clic module preparation for the duty cycles
DESCRIPTION
CLIC MODULE Preparation for the duty cycles. Written by: Elena Daskalaki Checked by: Alexander Samochkine Approved by: Germana Riddone. Preparation steps. Preparation phase. Duty cycles start: 17/02/2014. Power measurements Air speed measurements FEA simulator - PowerPoint PPT PresentationTRANSCRIPT
112-February-2014 BE-RF-PM
CLIC MODULEPreparation for the duty cycles
Written by: Elena DaskalakiChecked by: Alexander SamochkineApproved by: Germana Riddone
212-February-2014 BE-RF-PM
Preparation steps
• Power measurements
• Air speed measurements
• FEA simulator
• Alignment measurements in transients
Preparation phase Duty cycles start: 17/02/2014
• Nominal operation mode
• Failure modes
• Transients
312-February-2014 BE-RF-PM
Power measurements
Scope: Verify the power given by the software
Target power (W) Given power (W)DBQ 150 146
PETS unit 220 210
SAS 820 600
• DBQ • PETS • SAS• Compact Loads
412-February-2014 BE-RF-PM
Air speed measurement
Scope‒ Measure actual air speed on the module surface‒ Observe the uniformity of air speed along the module as well as between the DB and MB‒ Provide these values as input to the module FEA simulator
Fans
512-February-2014 5BE-RF-PM
Air speed measurement
• The room air speed tuned to the nominal CLIC value of 0.7 m/s
• Measurement of air speed along the module at 5 points on the MB and DB.
• Measurement of air speed on grid of points covering the whole room
1 2 3 4 5
612-February-2014 BE-RF-PM
Air speed measurement
Position Air speed MB (m/s) Air speed DB (m/s)
1 0.31 0.33
2 0.22 0.19
3 0.18 0.18
4 0.15 0.14
5 0.11 0.12
• The air speed is uniform between the DB and MB.
• The air speed decreases along the structure. This fact is expected taking into account the position of the fans.
712-February-2014 BE-RF-PM
FEA simulator
1. Finalization of simulator based on heat transfer theory
2. Tuning of the simulator based on CLIC nominal values
3. Two simulations are currently running
• Air speed: 0.2 m/s• Room temperature: 20 and 40 oC• Power in components:
o DBQ 150 Wo PETS unit 220 Wo RFN loads 178 Wo SAS 820 Wo SAS loads 178 W
812-February-2014 BE-RF-PM
Alignment measurements in transients
Steady-state: Full set of alignment measurements using all fiducials
Transients: Measurement of selected fiducials every 1 oC
• One PETS complete
• One DBQ complete
Drive Beam Main Beam
• SAS-1 complete
• SAS-x extremes (beginning and end)
*Photos: M. Duquenne