src/primary.md

Primary beam and AVF cyclotron
==============================
\author HY

The primary beam for CRIB is provided by the AVF cyclotron of RIKEN:

 <http://www.nishina.riken.jp/facility/AVF.html>

The ion source can produce various kinds of ions (4He--40Ca have been used at the CRIB beamline). 

Typical beam energy accelerated at AVF is 3-10 MeV/u, and typical maximum beam current is 100 enA--a few e-microA.
 As these values depends on the ion, you should consult CNS members how much energy and beam current is actually available.

Available energy range
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The diagram shows the available energy range (horizontal axis...in MeV/u) of the AVF.
By recent improvements, the available energy could be higher
than this range. please consult us for the actual availability.

![Alt energy range diagram](../files/AVF_energy_plot_replot.png)

Questions:
 - *Which primary beam do you use?*
 - *How much current do you need?*