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3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 1/33
Preparation work for ALBA’s Closed-Orbit BPMs
3rd Libera Users Meeting – June 2009
Angel Olmos
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 2/33
OUTLINE
• ALBA OVERVIEW
• LIBERAS, SINCE 2nd USERS
MEETING
• ALBA FAST ORBIT FEEDBACK
BEAM POSITION MONITORS
RF CABLES
LIBERA ELECTRONICS
FOFB NETWORK
CORRECTION CALCULATION
POWER CONVERTERS
CORRECTOR MAGNETS
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 3/33
ALBA OVERVIEW
SLS type Booster and SR share the same tunnel
100MeV Thales LINAC
7 out of 32 beamlines on day one 1 Bending 1 Wiggler 1 SC-Wiggler 2 IV-Undulators 2 Apple II Undulators
Full energy 3GeVBooster
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 4/33
Schedule on August-06Jun-08 Building finishedNov-08 Booster commissioningMar-09 SR commissioning during 8 monthsOct-09 Beamlines commissioning
ALBA OVERVIEW
Schedule on April-09? Building not yet finished 12months delayJul-09 Cooling available 13 months delayOct-09 Booster commissioning 11 months delayMay-10 SR commissioning during 2 months 14 months delaySep-10 Beamlines commissioning 13 months delay
Beam for users, January 2011
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 5/33
Moving from University to ALBA site on April-09
ALBA OVERVIEWWhere are we now?
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 6/33
ALBA OVERVIEWWhere are we now?
LINAC pre-commissioning done on Summer-08
Turn-key system from Thales LTB and LiDia CELLSresponsability
Temporally electricity and cooling
Full commissioning TBD by fall-09
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 7/33
Service Area (electronic racks) and Experimental Hall finished
ALBA OVERVIEWWhere are we now?
Cooling and Air conditioning pending
Booster mechanical installation finished
SR 8 out of 16 sectors installed
Hutches and beamlines on the way
Cabling campaign has started
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 8/33
OUTLINE
• ALBA OVERVIEW
• LIBERAS, SINCE 2nd USERS
MEETING
• ALBA FAST ORBIT FEEDBACK
BEAM POSITION MONITORS
RF CABLES
LIBERA ELECTRONICS
FOFB NETWORK
CORRECTION CALCULATION
POWER CONVERTERS
CORRECTOR MAGNETS
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 9/33
LIBERAS, SINCE 2nd USERS MEETING
- Not much ... that’s why I’m showing you other stuff - Two units (not really used) during LINAC pre-commissioning (release 1.8)
LINAC synchronization problem
Peak detector on Device Server for position calculation
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 10/33
- Development of a generic Matlab GUI for 2.0
Used for Lab testing of new SW releases
LIBERAS, SINCE 2nd USERS MEETING
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 11/33
OUTLINE
• ALBA OVERVIEW
• LIBERAS, SINCE 2nd USERS
MEETING
• ALBA FAST ORBIT FEEDBACK
BEAM POSITION MONITORS
RF CABLES
LIBERA ELECTRONICS
FOFB NETWORK
CORRECTION CALCULATION
POWER CONVERTERS
CORRECTOR MAGNETS
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 12/33
ALBA FAST ORBIT FEEDBACK
Beam Position Monitors BPM readout electronics
FOFB network
Correctors Power Converters (PC)
Correctors magnetsCorrection CPUs
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 13/33
ALBA FAST ORBIT FEEDBACK
Beam Position Monitors BPM readout electronics
FOFB network
Correctors Power Converters (PC)
Correctors magnetsCorrection CPUs
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 14/33
BEAM POSITION MONITORSBeam Position Monitor block On chamber welded block including 4 button-type feedthroughs
Feedthroughs and BPM blocks tested during different stages at factory and at site
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 15/33
BEAM POSITION MONITORS
TDR head for reflection measurement 1- After manufacturing + Check manufacturing process + Calculate electrical behavior + Sort the buttons before welding
2- After welding on the BPM block + Prove that buttons are OK
3- After baking of the chambers + Final OK before delivery
Buttons measurements at factory (FMB)
Capacitance Dispersion < 1%
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 16/33
BEAM POSITION MONITORS
- Offset due to non perfect buttons and their placement in the block holes- Measured by external means. No wired method possible
S-paremeters measurement using a 4-ports network analyzer
BPMs Electrical Offset measurement at site
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 17/33
BEAM POSITION MONITORS
Processingof Tx coefficients
H/V offsets
Booster caseMax offset kept below 150 µm
BPMs Electrical Offset measurement at site
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 18/33
ALBA FAST ORBIT FEEDBACK
Beam Position Monitors BPM readout electronics
FOFB network
Correctors Power Converters (PC)
Correctors magnetsCorrection CPUs
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 19/33
RF CABLES
- First stage of semi-rigid PEEK dielectric cables being installed (as Soleil case)
Tight space between magnets makes impossible to plug any cable without a pre-stage
After chamber bakeout
Chamber movement on top of half-opened magnets
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 20/33
- RF cables from the semi-rigids to the Liberas are on the way of production
RF CABLES
- 4 Andrew CNT-240 cables in a hosepipe (Copy+Paste cheap version of thecommonly used Time Microwave LMR-240)
- 5000m of cable ordered. Assembly of SMA connector to be done by cabling company
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 21/33
LIBERA ELECTRONICS
- As said, not much has happened
- Release 2.0 installed on 3 units but not yet tested
- Last tested software release was 1.82 (the one on the installed units)
- Matlab GUI for 2.0 developed but not really used
- About TANGO device server ... still “forking” on others job
- Small pseudo-server developed for LINAC beam peaks analysis
- HW installation of 120 Storage Ring units on the Service Area done
- Only 12 of the 28 Booster units installed. The others kept for Lab testing
- Report of failures/interventions:
+ Hardware patch (30). Ethernet cable length...Corrected
+ Wrong voltages (8) ... not used on Libera
+ Out of specs on BCM (2)
+ Out of specs on TbT rms, low # ADCs (2)
+ Noisy channel (1)
+ PM buffer not triggered (1)
Not corrected
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 22/33
ALBA FAST ORBIT FEEDBACK
Beam Position Monitors BPM readout electronics
FOFB network
Correctors Power Converters (PC)
Correctors magnetsCorrection CPUs
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 23/33
Distributed architecture using 4 racks per sector (NT, Diagnostics, Controls, PCs)
FOFB NETWORK
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 24/33
Topology based on the use of network spare optical fibers to Sector 09
FOFB NETWORK
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 25/33
FOFB NETWORKPatch panel on Sector 09 will allow any combination of interconnections
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 26/33
ALBA FAST ORBIT FEEDBACK
Beam Position Monitors BPM readout electronics
FOFB network
Correctors Power Converters (PC)
Correctors magnetsCorrection CPUs
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 27/33
CORRECTION CALCULATION
- Original plan was to use MicroResearch reading board + distributed processing CPUs
- Pentium M running Linux 2.6 already installed but “under investigation”
- Not possibility of DMA on MicroResearch boards turns us to look for other solutions VMETRO? ... Tell me!!!!
- Distribution of data using Diamond Communication Controller internally agreed few weeks ago (discussions since who knows when)
- We will pay ITech for the integration job in our design
- Correction done with widely used SVD algorithm + PID controller
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 28/33
CORRECTION CALCULATION
- Even though we have 120 BPMs and their corresponding Libera electronics, only position data from 88 BPMs will be used for orbit correction Why?
- Representation of β functions vs. phase advance shows that some BPMs give almost the same information (same info = no info)
- BPMs are better distributed according the vertical plane were more precision is needed
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 29/33
ALBA FAST ORBIT FEEDBACK
Beam Position Monitors BPM readout electronics
FOFB network
Correctors Power Converters (PC)
Correctors magnetsCorrection CPUs
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 30/33
POWER CONVERTERSPower
converter
I/V transducer
ADC
PSIController
TxBoard
IPmodules
Carrier
cPCI Bus
RS232 service port
Electrical Optical
Optical protocol management
Commercial
Diamond
CorrectionCalculation
CPU
Optical
ALBA Controls rack
Correctos PCs rack
• Provide ±1mrad of DC deflection and ±40µrad @ 100Hz• Resolution of 18 bits• OCEM-Diamond PCs
Tested at factory but
not yet delivered
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 31/33
- Eddy currents on the vacuum chamber reduce the effect of the magnetic field at high frequencies fH=235
HzfV=1550
Hz
Horizontal Steering
Vertical Steering
- All delivered and on installation process
- Chamber thickness reduction to 2mm in the correctors
CORRECTOR MAGNETS
FOFB limiting factor
- ALBA sextupoles have extra coils to provide H/V beam steering
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 32/33
- Half of the Storage Ring BPMs still pending. Measurement goes together with installation
WHAT’S NEXT?
- LTB, BTS and BOOSTER BPMs electrical offset measured
- On site measurement of RF cables lengths (by cabling company) connec. assembly- All RF cables will be checked after installation one by one
- Test Libera release version 2.03 in the Lab (probably our production version)- Develop graphical utilities for Booster and Storage commissionings
- Take decisions about “sniffer” boards and processing CPUs
- Implement an small FOFB in the lab before final installation
- Receive and test the correctors power converters
LINAC full commissioning by Sep-Oct 09 Booster commissioning right after LINAC
Storage Ring commissioning May-10
3rd Libera Users Meeting – June 2009
Preparation work for ALBA’s Closed-Orbit BPMs 33/33
Preparation work for ALBA’s Closed-Orbit BPMs
3rd Libera Users Meeting – June 2009
Angel Olmos