Ammosov Vladimir ammosov pra

Status and plans of R&D for DHCAL in Russia: 

Status and plans of R&D for DHCAL in Russia Vladimir Ammosov Institute for High Energy Physics Protvino Moscow region, Russia

Content: 

Content 1. Tuning of RPC performance 2. RPC design for DHCAL 3. RO electronic activity 4. R&D plans

Tuning of RPC performance: 

Tuning of RPC performance Use glass for anode and cathode ( standard RPC) Decrease the charge in the gas gap Consequences: Possibility to diminish ageing effects Possibility to increase maximal rate Joint adjustment of RPC and RO electronics Decision

Tuning of RPC performance: 

Tuning of RPC performance

Tuning of RPC performance: 

Tuning of RPC performance

Tuning of RPC performance: 

Tuning of RPC performance - It seems that tuning should be done around basic TFE/ISO mixture It is intended to study (10-100) pC region withh possibility to work at 50 mV threshold

RPC design for DHCAL: 

RPC design for DHCAL

RPC design for DHCAL: 

RPC design for DHCAL

RPC design for DHCAL: 

RPC design for DHCAL Dead zones

RO electronic activity: 

RO electronic activity General scheme for 64 channel read out Two parts: Conditioning (analog) FPGA (digital)

RO electronic activity: 

RO electronic activity Steps for design and usage Approaches for conditioning Comparators - Protvino Trans impedance amplifiers (TIAs) - Minsk

RO electronic activity: 

RO electronic activity Conditioning - comparators

RO electronic activity: 

RO electronic activity Conditioning - comparators

RO electronic activity: 

RO electronic activity Conditioning - TIAs

RO electronic activity: 

RO electronic activity Conditioning - TIAs

R&D plans: 

R&D plans design and tests of approach-0 for RO electronics (step 1) Dec02 tuning of RPC performance to Dec02 decrease the gap charge design of a small RPC plane Dec02 construction of this plane with a few hundred RO channels (step 1) Mar03 beam tests of this plane in IHEP Apr03