Presentation on theme: ". TYPICAL SUPERCONDUCTING MAGNET TEST SEQUENCE. PREPARATORY TESTS AT ROOM TEMPERATURE Lyre Test: Simulate Effect of Thermal Contraction in Cold condition."— Presentation transcript:
PREPARATORY TESTS AT ROOM TEMPERATURE Lyre Test: Simulate Effect of Thermal Contraction in Cold condition Check Functioning of Quench Heaters and Voltage Taps. Measure Heater resistances and perform High Voltage Insulation Test
COLD TESTS High Voltage Insulation Test: Before Magnet Powering Slow Power Abort Test: Power the Magnet upto 1000 A and then back to Zero with Controlled Ramp Rate to check the power converter operation Provoked Quench Tests: Power the Magnet up to 1500 A and check Quench-Heaters protection by provoking a Quench by triggering the heaters.
…..COLD TESTS TRAINING of Magnet: Feed the Magnet with Repetitive Current Ramp cycles until it gets TRAINED (Following the Training Rules) (MAGNETIC MEASUREMENTS :Measurement of Field profile, Harmonics etc. by rotating a coil in the magnet aperture) HV Insulation Test: After Completion of Magnet Power Tests Minimum Energy Quench: Provoke a Quench by Firing one LF Heater at minimum required Heater-Voltage
FINAL TESTS AT WARM Final Check for Electrical Integrity of Voltage Taps and Temperature Sensor after completion of Power Tests at cold Final Resistance Measurement at Room temperature of Quench Heaters, Voltage Taps, Temperature sensor etc.
New Magnet Magnet Test Report (MTR) Scan Magnet Labels ICS – HV test (WP04)
Cryogenic Phases A. Cool down to 80 K B. Cool down to 4 K C. Cool down to 1.9 K D. Warm up Ideal (Optimum) Case Phases A & D – 3 Benches Phase B – 1 Bench Phase C – 3 Benches
Bench Priorities Objective – Maximise Production Achieved by : Distributing the benches to different phases of production ( ICS, Cryo, Warm & Cold) so that the common resources can be shared efficiently Points to note: Meet the optimum cryo requirements Avoid two magnets on the same cluster in the same phase (esp. cold)
Points to note Switch off LF & HF Acquisition Connect D20 connector after HV test Close the main Inlet & Outlet valves of cooling water first Select the bench before charging the Quench Heaters Change Power Converter to CC before Prep5 & PT12 Disconnect AC signal cable on CFB after PT1 AC compensation
Points to note ….. Write the TT821 temp. sensor reading from LF viewer (TEMA) in MTR Update SMTMS as soon as possible Check the temp. entry when a new test added in SMTMS Enter Bench & Magnet name in E- logbook MTF password is different ! Entries in MTF can not be corrected after saving
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