Frank Hartmann IEKP TEC Meeting July 03 Ring 6 mechanical Qualification In a nutshell: rel. precision agreement (Aa-Ka): 3-5µm ( rot.) abs precision agreement (Aa-Ka): 30-50µm Problems with the zero-positioning! (circle-ellipse-hole!?! in the graphite) One example:
Frank Hartmann IEKP TEC Meeting July 03 Circle hole in graphite & bush Round holebush
Frank Hartmann IEKP TEC Meeting July 03 Ellipse hole Another focus!
Frank Hartmann IEKP TEC Meeting July 03 Ring 4 mechanical qualification 8 R4 modules from Lyon KA Already measured! Aachen for crosscheck (Braunschweig yesterday) To mention : 4 sensors are within 10µm vs. rot. 2 sensors are +60µm off vs. rot. 2 sensors are -60µm off vs. rot. –?? 4 sensors/plate 4 in the “middle”, 2 “left”, 2 “right” ??
Frank Hartmann IEKP TEC Meeting July 035 pt100 Module Ring 5 (front-back) normal stereo
Frank Hartmann IEKP TEC Meeting July 03 Dummy petal assembly KA-dummy-petal-cooling TASK-FORCE
Frank Hartmann IEKP TEC Meeting July 03 Ready Detail: bridge IR Leds to inject current to simulate irrad. To investigate cooling at final power consumption! ( =950 & 1050nm) IR Leds
Frank Hartmann IEKP TEC Meeting July 03 Cooling tests in Stra
Frank Hartmann IEKP TEC Meeting July 03 R7 2 assembled (1 for KA, 1 for Stra) Mechanics: good, stiff, tolerance Si-graphite ~500µm 1st run: no problems All QTC defects found. leakage 3.6µA (250V) 2nd run: 1 NEW PINHOLE leakage (250V) 3rd run: 1 ADD. PINHOLE Leakage 400µA (250V)
Frank Hartmann IEKP TEC Meeting July 03 R7 prototype 1 in KA – 1 in Stra Known shorts Known pinhole 3rd run: Shorts, pinholes: bonds removed 1st run 3d run Add. Pinhole (see Tonys talk) 350µA (one strip) 70µA (one strip) 1st run
Frank Hartmann IEKP TEC Meeting July 03 Strip defects Strip 19, pinhole run 3 Strip Strip 105 new pinhole In 2nd run QTC pinhole! QTC short
Frank Hartmann IEKP TEC Meeting July 03
Frank Hartmann IEKP TEC Meeting July 03 R5 irrad hooked to hybrid all -12°C Cosmic run Some hot channels flagged