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).