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PIF Beam Specifications

For testing with proton beams at both high and low energy, TRIUMF offers two standard configurations. The Back location is typically used for most irradiations, but a Front location is available for higher intensities, though over a smaller area. Specifications are given in the table below.

Extracted-beam energy changes are performed by the Cyclotron operators in the Main Control room and are usually accomplished in under 30 minutes. Degrader changes are done remotely by the user.

The beam intensity is monitored by an air ion chamber which has been calibrated against plastic scintillators or a miniature calibrated ion chamber.  Beam profiles are monitored by an integrating multiwire chamber and there are dedicated electronics and data displays in the Control Area.

 

BL1B protonsBL2C protons
Energy

355 or 480 MeV (480 MeV preferred)

Some other energies with a Degrader

65 to 115 MeV

5 to 65 MeV with a Degrader

 Initial Intensity0.1 to 3 nA0.1 to 7 nA
 Flux (protons/cm2/s)

Back location:  105 to 4x107 (102 possible)

Front location:  7x108 max

Back location:  105 to 1x108 (102 possible)

Front location:  2x109 max

 Spot Size

Back location:  2x2 cm to 7.5x7.5 cm

Front location:  1 to 2 cm diameter

Back location:  1 to 7.5 cm diameter

Front location:  0.5 to 2 cm diameter

Spot Homogeneity

Back location:  +/- 5%

Front location:  +/- 10%

Back location:  +/- 5%

Front location:  +/- 10%

Dose Rate

Back location:  10 to 20 mGy/s (1 to 2 rads/s)

Front location:  up to 500 mGy/s (50 rads/s)

Back location:  50 to 100 mGy/s (5 to 10 rads/s)

Front location:  up to 1000 mGy/s (100 rads/s)

Beam Counting and Monitoring System

Ion Chamber or Scintillator

Ion Chamber, Scintillator, or Faraday Cup
Device-Positioning System

Remote-controlled X-Y platform with laser alignment

Remote-controlled X-Y platform with laser alignment
Access Conditions

20 m cable length to Control Area

20 m cable length to Control Area