Progress report on coatings for SPS-U
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Progress report on coatings for SPS-U S.Calatroni, P.Chiggiato, P.Costa Pinto, M.Taborelli, I.Wevers, C.Yin Vallgren, H.Pedroso-Marques, W. Vollenberg Status of liner coatings •Testing programme •Proposal for installation Status of SPS dipoles coating bench SPS-U 27.1.2009 1 Sergio Calatroni
description
Progress report on coatings for SPS-U. Status of liner coatings Testing programme Proposal for installation Status of SPS dipoles coating bench. S.Calatroni , P.Chiggiato , P.Costa Pinto, M.Taborelli , I.Wevers , C.Yin Vallgren, H.Pedroso -Marques, W. Vollenberg. - PowerPoint PPT Presentation
Transcript of Progress report on coatings for SPS-U
Sergio Calatroni 1
Progress report on coatings for SPS-U
S.Calatroni, P.Chiggiato, P.Costa Pinto, M.Taborelli, I.Wevers,C.Yin Vallgren, H.Pedroso-Marques, W. Vollenberg
Status of liner coatings•Testing programme•Proposal for installation
Status of SPS dipoles coating bench
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Liner status – lab testing
• SPS test with liners:– Old 2008 liner with carbon coating, exposed to air
during shutdown– Stainless steel liner for reference– New liner with rough carbon coating (zirconium
underlayer)– A new slot is available. Proposal (to be discussed):
carbon coating on getter underlayer
• Sample in C-magnet:– New sample holder being prepared
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0 200 400 600 800 1000 1200 1400 1600 1800 20000.600000000000001
0.700000000000001
0.800000000000001
0.900000000000001
1
1.1
1.2
Ageing of a-C film on SS samples, one curve each sample, on var-ious zirconium underlayers
CNe30_2_20090116_SS_1CNe30_3_20090116_SS_1CNe30_4_20090116_SS_1CNe30_5_20090116_SS_1CNe30_2_20090123_SS_1CNe30_3_20090123_SS_1CNe30_4_20090123_SS_1CNe30_5_20090123_SS_1
Energy/eV
SEY
Aged one week
Work is in progress, we have to understand some issues
related to a-C layer uniformity and coating temperature
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Test on dual magnetron system, bldg 101
C source Ti source
samples
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Ageing with Ti underlayer (getter for H2)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0 500 1000 1500 2000
SE
Y
energy
CAr_p2_20081017_1CAr_p2_20081017_2CAr_p2_20081017_3Car_p2_20081209_1
CAr_p2_20081209_on Cu
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0 500 1000 1500 2000
SE
Y
energy
CAr_p7_20090126_1CAr_p7_20090109_2CAr_p7_2000109_3Car_p7_20090126_1Car_p7_20090126_2
CAr_p7_20090126_on Cu
7 weeks in air
3 weeks in airstandard
Ti underlayer
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0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
0 200 400 600 800 1000 1200 1400 1600 1800 2000
SEY
Energy/eV
CAr_p9 samples after coating, after 4 days
CAr_p9_20090115_SS_1
CAr_p9_20090115_SS_2
CAr_p9_20090115_SS_3
Car_p9_20090119_SS_1
Car_p9_20090119_SS_2
Car_p9_20090119_SS_3
4 days in air
Continuous Ti underlayer
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Proposal for 4th liner
• Produce a NEG TiZrV underlayer on a liner
• Assemble it in C coating system, activate NEG to pump H2 and perform standard carbon coating
• Test samples in parallel
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MBB prototype test
MBB cross section;L=300mm;
2 rectangular carbon cathodes;Tested in LSS solenoids (B=190 Gauss)
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B field
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MBB prototype testMBB cross section; L=300mm;2 rectangular carbon cathodes;
Tested in LSS solenoids (B=190 Gauss)
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Cross section of the liner
L1L2 R1 R2Mid
Saved for agingSent to SEM for thickness measurement
δinitial onStSt L1 L2 Mid
CAr9 – MBB2 1.03 1.03 1.03 1.06
CAr10 – MBB3 0.977 0.999 0.998 0.997
CNe31 – MBB4 1.03
960 nm630 nm
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After 39 days in air: 1.07
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MBB coating bench in bldg. 867
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