HCR-SMGMS-RPC @

HCR-SMGMS-RPC @ NIPNE-Bucharestin a close collaboration with GSI and Uni-Heidelberg

~ 5 years ago

These days

Glaverbel glass 109.7·cm

Electrode sequence:

- 1.1 cooper foil covered glass - cathode

- 0.3 nylon fishing line

- 1.1 glass plate (supporting the spacers)

- 0.3 nylon fishing line

- 1.1 glass plate

- 0.3 double faced strip readout plate

symmetry plane

Readout electrode:

- support:0.3mm tick pcb plate

- 16 gold coated strips on each side

- pitch: 1.27 mm, 1.00 mm strip width,

1.54 mm gap width

Sizes:

glass electrodes: 46 x 900 mm2

readout plate: 0.3 x 46 x 980 mm3

housing: 40 x 80 x 960 mm3 Al box

Last week results: U=- 6.5 kV, 60Co source

standard gas mixture: C2F4H2/isobutene/SF6 85/5/10

Where we are? Needs

- the prototype works

- the first estimates on the time

resolution using 60Co source will

be obtained in the next couple of

weeks

Short term plans

- In beam tests @ GSI-Darmsatdt

April-May within FOPI

Collaboration - to be discussed

- 2 -2.5 GHz scope

- one more TDC2228A

- two 2249W ADCs

- 2-3 CF4000 discriminators

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- 30 MeV e - ELBE Rossendorf

June 2005