Irfu.cea.fr

ATLAS-MUONSR&D on MICROMEGAS

(Weekly meeting)

Outcome for the segmentationin 2-fold option

2013/07/23Patrick PONSOT on behalf of the scrutiny committee

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

sTGC DEAD ZONES?

2013/07/23 | PAGE 2

New 3D models and drawings have been provided

• Updated on the 21 of July 2013• Thanks to George and Benny!

Modifications

• The outer radius of the first module is increased of 10mm• The clearance between first and second modules is reduced from 10 to 4mm• The outer radius of the second module is increased of 4mm• The clearance between second and third module is reduced from 10 to 6mm

Dead zones between modules

• Between first and second modules DZ1=35mm (20+4+11)• Between second and third modules DZ2=37mm (20+6+11)

sTGC design is still in progress and a new version with light modifications

will arrive on tomorrow (to adjust the shape of the boards)

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

sTGC - NEW DIMENSIONS?

2013/07/23 | PAGE 3

New dimensions on drawing for large sectors

+ 10mm, but clearances have been decreased from 10 to 4mm

and to 6mm

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

sTGC - NEW DIMENSIONS?

2013/07/23 | PAGE 4

New dimensions on drawing for small sectors

+ 10mm, but clearances have been decreased from 10 to 4mm

and to 6mm

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

Radial overlaps with 2 MM modules?

2013/07/23 | PAGE 5

Large sector: The option 5-3 for PCBs has been chosen during the Roma meeting (MMM workshop on the 15-16th of July)

Dimensions have been adjusted to have 5mm clearance between the 2 modules

2220

2042

660

1410

2310

Option 5-3

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

Radial overlaps with 2 MM modules?

2013/07/23 | PAGE 6

Small sector: The option 5-3 for PCBs is the safer option The X dimension can be adjusted from 1280 to 1400mm, X<=1300mm proposed

by INFN to better match present construction facilities

1780

X

460

1350

2210

Option 6-2 too closed to sTGC dead zone

Option 4-4 too closed to sTGC dead zone

Option 5-3 is the safer option

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

Radial overlaps with 2 MM modulesoption 5-3 (for PCBs)

2013/07/23 | PAGE 7

The small and large sectors are represented on the same sketch in a vertical position

Large sectorSmall sector

sTGC

MM

sTGC

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

Radial overlaps with 2 MM modules

2013/07/23 | PAGE 8

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

Radial overlaps with 2 MM modules

2013/07/23 | PAGE 9

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

CONCLUSION

2013/07/23 | PAGE 10

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

DSMIrfuSIS/LCAP (PC N°12, Bt 123)Patrick PONSOT

Commissariat à l’énergie atomique et aux énergies alternativesCentre de Saclay | 91191 Gif-sur-Yvette CedexT. +33 (0)1 69 08 79 30 | F. +33 (0)1 69 08 89 47

Etablissement public à caractère industriel et commercial | RCS Paris B 775 685 0192013/07/23

Thank you for your attention !

| PAGE 11

CEA-Saclay/DSM/Irfu/SIS/LCAP - Patrick PONSOT for the scrutiny committee

Backup

2013/07/23 | PAGE 12