| trigger decision in < 106 ns |
| pointing to tracker to within mult. scatt. limit |
| overall pi/mu rejection = 2.5 x 10^-4 |
| horizontal size | 563.59 cm |
| vertical size | 544.52 cm |
| depth | 7.49 cm |
| volume | 2.30 m^3 |
| gas volume * | 0.90 m^3 |
| weight ** | 3270 pounds |
| tube width | 8.35 cm |
| tube depth | 1.35 cm |
| active area (hor.) | 508.0 cm (H) x 496.1 cm (V) |
| active area (ver.) | 538.1 cm (H) x 489.0 cm (V) |
| tube length (hor.) | 502.0 cm |
| tube length (ver.) | 501.0 cm |
| # readout channels (hor.) | 59 |
| # readout channels (ver.) | 64 |
| # HV/gas chains (hor.) | 6 |
| # HV/gas chains (ver.) | 6 |
* Takes into account the width of the comb and outer walls.
** (Includes only panels and tubes. Addition of internal electronics, cables, etc. will add less than 10% to these numbers).
| horizontal size | 294.12 cm |
| vertical size | 424.82 cm (G) 442.38 cm (B) |
| depth | 7.49 cm |
| volume | 0.94 m^3 (G) 0.97 m^3 (B) |
| gas volume * | 0.31 m^3 |
| weight ** | 1240 pounds (G) 1300 pounds (B) |
| tube width | 8.35 cm |
| tube depth | 1.35 cm |
| active area (hor.) | 238.4 cm (H) x 378.5 cm (V) |
| active area (ver.) | 218.9 cm (H) x 370.1 cm (V) |
| tube length (hor.) | 250.4 cm |
| tube length (ver.) | 382.1 cm |
| # readout channels (hor.) | 45 |
| # readout channels (ver.) | 26 |
| # HV/gas chains (hor.) | 4 |
| # HV/gas chains (ver.) | 2 |
* Takes into account the width of the comb and outer walls.
** (Includes only panels and tubes. Addition of internal electronics, cables, etc. will add less than 10% to these numbers).
| Parameter | Value |
|---|---|
| High Voltage | 4000-5000 V |
| HV Current | < 1uA/tube, < 26uA/chain |
| HV Current to burn out in-panel fuses | 5mA |
| Low Voltage | +/- 12 V |
| LV Current | 5.3mA (+12V) and 6mA (-12V) per readout channel |
| In-panel gain | 150 (wide-band) |
| Temperature requirements | No rapid temperature swings, room temperature should be fine |
| Cooling requirements | No cooling required for panels, FEE not defined yet |
| Gas | Carbon Dioxide/Isobutane (91:9) |
| Pressure | 2" H2O (no rapid atmospheric pressure changes) |
| Flow | < 1 exchange/day = 35 liters/minute (total), 60 cc/min/chain |
| In-panel flammable gas monitors |
| Input pressure monitors |
| Output flow monitors |
| Input gas valves |
| FEE monitoring not yet defined |
| FEM crate locations | West side of each arm |
| Cable type | 34-conductor circular cross section twisted pair (or twist-n-flat) cables from panels to FEM crates |
| # cables per large panel | 8 |
| # cables per small panel | 5 |