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1 HIE-ISOLDE beam transfer lines magnets LIU-SPS beam loss review Magnets and power converters for beam scraping in LSS6 J. Bauche, G. Le Godec, 22 nd January 2013.
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HIE-ISOLDE beam transfer lines magnets
LIU-SPS beam loss review
Magnets and power converters for beam scraping in LSS6
J. Bauche, G. Le Godec, 22nd January 2013.
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HIE-ISOLDE beam transfer lines magnets
Part 1: MAGNETS
J. Bauche
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HIE-ISOLDE beam transfer lines magnetsLIU-SPS bumper specification parameters
(UPDATE January 2013)
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HIE-ISOLDE beam transfer lines magnetsSPS vertical bumpers situation
Strategy: manufacture 6 new bumpers for LIU and for spare consolidation Compatible MPLV / MPSV
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HIE-ISOLDE beam transfer lines magnetsIntegration on SSS girders
SSS 615
MPSV + VC = 860 mm
SSS 421
MPLV + VC = 920 mm
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Integration in half-cell 619 with TT60
61955
Bef
ore
LIU
-SP
SA
fter
LIU
-SP
S
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TT60 VC @ 61955
HIE-ISOLDE beam transfer lines magnetsPreliminary mechanical design
MPLVMPV New
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HIE-ISOLDE beam transfer lines magnetsPreliminary magnetic design
MPLV MPV New
1 T
1.75 T
1.35 T
1 T
1.62 T
1.33 T2D3D
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HIE-ISOLDE beam transfer lines magnetsSummary
None of the existing SPS bumper fulfills the new specifications for the LIU-SPS scraping scheme
Spare situation of SPS vertical bumpers is not ideal
Strategy: design new magnets compatible as spares for all SPS vertical bumpers• fulfill the needs for the LSS6 scraping scheme • secure the spare situation for the long term
Preliminary study shows realistic magnet design seems achievable
Design must now be optimized (field quality, saturation) and parameters matched to other interfaces, in particular power converters
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HIE-ISOLDE beam transfer lines magnets
Part 2: POWER CONVERTERS
G. Le Godec (slides presented by J. Bauche).
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Converter Technical proposal
Studies were made for two scenarios: Ref_1 and Ref_2,
Bipolar converters are requested (4 quadrant operation),
Ref_1 is the worst case (RMS value),
-1.5
-1
-0.5
0
0.5
1
1.5
0 1 2 3 4 5 6 7
Curr
ent (
pu)
Time (s)
SPS-Scraping / Ref_1 (pu)
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
0 1 2 3 4 5 6 7
Curr
ent (
pu)
Time (s)
SPS-Scraping / Ref_2 (pu)
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Modular approach and re-use of existing “bricks”: S250 family
o S500_s = +-240V/+-250A = 2xS250 in a serial configuration,o S250 used for LINAC3/LEIR/TT2/HiRadMat,
AuxPS familyo Type I = +-450V/+-450A,o Family used in the PS complex and for the LINAC4/PS-LIU/ELENA/TE-MSC test
benches in the future.
The technical proposal could be refined at a later stage, based on the final parameters of the new magnets: the modular approach provides some flexibility…
Circuit Nb of R per L per Imax
Magnet position Imatching I max P.C. Converter Origin Type Umax Irms Imax
Name magnets Magnet magnet Magnet requested Loc. type Conv. Conv. Conv.
in Series (20º C)
Projet Scraping
Projet Scraping
[mW] [mH] [A] [m] [A] [A] [V] [A] [A]
MPLV6150 1 94.5 112 400 6238 150 180 BA6 S500_s New SMPC 4Q 240 250 250
MPLV6170 1 94.5 112 400 6301 200 250 BA6 S500_s New SMPC 4Q 240 250 250
MPLV6190 1 94.5 112 400 6373 200 250 BA6 S500_s New SMPC 4Q 240 250 250
MPLV6210 1 94.5 112 400 6430 350 400 BA6 AuxPS LINAC4 SMPC 4Q 450 200 450
TE-EPC preliminary Proposal
Convertisseurs SPS-LIU-Scraping
Converter Technical proposal
Converter initial proposal, based on original MPLV design
