1. The Greek Muon Chambers (BIS) The three Greek Laboratories: 112 (90 BIS30 +22 BIS36 ) chambers ALL CHAMBERS @CERN since Sept 04 University of Athens (UoA) Tube wiring/assembly (30,000 tubes finished Dec.2003) National Technical University of Athens(NTUA) Quality Assurance/Quality Control of tubes (30,000 tubes finished Mar.2004) University of Thessaloniki (AUTh ) C hamber assembly (112 chambers finished April 2004)

2. The Greek ATLAS Muon Collaborating institutes UoA C. Kourkoumelis P. Ioannou D. Fassouliotis I. Hatziantonaki K. Nikolopoulos D. Pappas NTUA M. Dris A. Filippas E. Gazis T. Alexopoulos E. Katsoufis T. Papadopoulou E. Fokitis Y. Tsipolitis S. Maltezos A. Tzamarioudaki P. Savva AUTh Ch. Petridou T. Liolios M. Manolopoulou S. Dedousis M. Chardalas D. Sampsonidis T. Lagouri K. Ypsilantis A. Krepouri C. Lamboudis K. Economou K. Filippousis

3. …providing the services the procedure  Preparation activities home Preparation activities home ( gas bars, cables +29 chambers at Thessaloniki) FINISHED summer 2004  Stage 1 (Blg 184 : equip with gas bars, FC’s, HH’s+ MECCA test Stage 1 (Blg 184 : equip with gas bars, FC’s, HH’s+ MECCA test 78 chambers at CERN, test for gas leak OK) STARTED March 2004 - FINISHED Sept 2004 (but 7 chambers)  Stage 2 NOW HALF_FINISHED Stage 2 NOW HALF_FINISHED  Electronic Noise test NOW Electronic Noise test NOW  Cosmic Ray test NOW Cosmic Ray test NOW  Database NOW Database NOW

4. Blg 283 (ALL 112 CHAMBERS) Test facilities shared with BIL team

5. Stage 2 (Bldg:283 started Oct 2004 after gas leak test) Equip chambers with:  gas supply brass tubes, plugs, valves etc gas supply brass tubes, plugs, valves etc  Mezzanines boards +FC covers Mezzanines boards +FC covers  alignment platforms + cables + measure them alignment platforms + cables + measure them  HV and readout cables (stiff cables/support!!) HV and readout cables (stiff cables/support!!)  B field platforms +cables B field platforms +cables  T sensor cables T sensor cables  Protective covers Protective covers A team of 2 technicians working on them since Oct Since Dec. 3 technicians + ½ physicist (since Jan.) FINISHED 56 CHAMBERS RATE IS : 4 min to 5 max chambers/week Expect to finish by Easter (Greek)

6. …providing the services Stage II-Blg 283 (ALL CHAMBERS) Noise test/ Cosmic Ray Test (10 chambers before Xmas+restarted last week) Data base A team of 1 physicist –S.Vlachos (since Jan.) +½ physicist (Ph.D.student) (from March) Leak test/certification

7. CONCLUSIONS … providing the services+commissioning the chambers Stage I- Blg 184 Finished 6 months ago (but 7 chambers are still bare) Stage II-Blg 283 (ALL CHAMBERS) Half are fully equipped, rest by May Integration has just restarted MAIN EFFORT NOW Expect to finish by July