pls corrector ps upgrade and orbit measurement using dbpm - … · 2006. 6. 23. · local ethernet...
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Pohang Accelerator LaboratoryPOSTECH
EPICS collaboration meeting on 6~7 October 2005
Pohang Accelerator Laboratory
Kiman Ha, J.H Kimhkm@postech.ac.kr
PLS Corrector PS Upgrade and Orbit measurement using DBPM
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Pohang Accelerator LaboratoryPOSTECHEPICS Collaboration Meeting 2005
Outline
-Status of Digital Corrector power supplies hardware-Status of PS control system-Data measurements-Orbit measurements using Libera tryout DBPM-Summary
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Pohang Accelerator LaboratoryPOSTECH
Goals of orbit feedback
-Storage ring : 2.5 GeV 180 mA
-Orbit feedback operation using digital power supplies -Orbit stability with feedback (RMS)
- Short term (1 hour) : < 1 μm- Long term (12 hours) : < 3 μm
-Total 70 sets V type replaced and 32 V correction PS’s are involved for orbit feedback
-98 BPMs used for beam position measurement
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Pohang Accelerator LaboratoryPOSTECH
Present PS upgrade status
-PS Upgrade statusAugust and September 2005, 70 vertical PS were
replaced to new digital controlled typeSeptember 2005, Hardware and Control system
CommissioningSeptember 28 2005, User run startingTotal budget : 650,000$ (Not include Control System)
-DBPMNovember 2003, Installed DBPM-2 from I-Tech August 2005, One of DBPM Libera tryout version
installed for TBT, damping time, RMS and MEAN orbit data measurement
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Pohang Accelerator LaboratoryPOSTECH
Analog- Digital-Converter
2 ADC,16 Bit, 50 kHz
4 ADC, 12 Bit
2 DAC for debugging
DSP-controller incl. FPGA
6 Bit Digital Out
8 bit Digital Input
1 RS232
1 Fiber optics
Euro card size
Shark DSP
Shark links on backplane
Digital Control Unit from DIAMOND
- Originally developed by PSI EE group- DIAMOND has full-license
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Pohang Accelerator LaboratoryPOSTECH
Installed PS in Shed #1 and Inside view
VME IOC CrateBergoz BPM
Optical fiber for EPICS interface
DCCT &IO interface board
1
2
3
4
5
6
VMIC-3122EVRVIPC664
MVME5110-400 MHz
Digital PS and Control Rack
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Pohang Accelerator LaboratoryPOSTECH
Power Supplies IOCs
Control Network
SBC ADC EVR
#1 VME based IOC
Same configurations #2 to #12 IOC
W/S PC Windoswor LINUX
SBC: MVME5110-400 MHzADC:VMIVME-3122
6
1 1
B
2
x
1 x
4x
x
1x
Ern
e
A
2
x
8
2
x
x
1 x
x
1 x
5
7
1
Local Ethernet HUB 3COM-24Port
H V
Corrector PSController
Bergoz BPM Module
EPICS OPIs
MVME5110
+-10V analogX,Y,AGC
Event GeneratorRF 500.082MHzAC 60Hz
Clock and Triggerto BPM, CMPS, ADC
2KHz ~ 40KHz
2’nd Ethernet port
Fiber optics
VIPC664-TM
Digtal PS
vxWorks 5.5.1base 3.13.9CPU load 48% ~ 52%PS scan rate : 0.1 secADC 32CH : 0.01 sec
IOC internals:
Fiber
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Pohang Accelerator LaboratoryPOSTECH
IOC and PS configuration
VMECPU
Carrier module TM module
PSIP-A
IP-B
IP-C
IP-D
Optical fiber link
MVME5110
VIPC664-TM
Event trigger
CH1
CH2
PSPS 8PS 8
PS 2PS 2
EVR
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Pohang Accelerator LaboratoryPOSTECH
Control hardware
TM
Fiber I/O port
Industry Pack Carrier VME64x 4 slot boardsGreenspring
Vipc664Hytec 8002
Industry Pack Module for 2 power supplies
VME64x Transition modulefor 8 power supplies
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Pohang Accelerator LaboratoryPOSTECH
Web monitoring
10 min
4 days
-PPC linux
-mySQL
-GUNPLOT
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Pohang Accelerator LaboratoryPOSTECH
DPS Feedback operations - 1
V*10 is Amps
Beam current
Digital SettingADC input Readback
Current setting and ADC input readback by feedback operation40 Hours
Beam dump
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Pohang Accelerator LaboratoryPOSTECH
Step response test
55.0A55.0001
55.0002
+55.0003
55.000555.0004
55.0A
Step response @55(A), 100uA step(1ppm)
1ppm @ full range
V*10 is Amps
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Pohang Accelerator LaboratoryPOSTECH
DPS Feedback operations - 2
Operating output currents of vertical corrector
0 1000 2000 3000 4000 5000 6000 7000 800075.9
75.91
75.92
75.93
75.94
75.95
75.96
75.97
P oint
[A]
P 08C V 1
Current setting and DCCT output readback by feedback operation
SETTING
READBACK
0 1000 2000 3000 4000 5000 6000 7000 8000-23 .94
-23 .93
-23 .92
-23 .91
-23 .9
-23 .89
-23 .88
P o in t
[A]
P 0 8 C V 2
SETTING
READBACK
Delta is offset
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Pohang Accelerator LaboratoryPOSTECH
Timing of DBPM for data sampling
=1.068 MHz
A,B,C,D
Ethernet
sf
0 1000 2000 3000 4000 5000 6000 7000 80002.675
2.68
2.685
2.69
2.695
2.7
2.705
2.71
2.715Y Position (TBT, 10kHz)
point
mm
Yrms-TBT= 0.0039583um y mean y stdYrms-10kHz= 0.0031294um
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Pohang Accelerator LaboratoryPOSTECH
Turn by turn data measurement
0 1000 2000 3000 4000 5000 6000 7000 80002.675
2.68
2.685
2.69
2.695
2.7
2.705
2.71
2.715Y Position (TBT, 10kHz)
point
mm
Yrms-TBT= 0.0039583um y mean y stdYrms-10kHz= 0.0031294um
FIR filter TBT to 50 kHz
Upper: TBT data,Lower: Filtered data
1000 2000 3000 4000 5000 6000 7000 8000
2.305
2.31
2.315
2.32
2.325
2.33
2.335
2.34
2.345Y Position
[us]
[mm
]
TBT(1:8192,3:4)(:,1)FIR 50 kHz(1:8192,3:4)(:,2)
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Pohang Accelerator LaboratoryPOSTECH
Damping time measurement
500 1000 1500 2000 2500 3000 3500 4000 4500 5000
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
[us]
[mm
]
X position damping time
500 1000 1500 2000 2500 3000 3500 4000 4500 50000
0.5
1
1.5
2
2.5
3
3.5
4Y position damping time
[us]
[mm
]
1ms
Injection
[mm]
[mm]
[us]
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Pohang Accelerator LaboratoryPOSTECH
Response matrix measurement
100 150 200 250 300 350 400 45016
17
18
19
20
21
22Response Matrix (RMS)
Point
[um
]
0 100 200 300 400 5002.4
2.5
2.6
2.7
2.8
2.9
3
Response matrix (MEAN)
point
[mm
]
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Pohang Accelerator LaboratoryPOSTECH
Summary
-Digital Power SuppliesThe PLS orbit feedback operation is based on EPICS
control system.70 of 19-bit digital controlled PS and there control
systems working very well.Satisfactory operation result used digital controlled PS
-DBPM LiberaTesting with Libera DBPM for orbit measurementsWe need replace full access version software for more
fast and widely applications (Tryout versions are just opened HTTP for access data, It takes 15 seconds of 8,000 data samplings )
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Pohang Accelerator LaboratoryPOSTECH
Planes
Digital Power Supplies:Just performance monitoring
Digital BPM:Full accessible version driver install and porting EPICS
IOC and optimizationSingle bunch testing for LINAC
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Pohang Accelerator LaboratoryPOSTECH
Acknowledgement
I am gratefully thank to :
F.Jene, L. Tener and Andreas in PSITony dobing, Mark Heron in DIAMOND
for the many advice and support during the work.
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