1. Sector 29 PS Systems Stability Tests for LCLS
Antonio de Lira
Power Conversion Department
May 22, 2005

2. Sector 29 PS Systems Stability Tests for LCLS
Purposes:
Test a QE PS System over Sector 29
Check PS Stability vs. time and temperature
Measure Boost PS stability at 15 A
Measure Buck PS stability at 10 A

3. Sector 29 PS Systems Stability Tests for LCLS
Boost PS under test
Data acquisition system:
Precision Zero-Flux Current Transducer (DCCT)
61/2 precision multi-channel DVM
Boost PS units
30V/20A

4. Sector 29 PS Systems Stability Tests for LCLS
Bulk PS under test
Data acquisition system:
Precision Zero-Flux Current Transducer (DCCT)
61/2 precision multi-channel DVM

5. Sector 29 PS Systems Stability Tests for LCLS
Booster Quad 501 PS stability results
Mean: A
Minimum: A
Maximum: A
Variation: 0.12 %
∆ Temp. : 11.4 °C
Note: Measurements taken on May 13, 2005

6. Sector 29 PS Systems Stability Tests for LCLS
Booster Quad 501 PS Reference stability
Mean: A
Minimum: A
Maximum: A
Variation: 0.009%
∆ Temp. : 11.4 °C
Note: Measurements taken on May 11, 2005

7. Sector 29 PS Systems Stability Tests for LCLS
LGPS 1 (Bulk Quad) PS stability results
Mean: A
Minimum: A
Maximum: A
Variation: 0.9 %
∆ Temp. : 11.4 °C
Note: Measurements taken on May 13, 2005

8. Sector 29 PS Systems Stability Tests for LCLS
LGPS 1 (Bulk Quad) PS stability results #2
Mean: A
Minimum: A
Maximum: A
Variation: 0.65 %
∆ Temp. : 11.4 °C
Note: Measurements taken on May 13, 2005

9. Sector 29 PS Systems Stability Tests for LCLS
Next steps:
Measure Boost PS Stability at 10A & 20A
Measure the ripple of the Boost PS
Measure the current monitor output signal out of the Boost PS
Measure the Bulk PS Stability at low current: 20A
Measure the ripple current on the Bulk PS