14 th liu-sps coordination meeting
DESCRIPTION
14 th LIU-SPS Coordination Meeting. Update on the renovation of the 200 MHz RF system . Cavities redistribution. 2011 : 4 cavities 2 x 4 sections 2 x 5 sections + 3 spare sections. 2018 : 6 cavities 2 x 4 sections 4 x 3 sections + 1 spare section. - PowerPoint PPT PresentationTRANSCRIPT
14th LIU-SPSCoordination Meeting
Update on the renovation of the 200 MHz RF system
14th LIU-SPS Coordination Meeting 2
Cavities redistribution
26 October 2011
2011 : 4 cavities
2 x 4 sections
2 x 5 sections
+ 3 spare sections
2018 : 6 cavities
2 x 4 sections
4 x 3 sections
+ 1 spare section
Courtesy of Elena
Shaposhnikova
14th LIU-SPS Coordination Meeting 3
First upgrade: Present amplifiers
26 October 2011
Ratings Present FutureCW5 seconds 650 kW 700kW
Pulsed43 kHz 900 kW 1100 kW
Tubes per year 6 + 16 7 + 18
BW-3dBCompromise to be
discussed with LLRFSiemens HVPS need a full re-cabling
and an air cooling improvementPhilips air cooling plant has to be
modifiedto allow higher power
Tetrodes:Present lifetime statistics, operating ~650 kW cw:
RS2004 : 20’000 hrs: 6 tubes per year
YL1530 : 25’000 hrs: 16 tubes per
year
HVPS need a full re-cabling and air cooling improvement to allow higher pulsed mode
It is planned to do ‘pre-modifications’ during next Xmas stop and to test
new configuration during a devoted MD in 2012
14th LIU-SPS Coordination Meeting 4
New RF power plant
26 October 2011
New RF Amplifier
New RF Building
LSS3 Tunnel integration
RF amplifier
1 mW
Coaxial transmission line150 meters
Accelerating cavity
1.7 MW
RF amplifier
1 mW
Accelerating cavity
1.7 MW
New RF Building
14th LIU-SPS Coordination Meeting 5
1.7 MW amplifier, i.e 1.4 MW cavity
26 October 2011
To have 1.4 MW available at the cavity input, 1.7 MW at the Final output are needed
A major improvement to present systems would be to have individual SSA drivers per PA
Taking advantage of the long experience we have with tetrodes and combiners, the solution will be 16 x PAs combined through 3 dB combiners
Four contracts : Drivers (SSA) Finals (SSA or Tetrodes) Combiners (3 dB above 100 kW) Transmission lines (coaxial, 345 mm
outer)
Drivers16 SSAFinal16 PAs
3 dBcombinersand power loads
120 m and 180 mCoaxial lines
To cavity input 120 m away
From Beam Control
1/16 splitter
1.7 MW-0.6 dB
total
1.5 MW
-0.2 dB
1.4 MW
14th LIU-SPS Coordination Meeting 6
2018 : two new power amplifiers
26 October 2011
Pulse mode: 1.7 MW max (10 µs / 43 kHz)
Average: 850 kW (thermal limitation)
Must be reliable: 24/24 hours 300/365 days
(2 months winter Technical stopAND a 1 day stop every 8 weeks)
Minimum 20 years of operation,(3 years of operation + 1 year off cycle)
Qualified solution must have demonstrated to be reliable under scientific operation (not only broadcast operation)
2 x 1.7 MW Klystron
2 x 4 x 450 kW Diacrodes
2 x 8 x 225 kW IOTs
2 x 8 x 225 kW tetrodes Equivalent to ‘Siemens’
2 x 16 x 106 kW tetrodes Equivalent to ‘Philips’
2 x 2048 x 830 W SSA Equivalent to ‘SOLEIL’
14th LIU-SPS Coordination Meeting 7
16 Tetrodes vs 2048 SSA
26 October 2011
Tetrodes tube costs over 20 years will be added : 20 years * 3/4 * 335 * 24 * 16 * 2 =
3’859’200 total hours With 20’000 hours per tube = ~ 200 tubes
SSA : + 20% to 25% additional transistors (not
module) Individual circulators are mandatory
Wall plug efficiency will be part of the adjudication HVPS included (Tetrodes) Losses in all SSA combiners, circulators and
loads included
1.7 MW
16 x128 x 830
WSSA
Final Tetrodes(gain = 12 dB)
SSA(Gain = 20 dB)
Nominal ratings
16 x 106 kW = 1700 kW
2048 x 830 W = 1700 kW
Maximum ratingsFor 1400 kW at cavity input
Maximum2 faulty tubes14 x 138 kW = 1932 kW
Maximum48 faulty modules2000 x 891 W = 1782 kW
Maximum ratingsDriver
16 x 8.7 kW 16 x 1.1 kW
16 x106 kW Tetrodes
14th LIU-SPS Coordination Meeting 8
SSA vs Tetrodes
26 October 2011
First contract : SSA Drivers Two options : 16 x 1.1 kW 16 x 1.1 kW x 8
Second contract : Finals Two options : 16 x 1.1 kW + SSA 16 x 1.1 kW x 8 + Tubes
KT too difficult and too long to be involved No SSA prototyping
DRs done (Drivers and Finals)
Two MS expected by end of 2011
Drivers IT March 2012
Finals IT September 2012 Taking into account Drivers
14th LIU-SPS Coordination Meeting 9
New RF building
26 October 2011
Only possible location is between two existing buildings (BA3 and BB3)
Maximum ‘RF’ foot print will be 2x450m2
Whatever the solution, SSA or Tetrodes, the same building
Some difficulties with BB3 transformers (Oil vs Cast resin; 12 Tons vs 24 Tons)
New place is being agreed Distance between BA3 air
ventilation and new building at its minimum
14th LIU-SPS Coordination Meeting 12
Transport area
26 October 2011
LSS3 -
LSS3 +
2011 2013
2360
14th LIU-SPS Coordination Meeting 13
LSS3 Tunnel integration : LS1 ?
26 October 2011
Three new cavity sections : ~ 3 years Measure Build new devices Proceed to power tests
New power couplers : ~ 4-5 years More power and shorter -> new design Prototyping and tests (resonant ring) Series and pre-conditioning of 24
couplers + spares
New amplifiers : ~ 5 years New building Long duration tests
Impossible to re-arrange cavities within LS1
Clean old cables in 314 and 321
Move pickups in 314 and integrate new kicker in 321
Install coaxial transmission lines
14th LIU-SPS Coordination Meeting 14
Draft schedule
26 October 2011
InstallBuild new hardware
Year 4Year 3Year 2Year 1 Year 5
BuildingServices
RF :
Building:
20172014201320122011 2015 2016 2018Year 6 Year 7
Tendering
Commissioning
Authorizations
Tunnel :
Build New hardwareInstallation phase 1
(pickups + dampers + EL + coax lines …)
Installation phase 2(cavities + pickups + CV + EL +
vacuum)
Cavities re-arrangement within a LS ( > 6
months)
Studies (amplifiers, couplers, cavities)
MS
Studies
Studies
Services