Technical Design Report Super Fragment Separator

DRAFT
3. Geometry tests
For cryostated magnets the geometry of the bore and the position of reference surfaces on the
cold mass are measured with respect to the fiducials of the cryostat.
Stage 2 - Tests at Operation Temperature
All magnets have to be tested in operating conditions to warrant the full functionality, as testing is
considered cheaper than identifying a troublemaker in the ring and having it repaired.
During the tests all safety parameters and requirements have to be checked and fulfilled not to risk
to loose a magnet during the power test (e. g. a coil to coil short burning the conductors of the
magnet).
After all tests at operating temperature have been performed, the preliminary evaluation of the test
results has to be done.
The main steps of the tests performed at the operating temperature are outlined in the following:
1. Tests before Cooling Down
• Insulation Tests.
• Vacuum and Leakage Tests
• Check of purity of the helium process gas
• Resistance and Inductance Tests.
• Continuity and Instrumentation Tests.
2. Tests before Power Test at cold
• Insulation Tests.
• Vacuum and Leakage Tests
• Continuity and Instrumentation Tests.
3. Power Test
• Training the magnet up to the nominal current - First Thermal Cycle Criterion
• 'Fast' excitation and de-excitation
• Training during the second thermal-cycle if the First Thermal Cycle Criterion is not
fulfilled - Second Thermal Cycle Criterion
• measurement of the resistance of all joints in the magnet
• Temperature margin
• AC and DC losses measurements
• Vacuum and Leakage Tests during all measurements
4. Cold Magnetic Measurements
• ∫ Bdl
, ∫ Gdl
, harmonics, axis
• Field at DC at least at injection, maximum field and at the geometrical middle
• For ramped magnets (SIS 100 / SIS 300) also the AC components
5. Tests after Power Test at cold
• Insulation Tests.
• Continuity and Instrumentation Tests.
6. Test after Warming Up
• Insulation Tests.
197