bonding in catania

CMS Tracker Week, CERN, 26-29 April 2005

26 Apr 2005CMS Tracker Week - Bonding WGSalvatore Costa - Catania

Salvatore Costa

Bondingin

CATANIA

Università di Catania and INFN – Sezione di Catania

26 Apr 2005CMS Tracker Week - Bonding WG 2 Salvatore Costa - Catania

Catania: new facilities

• New bonding machine: Delvotec 6400– Since March 8th

– From Delvotec – Braunau am Inn (Austria)– Used (Siemens, Munchen – 5 years – 800 hours) & refurbished– On lease. Rent paid for 2005 only at the moment– Rent 1700 €/month– Will own if rent paid for 4 years– Oldest of 2 Hughes dismissed– Now in clean room: Delvotec, newest of 2 Hughes

• New operators– 2nd operator fully trained already since last meeting (Feb 2nd).– 3rd operator: Russian engineer with temp contract.

26 Apr 2005CMS Tracker Week - Bonding WG 3 Salvatore Costa - Catania

Catania’s Delvotec 6400

26 Apr 2005CMS Tracker Week - Bonding WG 4 Salvatore Costa - Catania

Catania’s new Delvotec 6400

• Delvotec 6400 vs. Hughes 2470 performance– Bonding times down:

• TIB34: 8’ 10” vs. 45’ + x• TIB12: 12’ 15” vs. 65’ + x• Backs: 15” vs. 1’ + x

– Reliability up:• Machine failure rate: negligible• Bonding failures: negligible• PHL- (DEAD) channels: none so far

– Experience:• 45 modules bonded w/ new machine• Programs for all module types ready: TIB34, TIB12, TIB12sl, TIB12sr (back/front/pulltest/after_pulltest)

26 Apr 2005CMS Tracker Week - Bonding WG 5 Salvatore Costa - Catania

Catania’s new Delvotec 6400

• Delvotec 6400 vs. Hughes 2470 bond parameters: In this area we are still experimenting. In general:

– There seems to by a narrower window available for all parameters

– Unable to achieve more then ~10g pull force– Parameters tuned up by Delvotec technician as ‘the best

for our parts’ are higher on Sensor than on PA• With Hughes, it was the other way around.• Other Centers have either similar par’s or slightly higher on PA• Gradually reducing gap while constantly watching foot

deformation and pull forces. • Done many pull tests, as prescribed in case of new setup• Still searching for the ‘best’ par combination

26 Apr 2005CMS Tracker Week - Bonding WG 6 Salvatore Costa - Catania

Catania’s new Delvotec 6400