Download - Interface of Plug-Compatible Cryomodule Components KEK Norihito Ohuchi 2008/3/41GDE-Sendai Meeting
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Interface of Plug-Compatible Cryomodule Components
KEK
Norihito Ohuchi
2008/3/4 1GDE-Sendai Meeting
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2008/3/4 2GDE-Sendai Meeting
From the presentation by Hitoshi Hayano at KEK-kick-off meeting on 2007/9/12-14
Vacuum vessel and cold mass
Cavity package
Quadrupole package
HOM absorber unit
Beam line pumping unit
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Previous Works for Cryomodule Component Engineering Design
• Defined cavity parameters by Lutz at FNAL-GDE Meeting on 2007/10/23– Cavity length = 1247 mm
– Maximum outer diameter• Cells = 210 mm, HOM coupler = 232 mm Max. Radius = 116 mm
• Definition of the responsible group to the interface components at FNAL-GDE Meeting on 2007/10/23
• Helium vessel parameters at SCRF technology meeting on 2008/1/18 after TTC meeting at DESY– Max. allowable pressure at room temp. and vacuum inside = 2 bar
2008/3/4 GDE-Sendai Meeting 3
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C1 level (cryomodule) interface for engineering designC1-level : Cryomodule (1)
2008/3/4 4GDE-Sendai Meeting
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C1 level (cryomodule) interface for engineering designC1-level : Cryomodule (2)
2008/3/4 5GDE-Sendai Meeting
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C2 level interface for engineering design (1)C2-level : Cold Mass (Vacuum vessel, support post, cooling pipes, shields)
2008/3/4 6GDE-Sendai Meeting
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C2 level interface for engineering design (2)C2-level : Cavity Package (cavity jacket, tuner, input coupler)-1
2008/3/4 7GDE-Sendai MeetingLL-cavity-package
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C2 level interface for engineering design (2)C2-level : Cavity Package (cavity jacket, tuner, input coupler)-2
2008/3/4 8GDE-Sendai Meeting
LL-cavity-package
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C2 level interface for engineering design (3)C2-level : Quadrupole Package
2008/3/4 9GDE-Sendai Meeting
Quadrupole design by FNAL
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C2 level interface for engineering design (4)C2-level : HOM Absorber, Vacuum Pump System
2008/3/4 10GDE-Sendai Meeting
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C3 level interface for engineering designC3-level :Cold Mass, Cavity Package, Quadrupole Package
2008/3/4 11GDE-Sendai Meeting
Each component has interfaces between the other components.
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Discussion
2008/3/4 12GDE-Sendai Meeting
1. Which level of the compatibility will be required for ILC cryomodule design work?• C1? C2? C3?
– Mass-production strategy in three regions• Production of one-third of total cryomodules in each region
• Cryomodule tests in each region
– Strategy of component exchange during the accelerator operation• Accident of component inside the cryomodule
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Proposal
2008/3/4 13GDE-Sendai Meeting
1. Compatibility at C1 level: “MUST”
2. Compatibility at C2 level – Cold mass
• Vacuum vessel, support post, gas return pipe and cavity support, cooling pipes
– Cavity-string• Cavities, input couplers, HOM couplers, tuner, connection bellows and flanges
• In the string, NO COMPATIBILITY in the base design
– Quadrupole package
– HOM absorber
– Pumping system
3. No compatibility at C3 level
4. Assign the responsible people for designing the interface components– FNAL: Don Mitchell, DESY: Lutz Lilje, KEK: Norihito Ohuchi