2. Tracking Calorimetery Particle Identification WBS 1.5.2 DETECTORS

4. Space Issues CDR has 5cm gaps: Move BCAL out 3cm 2cm 8cm NEW Curtis Meyer, 20 May’2004

5. 36/48 Modules of B.C Design 1. 1.This Design incorporates two Carbon- fiber cylinders of 0.5 cm thk 2.The CDC is enclosed in a Carbon_fiber cylinder running all along the length of 2m 3.The second cylinder is 4m long supporting the rails for CDC & FDC 4.Two rails are positioned at 4 O’clock and 7 O’clock positions

6. 0.65 ~ 0.85 DETAILS OF THE RAILS AND SPACING

7. 1. Casing & Track rail: Non-magnetic stainless 2. Steel Balls: Silicon nitride ceramics 3. Under seal: Nitrile rubber without metal part 4. End plate: 316 stainless steel 5. Ball retaining band: 304 stainless steel 6. End seal: 316 SS. 7. Screw: XM7 stainless steel 8. Grease fitting: Brass 9. Grease: Shell Alvania EP2 2 LWH20 series rails from IKO LOAD RATING Static : 4.52 KN Dynamic: 4.10 KN