Phase II Collimators at CERN: design status and proposals. EuCARD/ColMat kick-off meeting 17 th June, 2009. Alessandro Bertarelli. Who at CERN. Mechanical Engineering: Alessandro Bertarelli, Alessandro Dallocchio, Ricardo de Morais Amaral
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Phase II Collimators at CERN: design status and proposals
EuCARD/ColMat kick-off meeting
17th June, 2009
Mechanical Engineering: Alessandro Bertarelli, Alessandro Dallocchio, Ricardo de Morais Amaral
Material Science: Gonzalo Arnau Izquierdo, Romain Blanchon, PhD student
Mechanical Design: Roger Perret, Arnaud Bouzoud, Bruno Feral, Marc Timmins
Manufacturing: G. Favre, L. Ferreira, A. Cherif
Plus many more from EN, TE and BE departments
Phase II Design options
…depending on RF and cleaning efficiency specifications…
Metal jaw (high electrical conductivity) vs. Ceramic jaw (non-conductive) on metal conductive support...
Phase II Design baseline (v1)
Modular concept to fit in alternative jaw materials ...
FINE ADJUSTMENT SYSTEM
1st version of equipped jaw (1 adjustable support) … SiC absorber shown …
Ceramic tiles SiC brazed on metal (conductive) support …Cu-CD is favorite candidate
Machined cooling circuit with brazed cover.
Fine adjustment system
RF contacts ensure electrical conductivity between jaw pieces
Alternative design of equipped jaw based on 2 intermediate adjustable supports …
Fine adjustment system
Mo Back - Stiffener
Cut jaw: each piece is independently supported on the back stiffener. Enhanced geometrical stability
3-pieces jaw independently cooled by three separate brazed coolers
Jaw - Stiffener
Machine cooling circuit with brazed covers
Back - Stiffener
Using high Z-material leads to higher energy deposition (up to a factor 5 increase w.r.t. Phase I). Higher cooling capacity is essential to ensure geometrical stability…
Two prototypes including machined circuit, brazed cover and jaw mock-up have been produced and successfully tested…
The goal is to define a complete and standardized procedure according to UHV specs. in order to qualify the design.
Test successfully performed:
BPM functional prototype
OFE-Cu jaw support
Mechanical design of simplified jaws featuring BPMs…
Motivation: BPMs integration strongly influences the design of the whole system. A rapid testing in the SPS of the BPM embedded system is mandatory to validate the concept.