1. CLAS12 - CT meeting 10 October 2013
Elec boxe
µm tube
HV dispatch
Barrel B6 flange
barrel
forward

2. CLAS12 micromegas tracker news.
New planning
Delivery mid 2015 of B2 (two layers) and forward
Delivery mid 2016 of B6 (6 layers).
The µm tube + electronics are the same from B2 to B6 (compatible with Si4)
Only the barrel flange change when going from B2 to B6. Forward stays the same.
All detectors (barrel and forward) will be equipped with resistive technologies using serigraphy process.
All detectors will be manufacture at CERN.

3. 3D study
Since June the forward vs keepin was reduced: 35 mm were gain on the 40 mm needed
Smaller attachment to barrel
More dense stack of disk.
Still missing 5.25 mm vs HTCC

4. Physics angle
The angle of the forward are: 8,38° to 28,36°

5. µm tube At the rear of the tube: OK for: To be checked
Electronics boxes
Optical concentrator removed (on cart)
HV and gas distribution: between boxes
To be checked
Last tube step (mandatory step ?)
Tube length with flange
Attachment of the flange (space needed for tooling)

6. Rear of µm tube
Attachment access needed?
Step needed ?

7. Coming soon Alignment process and attachment of tubes
We need iteration before next meeting in JAB
Geometer target, procedure, tooling,…
Date of next meeting at Jlab
Between mid December 2013 and end January 2014
Goal (for Saclay):
Final design review for micromegas tracker
Geen light for detail drawing and realization
Validation of attachment of µm tube
work on definition of servitude in situ (gas hardware and safety, electronics rack,…)
…/…