CLASSE prototype:mechanical concepts
G. De Michele, EPFL-PSI-CERN on behalf of CERN teamSLAC , 16th April, 2012
CLASSE prototype: CATIA model (1/3)
6 sections, 26 cells each, compact coupler designClamped aluminum disks
Ø180mm
(x6)TD26 with Compact Couplers
Cell shape accuracy 20µm
Aluminium diskDamping
material (SiC)
Threaded rod for disk clamping
Corner for SiC fixation
Al disk
Features for Tank alignment on the girder
Features for AS alignment in the Tank
Reference spheres
ASAS
ASAS
ASAS
A. Solodko, CERN
Beam
CLASSE prototype: CATIA model (2/3)
A. Solodko CERN
Frames for AS fixation
Screws for vertical AS alignment (x5)
Blocks for horizontal AS alignment (x4)
CLASSE prototype: CATIA model (3/3)A. Solodko, CERN
•Estimated total load of the CERN installation is about 400 kg•Two vacuum ion pumps (noble diode
pumps, 53 l/s)•The RF structure is aligned mechanically
inside the vacuum tank•The vacuum tank will be aligned to the
beam axis by means of adjustable feet•Two tooling balls on both ends are
present on top of the vacuum tank
CLASSE drawingA. Solodko, CERN
Existing girder (a)Clamps (b)
LI02 sector: location of ASSET test
Questions and remarks•Deadline - supposed date for the installation.•SLAC expert contact for integration check.•Needed alignment features on the tank. Possibility to use existing
strongback alignment features should be checked taking into account the weight of the tank (400 kg). Drawings or sketches if they exist.•Value for alignment.•What is the alignment procedure at SLAC and there will be a check of
AS alignment into the tank at SLAC? Is manpower available? •Bellows should be fabricated and inserted to cover 25cm length.•Two ion pumps (53 l/s) are required. Can SLAC provide them? If so,
which type of flange do we need?•The AS will be aligned and fixed into the tank at CERN. After that will
be shipped at SLAC.•Compatibility of .stp file with the up-to-date SLAC layout•The final drawings should be commented by SLAC colleagues (as soon
as they will be finished).