Moving pipe: R&D+‘physics constrains’ K. Piotrzkowski ( UCLouvain )
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Transcript of Moving pipe: R&D+‘physics constrains’ K. Piotrzkowski ( UCLouvain )
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Moving pipe: R&D+‘physics constrains’ K. Piotrzkowski (UCLouvain)
Moving pipe development and prototyping so far
Physics with detectors at 220/240m - moving pipe present baseline
HPS-AFP Meeting, CERN, 15 March 2011
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Moving Hamburg pipe concept
CERN HPS-AFP Meeting, 15/3/2011 K. Piotrzkowski 2
Successfully used at HERA:Robust and simple design, + easy access to detectors
Motorization and movement control to be cloned from LHC collimator design
JINST 4 (2009) T10001
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K. Piotrzkowski 3CERN HPS-AFP Meeting, 15/3/2011
From JINST 4 (2009) T10001
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K. Piotrzkowski 4
Back in 2007… R&D for FP420
CERN HPS-AFP Meeting, 15/3/2011
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Back in 2007… R&D for FP420
CERN HPS-AFP Meeting, 15/3/2011
Results summarized in JINST 4 (2009) T10001
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New design for pockets
Prototyping moving beam pipe in 2008
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Prototyping moving beam pipe in 2008
Benoît FLORINS
First: Pre-machining pockets
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New approach: Pockets produced by Electro-erosion
Prototyping moving beam pipe in 2008
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Moving beam pipe prototypeUCLouvain
Two pockets laser welded: second for Cherenkov detectors is 30 cm long
Used for RF tests in Manchester
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Moving pipe: Detector ‘box’
CERN HPS-AFP Meeting, 15/3/2011 K. Piotrzkowski 10
Thin 400 mm entrance and side windows
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Moving beam pipe assembly
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Moving beam pipe: Last prototype from 2009UCLouvain
• Improved laser welding + flatness measurements
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Quality of pocket windowsUCLouvain
• Very good flatness measured : ±50 mm over full surface;
• And between two pockets !
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Moving Pipe: Stage One Detectors at 220/240m
CERN HPS-AFP Meeting, 15/3/2011 K. Piotrzkowski 14
• Pocket production well developed, man power and expertise still available
• Meantime for HPS240 design one pocket design is considered for baseline; decision by end of March’11(Length of Cerenkov detectors should be minimized)
• Torino group is pursuing idea of making the whole pipe by electro-erosion from one piece
PLAN:Once the detector box dimensions; RF screen and bellow types are defined new production will be launched – we expect to have new fairly complete prototypes in Fall’11
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CERN HPS-AFP Meeting, 15/3/2011 K. Piotrzkowski 15
HPS Design Baseline?Guiding principle for Stage One – simple, robust and workable design (NB.
Details of the pocket + detector box design could be different in Stage Two):- One ~45 cm long single pocket (~15cm tracker ~30cm timing) and one,
common detector box- Use secondary vacuum – already 10-3 bar should be OK – controlled
(common) environment – temperature/humidity- Thin windows of 300-400 mm , inner height ~10 mm, entrance/exit
windows slightly bigger than in FP420- Support table/LHC interface envelops – ‘final’ designs
Full design developments + Integration aspects (vacuum, RF screens, BPMs, bellows, cooling, motorization, Radiation hardness and activation, interlocks/emergency procedures, etc, etc) – let’s discuss after Mimmo’s talk
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Thin window size
CERN HPS-AFP Meeting, 15/3/2011
Higgs events @ 240m from P.Bussey
From HECTOR