The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Development of RPCs for INO B.Satyanarayana TIFR, Mumbai, INDIA

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Principle of operation

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, RPC test setup Telescope

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Cosmic muon trigger and timing

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, NIM and CAMAC electronics

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Telescope rate monitoring

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Gas mixing unit

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical efficiency plot

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Studies with gas mixtures

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical timing distribution plot

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical time response plot

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical time resolution plot

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical charge distribution plots

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical mean charge plot

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical noise rate plot

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Typical cross-talk plots

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Summary of cross-talk measurements Gas MixtureSlit Size(mm)Cross talk(%) 62:8: :8: :8: :8: :8: :8:

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Effects of wet gases

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Recovering a damaged RPC Purging with pure Argon at high flow rate. Bubbling pure Argon through pure ethyl alcohol. Bubbling pure Argon through 25% Ammonia solution for 24 hours without electric field. Recovers efficiency and brings down noise rate. Detailed studies underway.

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, RPC recovery plots No of hours of gas flow

The 6th ACFA Workshop on Physics and Detector at Linear Collider, TIFR, Mumbai, December 15-17, Future plans Study of effect of wet gases on RPC performance, aging etc. Study of pickup strip materials, geometries & pulse characteristics Long term studies with small chambers. Improvements in the gas mixing unit, Cosmic test setup, etc. Procurement of dry gases. Production of 120cm X 90cm RPCs for prototype detector