Fermilab Linac

The Fermilab Linac is a H- (negative hydrogen ion), 400 MeV particle accelerator. It provides beam for Booster operation at frequencies from 0.1 to 8 Hz. It is also capable of providing 66MeV beam to the Fermilab Neutron Therapy Facility (NTF).

The Fermilab Linac contains the following parts:

  • A 35 KeV H- ion source.
  • A 750 KeV RIL (RFQ Injection Line, including a Low & Medium Energy Beam Transport)
  • A 116 MeV Drift-Tube (Alverez) Linac operating at 201.25MHz
  • A 401 MeV Side-Coupled Cavity Linac operating at 805MHz.

Many details can be obtained from the picture displays listed in the sidebar to the left.

Linac Performance Plots

Linac Beam Current

Latest Linac beam current

Linac beam current over the last 24 hours (updated every 10 minutes, beginning at :02).

Linac beam lasts between 15 and 50 &mu sec, and repeats at 15 Hz, for a duty factor between 0.0225% and 0.0750%. Zero current usually means that we are not being asked to produce beam for the rest of the facility.

Ion Source Beam Current

Ion source beam current

Oscilloscope Plot (updated every 15 minutes, beginning at :01).

Linac Efficiency

Weekly Transmission

This is the transmission through Linac over the last week

Pulses Per Day

Number beam pulses

This is the number of beam pulses delivered by the Linac each day for the last 120 days

Linac Beam Velocity

Beam velocity plot

This is the Linac beam velocity changes over the last 2 days

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Security, Privacy, Legal