Some numbers from Alba

Yesterday, I've placed some numbers in the post and I think there are other important numbers on this facility.

From the operation calendar, some numbers can be extracted. The synchrotron will be running 5184h (60% of the year time).

Well this is more the number of hours that can be running, because the 27% of this time (1416h, 16% of the year) are machine studies and accelerator test. This means that during this time is not necessary that we have beam in the storage.

For the users, it's plan that we will deliver 3768 beam hour. This represent the 72% of the available running time (or the 43% of the year time).

The rest of the year is dedicated to maintenance and improvements (984h, 11% of the total) and warm-up (2432h, 27.7%). There are special time slots dedicates to the Personal Safety System (64h, 0.7%) and the CSN (spanish acronym of the Nuclear Security Council).

This give a total amount of 8760h (365 days).

More numbers?

The storage ring has a perimeter of about 270m, designed to have an energy of 3GeV and the accumulated current at 400mA. In this circumference there are:

• 32 bending magnets that generates a magnetic field up to 1.42T each and a magnetic gradient (G) of 5.5T/m.
• 112 quadrupoles
• 120 sextupoles with B=1.12T
• Those sextupoles have additional coils to apply corrector dipole field.

The booster ring has a perimeter of about 250m, and is the propeller phase that accelerates the electron beam from 100MeV to the 3GeV that has to be given to the storage ring. In this circumference there are:

• 40 bending magnets with a B=0.89 T, and G=2.2T/m
• 60 quadrupoles
• 16 sextupoles 
• 72 correctors

In total we have more than 700 magnets:

More numbers? There are many more fields where numbers can be written here. This may starts a series of articles.

Update 20130228: Summary:

Off	984h	11%
Warm-up	2432h	27.3%
Beamtime	5184h	60%	Machine	1416h	27% (16% of the year)
			Beamlines	3768h	72% (43% of the year)
CSN	96h	1%
PSS	64h	0.7%
Total	8760h