Training Pool at the WaterCube - Open to Public?

I an planning to swim at the Training Pool at the WaterCube (NOT the waterpark, just the Training Pool).

Is it open to the public?
How much are the latest fees?
Are there lockers and showers available (free? or for a fee?)
What is the operating schedule for the public?
Do they only allow professional swimmers, or is it open to anyone who wants to swim laps?

Thank you.