1. Micromegas modules achievements and plans
Paul Colas, CEA Saclay
Santander, LCWS 2016
Single modules
7 modules: : Electronics integration, 2PCO2 cooling, DLC coating
Future : 1 large module with gate?

2. SINGLE MODULE OPERATION
Several kinds of single modules were tried, with Carbon-Loaded Kapton, and resistive inks
Readout by T2K AFTER-based electronics
Operation was smooth and uniformity was good with CLK
Resolution down to 60 µm at z=0
31/05/2016
Micromegas modules

3. Mitigation of distortions at the boarder
For Micromegas: reconcile the grounding of the resistive layer with the field homogeneity.
0 V
380 V
See Deb Sankar’s presentation on distortions
31/05/2016
Micromegas modules

4. 4-layer routing (CERN) and 6-layer routing (Saclay)
24x72 pads, mm x 7 mm
27/01/2010
31/05/2016
Micromegas modules

5. 7-MODULE OPERATION
Electronics integration : make new FECs with AFTER chips. Zero-force connectors
2P CO2 cooling (see Deb Sankar’s talk)
Allowed distortions to be studied
Allowed a new coating to be studied: Diamond-Like Carbon (see A. Bellerive’s talk)
31/05/2016
Micromegas modules

6. Work in (slow) progress
Writing papers, finalizing analysis
Set up of a UV lamp (for ion disk)
Mounting of a setup for transparency measurement of a Raytech GEM gate
ASTRE electronics?
31/05/2016
Micromegas modules

7. Future Present electronics getting old (many mounting-dismountings)
Make a larger module (up to 8000 pads), with ASTRE electronics?
Adapt a gate (mesh? GEM?)
Future is very uncertain, as funding is
31/05/2016
Micromegas modules

8. Endplate panels Dimensions from ‘after-Cambridge’ Panel height 336 mm
Panel width : from 278 to 454
About 6800 pads per panel
31/05/2016
Micromegas modules