, and purpose. Or press play and follow the proton in guided mode.

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Beam state

Particle type: H-
Approximate energy: 160 MeV (input stage)
Current machine: Linac 4
Beam profile: pulse

Transfer status: Manual selection. Hit Play mode for automatic stepping.

Stage 1 of 5

Linac 4

Linac 4 accelerates negative hydrogen ions, H-, with RF cavities up to about 160 MeV. It delivers short, pulsed packets that are prepared for a cleaner transfer into the PS Booster.

Scale
Compact linear chain with repeating RF cells

Open the full stage

The chain, in order

From hydrogen ionsto the Large Hadron Collider.

Beam state

Linac 4

Five stages, one proton.

From hydrogen ions
to the Large Hadron Collider.