SolidWorks, can I install the beta on a machine that does not have an existing SolidWorks license installed?

Or will installing the beta use up an activation on my existing serial number?

The sitiuation is this:

I have an office desktop as my main SW machine running 2012.

I have my laptop running the second activation running 2012.

I have just purchased a new home machine and want to install SW 2013 beta on that - more or less as a quarantine.

Wht options do I have?