1. KEK Hiroshi Yamaoka Task list for Magnet/Iron yoke Solenoid magnet Iron yoke Experimental hall and other facilities May 11, ’05

2. Solenoid Iron Yoke B=3T Coil/superconductor design - Optimize coil configuration 2 layers coil+ Al support cylinder + Correction coil? → Calculation: Magnetic force on the coil - Superconductor design Conductor size, Material(Al?, Cu?) → Calculation: Load line, Quench simulation Coil support system Configuration(Rod?, triangle shape?, string?), size? → Calculation: De-centering/shifted force Self-weight, Thermal load Coil supports have to withstand these forces. Cryostat design - Calculate required wall thickness. Calorimeter is supported on the inner vacuum wall. Assembly/Installation - Assembling procedure. - How install the magnet into iron yoke. Cooling scheme Thermal design Cryogenics system Power Supply Task list for Magnet Tesla Correction coil R4.0m

3. Magnetic field calculation - Optimize iron yoke configuration Field uniformity<2mm +Correction coil Try to loose amount of iron Support structure for iron yoke (barrel yoke/end yoke) How support the yoke against forces. Fixture, Bolts? Configuration, Size → Calculation: Self-weight, magnetic force, seismic force? The size of support → Minimize as possible Yoke assembling Weight of one layer >1000 tones. → Assembled from several piece of segments due to a limit of crane capacity. Segment configuration with keeping stiffness as complete one structure has to be considered. Construction Make a construction procedure → Easy/quick construction with high assembling accuracy. Adjust way to the beam line/level Maintenance procedures Design: Easy/quick access mechanism to the inner detector. Cable Earthquake Self-weight Mag. force Solenoid Barrel Yoke B Uniformity Task list for Iron Yoke Tesla End Yoke

4. Space for Solenoid/Yoke assembling Estimation of required space for; - Coil winding - Cryogenic system - Yoke assembling. Required crane capacity Experimental hall and other facilities