Carbon%20Coatings%20:

1

• Carbon Coatings
• Vacuum in MBB coated
• recovery of SEY by thermal treatment
• co-sputtering
• cleaning machine for magnets

M.Taborelli , for the SPSU team
2
SPS vac
22/04/09
3
SPS vac
SPS pressure readings 28/5/09
MBB
MBB
MBB
MBB51490
MBB
MBB
QD
P
P
51340
51540
P
4
SPS vac
24/5/09
5
a-C T
Recovery of aged a-C by thermal treatment in UHV
NB -the coating aged badly from the beginning
(1.35 after 1 month) -recovery is effective, but
aging upon re-exposure is fast
6
C-Cu
C-Cu co-sputtering
Increasing amount of Cu
7
C-Cu
XPS analysis -More oxygen when more Cu is
present -Cu is mostly in form of Cu , probably
hydroxide
-Try to reduce it to metallic Cu and see what
happens can be done thermally - From XPS it is
clear that the reduction works..and what happens
with SEY?
8
C-Cu
Co-sputtering Recovery of SEY by thermal