LEP cryostat
Procurement strategy and plans
A. Vande Craen, C. Eymin, M. Moretti, D. Ramos
CERN
Internal review of IR2 LEP cryostats (WP11/WP5)– 17 May 2017
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Summary
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Introduction
Procurement strategy
Main components
Plans and Schedule
Conclusion
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Introduction
 LEP composed of > 250 different components
for a total of > 1800 pieces
 Ranging from standard screws to busbars not
forgetting large machined plates and pressure
vessel
 First unit to be assembled from November 2017
 Series assembled through 2018
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Procurement strategy and plans
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H-beam plates
 Specific
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Stainless steel 304L
Tight tolerances (flatness <= 0.2 mm/m)
Large dimensions
< 0.1 % cobalt content
 Procured through EN-MME
 Due to tight tolerances, will be manufactured in house
 Delivery of first unit Mid-October 2017
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Shuffling module
 Specific
 3 types
 Magnet side (identical for Type A and B)
 Type A, LEN side
 Type B, LEN side
 Pressure bearing assembly
 Tight tolerances
 < 0.1 % cobalt content
 Procured by TE-MSC-CMI
 Specification ready, IT will follow
 Delivery of first unit expected Mid-October 2017
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Small machined components
 Specific
 Flanges in 316LN, 3D forged (EDMS 790773)
 Other components in 304L <0.1 % Cobalt content
 Procured through EN-MME (subcontracting)
 Drawings finished end of May
 Delivery of first unit expected October 2017
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Pipes
 Specific
 4 different diameters (M, N, X, V’ lines)
 3 standards
 1 non-standard (X line)
 According to specification EDMS 1380627
 Follow-up by TE-MSC-CMI
 From CERN store
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Busbars
 Designed and manufactured by TE-MSC-LMF
 Delivered with supports and insulation
 First set ready for October 2017
(see R. Principe’s presentation)
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LHC standard components
 Type
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Cold bores
Support posts (fixed and sliding)
Interconnection flanges
Bellows
 In stock
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Standard components
 Type
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Screws, nuts, washers
Taps
O-rings
Braids
 Follow-up by TE-MSC-CMI
 List finished end of May
 Procurement in the shadow of other components
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MLI
 Specific
 Contract will include design and manufacture
 According to CERN specification
 Contract follow up by TE-MSC-CMI
 Specification ready, IT will follow
 Delivery of first unit expected October 2017
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Vacuum vessel
 Specific
 2 types (Type A and Type B)
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In combination with 11T cryostats
Contract follow up by TE-MSC-CMI (M. Struik)
Contract placed
Delivery of first unit expected end of October 2017
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Bottom tray
 Specific
 First unit machined at CERN
 DR created for series
 In combination with 11T bottom trays
 Contract follow up by TE-MSC-CMI
 Delivery of first unit expected end of October 2017
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Schedule summary
QEP - Procurement schedule
2017
#
Description
In charge
Date
May
June
July
August
2018
September
October
November December
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Cold mass
H-beam
P. Moiret
Pre-series
Series
Shuffling module
A. Vande Craen
IT out
Contract
Pre-series
Series
Small mechanical componentsP. Moiret
Drawings ready
Pre-series
Series
Thermal shield
Bottom tray
M. Struik
Pre-series
Series
Vacuum vessel
M. Struik
Pre-series
Series
MLI
A. Vande Craen
IT out
Contract
Design
Pre-series
Series
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15/10/2017
18/12/2017
31/05/2017
03/07/2017
15/10/2017
3
4
5
6
7
8
March
April
9 10 11 12 13 14 15 16 17 18
X
X
X
X
X
X
X
X
X
X
X
28/10/2017
X
28/10/2017
31/05/2017
03/07/2017
30/08/2017
15/10/2017
15/01/2018
2
February
X
X
31/05/2017
01/10/2017
18/12/2017
January
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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Conclusion
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Conclusion
 Procurement strategy and roles well defined
 Follow-up of so many components is challenging
 Ready for assembly of first unit in November 2017
 Ready for series production in January 2018
 Last components at CERN in April 2018
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Thank you !
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