Status of Signal Hedgehogs

1
Status of Signal Hedgehogs Atlas Muon elx
meeting E. Spiriti

• Prototype versions
• HG-mezzanine connector business
• Final production organization
• Test setup at the company

2
Signal Hedgehogs (4 layer chambers)
http//www.roma3.infn.it/spiriti/hedgehogs-6x4.ht
ml
4 layers 10K version delivered

• Tested successfully at
• Boston (EIL)
• Freiburg
• Cern (BIS)
• Roma3 (BIL)

3
Signal Hedgehogs, shaped version
(420) prototypes produced September 2001 shipped
to Boston, LMU, LNF, MPI, Roma3

• Few shielded PCBs ( only for 4 layers) produced
• ( under test at Boston )
• Possible new run for new shaped shielded PCBs?
• ( under discussion )

4
Hedgehog-mezzanine connector business
http//wwwatlas.mppmu.mpg.de/atlas_mdt/mdt_elx/may
_2001/
FC_vert_space_S_Podk_5_01.hpgl
FC_vert_space_U_Ldgf_5_01.eps
24.95mm
21.00mm
Hedgehog Mezzanine distance (when inserted)
Real board 22 mm

• 10K production DW-08-11-L-D-635
• new shaped DW-08-11-L-D-535
• final production ZSS-108-04-G-D-825

Length 23.62mm
5
Final production organization
CORE cost distribution for signal HG

• Rome3 group submitted already orders for
• the INFN (LNF, Rome, Pavia) production
• 650650 boards for BML
• 760760 boards for BIL

• R. Richter proposal is to provide shadow orders
• to the same companies by all other groups.
• Rome3 responsible for
• technical support
• providing test facilities to the company

6
Costing component procurement
Cost per board 36 CHF

• HV murata capacitor and pin receptacle
• ordered thru CERN (HV hedgehogs tender)
• all remaining components ordered in Italy
• PCBs from a company in Rome (ELCO)
• connectors from Samtec still open?

7
Test fixture prototype
HV input
Temperature and umidity sensor
Modified to allow testing of all 4 types

• new version housing 8 boards is being built
• two will be provided to the assembly company
• test procedure completely automatic
• time scale March 2002

8
Test fixture for production tests
0.8 m
1.8 m
Cytec HV switches
HV lines
Pico Amperometer (from Pavia)
HV power supply
Windows PC
RS232
Caenet