TE-MPE-EP, RD, 22-Mar-2012 1 Implementation and performance of the DHQDS with reduced nominal voltage for RQX.R1 R. Denz Acknowledgements: K. Dahlerup-Petersen, J. Mourao
Implementation and performance of the DHQDS with reduced nominal voltage for RQX.R1
Jan 13, 2016
Implementation and performance of the DHQDS with reduced nominal voltage for RQX.R1. R. Denz Acknowledgements: K. Dahlerup-Petersen, J. Mourao. Hardware and software modifications. Capacitor bank: 6 x 6 mF instead of 6 x 4.7 mF 850 V charging voltage. Mains transformer: - PowerPoint PPT Presentation
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TE
-MP
E-E
P, R
D,
22-M
ar-2
012
1
Implementation and performance of the DHQDS with reduced nominal voltage for RQX.R1
R. Denz
Acknowledgements: K. Dahlerup-Petersen, J. Mourao
TE
-MP
E-E
P, R
D,
22-M
ar-2
012
2
Hardware and software modifications
Mains transformer:Secondary voltage rating changed
QPS supervision:QPS_OK setting changed for signal U_HDS_2_Q2 to 0.95 * 800 V = 760 V
Capacitor bank:6 x 6 mF instead of 6 x 4.7 mF850 V charging voltage
TE
-MP
E-E
P, R
D,
22-M
ar-2
012
3
Quench heater discharge
U_HDS_2_Q2 = 850 V 820 V across heater strip (Rcable = 0.7 Ω , Rheater = 19.0 Ω)Uearth = |410 V| during nominal discharge Uearth_max = |820 V| during discharge and capacitor bank fuse blown
MQXBMQXA modified
TE
-MP
E-E
P, R
D,
22-M
ar-2
012
4
Quench heater discharge
MQXA19.7 Ω
MQXB11.5 Ω
MQXA modified
TE
-MP
E-E
P, R
D,
22-M
ar-2
012
5
Quench heater discharge
Enominal = 2.65 kJ
Emodified = 3.03 kJ
To be re-checked after LS1 as the length of warm cables will increase (relocation of protection systems within R2E campaign).
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