AdL SUS/US Quad Controls
Conceptual Design
J. Heefner
7/12/2005
LIGO-G050318-00-C
AdL SUS Controls Conceptual Design
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Design Considerations
» AdL Controls Architecture has yet to be determined
– Controls block diagram based on scaling of existing LIGO controls and
architecture along with present DSpace controls
» AdL Controls ADCs, DACs, BIO, etc. have yet to be determined
– Requirements for ADC input noise based on recent testing of the
Analog Devices AD7679
– Requirements for DAC output noise based on experience with the
VME-based Frequency Devices DAC module
– Requirements for Binary I/O based on experience with VME, PCI and
PC104 based binary I/O modules
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This design primarily focuses on interface between
US and UK and the feasibility of implementing the
required design using LIGO-like controls.
LIGO-G050318-00-C
AdLIGO
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AdL Quad Controls Requirements
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The requirements for the system can be found in the Universal
DRD, T000053-03.
Highlights of electronics requirements:
» ADC– Input Voltage: +/-10 volts, differential
– Input Impedance: >1Kohm
– Input-referred noise: <200nV/√Hz for freq>100Hz, 200nV/√Hz @10Hz[1]
– Sample Rate: 16384 samples/second, nominal
– CMRR: >68dB at 100KHz
[1] The numbers for the input referred noise voltage of the ADC are based on tests
recently conducted on the Analog Devices AD7679 ADC. In these tests, it was
found that the input referred noise voltage of the ADC is less than 100nV/√Hz for
freq>10Hz, but the input range was +/-5 Volts.
LIGO-G050318-00-C
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Requirements cont’d
» DAC
– Output Voltage: +/-10 volts, differential
– Drive capability: 1Kohm load shunted by 1000pF capacitance
– Output-referred noise: 200nV/√Hz for freq>100Hz, TBD @10Hz[1]
– Sample Rate: 16384 samples/second, nominal
[1] Output noise voltage for DACs is based on measured output noise of
the present LIGO VME-based DACs manufactured by Frequency
Devices.
» Binary Out
–
–
–
–
LIGO-G050318-00-C
Switching Voltage: 5 volts minimum, 30 volts maximum
Switching Current: 1 amp maximum
Switching Time: < 1milli-seconds
On-state voltage: 2 volts maximum
AdLIGO
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Requirements cont’d
» Binary In
–
–
–
–
On-State voltage (logical 1): > 2 volts
Off-state voltage (logical 0): <0.8 volts
Maximum input voltage: TBD
Input impedance: >1Kohm
» Status Readback
– The state of a circuit must be capable of being read back to the
controlling hardware. The success of all binary instructions to a module
from CDS must be verifiable via a return signal derived from the
controlled hardware.
» Propagation of Signals
– Shielded-twisted pairs
– Coax
LIGO-G050318-00-C
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Requirements cont’d
» Test points- Internal and external test points required to aid in
debug, testing and verification
» Circuit Protection- Circuits must protect themselves against
reversed power, missing power supplies, shorts, opens, etc.
» Local Voltage Regulation
» Modularity and Commonality of parts
LIGO-G050318-00-C
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ISC/SUS Block Diagram
ISC AND SUS INTERFACE BLOCK DIAGRAM
Input Optics (IO)
&
Output Optics
RF Osc.
DETECTION
5 BSC Systems per IFO
6 HAM Systems per IFO
SUPERVISORY CONTROL
Timing System
Network
MODULATION
SUS/UK per IFO:
ETMx, ETMy (quads)
ITMx, ITMy (quads)
FMx, FMy (triple; folded
IFO only)
BS (triple)
ISC
φ
PSL
SEI
CONTROLLERS
PD
I/F
Mix
DETECTION
MODE
CONTROLLER
φ
PD
I/F
Mix
ACQUISITION
MODE
CONTROLLER
φ
PD
I/F
Mix
IO/IMC
SUS Local
Actuator
UPPER
MASS
ISC Global
Actuator
UIM
ISC Global
Actuator
12
ISC Global
Actuator
MODE
SWITCHING
ALGORITHM
SUS/US per IFO:
PRM (triple)
SRM (triple)
IMC2 (triple)
OMC (TBD)
Quad
SUS
Cabling from Drivers to
Vacuum Chamber FeedThroughs is SUS/US
Responsibility
PM
TM
4
4
I/F
Reflected
Memory?
SUS
ADC
GDS
SUS
CPU
I/F
Reflected
Memory?
Digital
I/O
SUS
DAC
SUS/US
Coil
Drivers (6)
AI
Filters
Local Control
DeWh Filters
Coil
Drivers (6)
AI
Filters
UIM
DeWh Filters
Coil
Drivers (6)
AI
Filters
Penultimate
DeWh Filters
Coil
Drivers (6)
AI
Filters
ESD
DeWh Filters
ES
Drivers
AA
Filters
Local Control
Wh Filters
OSEM
Sensor I/F
DAQ
Packaging & Channels
per Module are TBD
LIGO-G050318-00-C
12
5
SUS/UK
AdLIGO
Cabling from Vacuum
Chamber Feed-Throughs
to SUS I/F Connector &
Bracket is SEI
Responsibility
Packaging & Channels
per Module are TBD
Optical
Radio Frequency (RF)
Control/Monitor
Audio Frequency (AF)
Φ = Phase adjuster
PD = PhotoDiode
I/F = Interface
AI = Anti-Image Filter
AA = Anti-Alias Filter
DeWh = De-Whitening Filter
Wh = Whitening Filter
ES = Electro-Static
UIM = Upper Intermediate Mass
PM = Penultimate Mass
TM = Test Mass
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US-UK Interfaces and responsibilities
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Simply stated, the responsibilities for the UK and US
are:
» UK
–
–
–
–
OSEMs
OSEM LED drive and PD readback electronics
OSEM Coil Drive electronics
Electro-Static Drive electronics
» US
– All vacuum cabling and connectors required to propagate signals
to/from OSEMs and ESD actuators
– All external cable and connectors
– Power supplies
– All anti-alias, whitening, anti-image, dewhitening, etc to match to ADCs
and DACs.
LIGO-G050318-00-C
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US Responsibilities cont’d
» US responsibilities (cont’d)
–
–
–
–
LIGO-G050318-00-C
All ADCs, DACs, BIO required
All computing hardware and software required
All networking hardware and software required
Racks and subracks, TBD depending on location of equipment
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US to UK Interfaces
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OSEM to Vacuum cable
» US to provide all vacuum cable and the required female 9-pin
MicroD connector to mate to the OSEM.
» OSEM pinout per the ICD
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OSEM Satellite Module Output Connector Cable to
Vac. Flange
» US to provide 25 pin shielded, twisted pair cable and connectors
required to mate Satellite amp to vacuum flange.
» Pinout and gender of connectors per the ICD
LIGO-G050318-00-C
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US to UK Interfaces cont’d
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OSEM Satellite Amp to OSEM Drive Electronics
Cable
» US to provide 25 pin, shielded, twisted pair cable required to mate
OSEM Drive Electronics Module to Satellite Amp.
» Pinout and connector genders per the ICD.
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OSEM Drive Electronics to AdL Controls
» US to provide 25 pin, shielded, twisted pair cable required to
interface the OSEM Drive Electronics Module to US-provided AA,
whitening, AI, dewhitening, etc.
» Pinout and connector genders per the ICD
LIGO-G050318-00-C
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US to UK Interfaces cont’d
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ESD Actuator to Vacuum Cable
» US to provide all internal vacuum cables, feedthroughs and
connectors required for ESD.
» Cable types, etc. are TBD. Bob Taylor has sample and some
quotes from Accu-Glass and Coonar.
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ESD Amp to Vacuum Flange
» US to provide all coax cables required to connect ESD amp output
to vacuum flange
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ESD Amp to AdL Controls
» US to provide 15 pin, shielded, twisted pair cable required to
interface ESD Amp to US-provided AA, whitening, AI, dewhitening,
etc.
» Pinout and connector genders per the ICD
LIGO-G050318-00-C
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US to UK Interfaces cont’d
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Power Supplies
» US to provide all DC power required for UK modules and racks
» Power forms and requirements per the ICD
LIGO-G050318-00-C
AdLIGO
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AdL Quad SUS Controls Block
Diagram
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The controls for the L1 and L2
stages are each roughly equivalent
to what is presently required for a
single LIGO LOS.
A simple scaling using the number
of IO, FMs, etc. shows that each
quad is approx. equivalent to 4
LIGO LOS’s.
Present 40M linux CPUs handle 4
optics, so we could implement the
system with our existing controls
architecture, if needed. We could
also use a variation of some of the
PCI-based controls that has been
used recently.
The increased number of IO points,
etc. will need to be factored into any
AdL CDS design.
LIGO-G050318-00-C
Control BW= 0.1Hz-3Hz
M0
6 CH
FM
6 CH
Input Matrix
(6x6)
6 DOF
FM
6 DOF
Output Matrix
(6x6)
6 CH
FM
6 CH
FM
6 CH
Input Matrix
(6x6)
6 DOF
FM
6 DOF
Output Matrix
(6x6)
6 CH
FM
6 CH
R0
6 CH
From ISC Global
Controls
3 DOF
FM
L1
4 CH
FM
4 CH
Input Matrix
(4x3)
3 DOF
FM
+
3 DOF
Output Matrix
of Filters
(3x4)
12 FMs
4 CH
FM
4 CH
Control BW= 3Hz-30Hz
From ISC Global
Controls
3 DOF
FM
L2
4 CH
AdLIGO
FM
4 CH
Input Matrix
(4x3)
3 DOF
FM
+
3 DOF
Output Matrix
of Filters
(3x4)
12 FMs
4 CH
FM
4 CH
Control BW= 30Hz-300Hz
L3
From ISC Global
Controls
3 DOF
FM
3 DOF
Output Matrix
(3x5)
5 CH
FM
5 CH
Total Number of filter modules = 18+18+26+26+8=96
Total ADC inputs = 6+6+4+4=20
Total DAC outputs = 6+6+4+4+5=25
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AdL Quad SUS Controls Status
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Vacuum Cables and connectors
»
»
»
Prototypes for the vacuum
harnesses and cables are being
fabricated for use on the quad test
stand at CIT.
Additional cables and harnesses will
be fab’d for LASTI
AdL SEI is using the same types of
cables, connectors and conventions
as AdL SUS
LIGO-G050318-00-C
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Status cont’d
System layout and Design
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»
»
»
Cable diagrams per the ICD have been generated for a LASTI implementation
AA, whitening, AI, dewhitening TBD pending selection of ADC, DACs, BIO for LASTI
controls
AdL CDS architecture designs are in progress and should converge prior to LASTI need
date. If not we could implement with an interim solution– VME, PCI, etc. and LIGO-like
controls (not DSpace). These controls would then be integrated with the AdL SEI controls
and the existing LASTI infrastructure.
Vacuum Flange
Seismic Table
XXX?
UK SUS Satellite Module
UK OSEM Drive Electronics
CAB_?
XXX-XX
XXXX
Male
1B
2B
3B
4B
5B
6B
7B
8B
9B
10B
11B
12B
13B
14B
15B
16B
17B
18B
19B
20B
21B
22B
23B
24B
25B
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
11A
12A
13A
14A
15A
16A
17A
18A
19A
20A
21A
22A
23A
24A
25A
J2-1
J2-14
J2-2
J2-15
J2-3
J2-16
J2-4
J2-17
J2-5
J2-18
J2-6
J2-19
J2-7
J2-20
J2-8
J2-21
J2-9
J2-22
J2-10
J2-23
J2-11
J2-24
J2-12
J2-25
J2-13
Sensor A+
Sensor AST Coil A
FN Coil A
Sensor B+
Sensor BST Coil B
FN Coil B
Sensor C+
Sensor CST Coil C
FN Coil C
Sensor D+
Sensor DST Coil D
FN Coil D
+17V In
RTN
+17 Vin
RTN
-17V In
RTN
-17V In
RTN
Shield
OSEM A
OSEM B
OSEM C
OSEM D
Shield
FN Coil A
ST Coil A
LED-K A
LED-A A
PD-K A
PD-A A
FN Coil B
ST Coil B
LED-K B
LED-A B
PD-K B
PD-A B
FN Coil C
ST Coil C
LED-K C
LED-A C
PD-K C
PD-A C
FN Coil D
ST Coil D
LED-K D
LED-A D
PD-K D
PD-A D
J1-13
J1-25
J1-12
J1-24
J1-11
J1-23
J1-10
J1-22
J1-9
J1-21
J1-8
J1-20
J1-7
J1-19
J1-6
J1-18
J1-5
J1-17
J1-4
J1-16
J1-3
J1-15
J1-2
J1-14
J1-1
25A
24A
23A
22A
21A
20A
19A
18A
17A
16A
15A
14A
13A
12A
11A
10A
9A
8A
7A
6A
5A
4A
3A
2A
1A
Sh B
J2-1
J2-14
J2-2
J2-15
J2-3
J2-16
J2-4
J2-17
J2-5
J2-18
J2-6
J2-19
J2-7
J2-20
J2-8
J2-21
J2-9
J2-22
J2-10
J2-23
J2-11
J2-24
J2-12
J2-25
J2-13
Sh A
Sensor A+
Sensor AST Coil A
FN Coil A
Sensor B+
Sensor BST Coil B
FN Coil B
Sensor C+
Sensor CST Coil C
FN Coil C
Sensor D+
Sensor DST Coil D
FN Coil D
+17V Out
RTN
+17 V Out
RTN
-17V Out
RTN
-17V Out
RTN
Shield
Sh B
Sensor A Out+
Sensor A OutSensor B Out +
Sensor B OutSensor C Out+
Sensor C OutSensor D Out+
Sensor D OutCoil A In+
Coil A InCoil B In+
Coil B InCoil C In+
Coil C InCoil D In+
Coil D InTBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Shield
XXXX
AIR
Female
Male
Sh A
To AdL AA, AI, and Interface Electronics
J1-1
J1-14
J1-2
J1-15
J1-3
J1-16
J1-4
J1-17
J1-5
J1-18
J1-6
J1-19
J1-7
J1-20
J1-8
J1-21
J1-9
J1-22
J1-10
J1-23
J1-11
J1-24
J1-12
J1-25
J1-13
Female
25B
24B
23B
22B
21B
20B
19B
18B
17B
16B
15B
14B
13B
12B
11B
10B
9B
8B
7B
6B
5B
4B
3B
2B
1B
DB25
VACUUM
A13
A25
A12
A24
A11
A23
A10
A22
A9
A21
A8
A20
A7
A19
A6
A18
A5
A17
A4
A16
A3
A15
A2
A14
A1
V1
V14
V2
V15
V3
V16
V4
V17
V5
V18
V6
V19
V7
V20
V8
V21
V9
V22
V10
V23
V11
V24
V12
V25
V13
DB25
B1
B14
B2
B15
B3
B16
B4
B17
B5
B18
B6
B19
B7
B20
B8
B21
B9
B22
B10
B23
B11
B24
B12
B25
B13
A Shield
AdL OSEM
Micro D Male
Male
Female
A1
A14
A2
A15
A3
A16
A4
A17
A5
A18
A6
A19
A7
A20
A8
A21
A9
A22
A10
A23
A11
A24
A12
A25
A13
E1
E14
E2
E15
E3
E16
E4
E17
E5
E18
E6
E19
E7
E20
E8
E21
E9
E22
E10
E23
E11
E24
E12
E25
E13
1
6
2
7
3
8
4
9
5
A1
A6
A2
A7
A3
A8
A4
A9
A5
Shield
FN Coil
ST Coil
NC
NC
LED-K
LED-A
PD-K
PD-A
Female Micro
XXX?
B Shield
AdL OSEM
Micro D Male
1
6
2
7
3
8
4
9
5
B1
B6
B2
B7
B3
B8
B4
B9
B5
Shield
FN Coil
ST Coil
NC
NC
LED-K
LED-A
PD-K
PD-A
Female Micro
XXX?
C Shield
VACUUM FEEDTHRU
XXX?
UK OSEM Drive
DB25
Female
XXXX
SHIELDED 25 COND
B Shield
VAC CABLE 25 PIN
AdL OSEM
Micro D Male
A Shield
C1
C6
C2
C7
C3
C8
C4
C9
C5
SHIELDED 25 COND
1
6
2
7
3
8
4
9
5
Shield
FN Coil
ST Coil
NC
NC
LED-K
LED-A
PD-K
PD-A
Female Micro
XXX?
D Shield
AdL OSEM
Micro D Male
1
6
2
7
3
8
4
9
5
D1
D6
D2
D7
D3
D8
D4
D9
D5
Shield
FN Coil
ST Coil
NC
NC
LED-K
LED-A
PD-K
PD-A
Female Micro
XXX?
XXX?
LIGO-G050318-00-C
AdLIGO
16
Unresolved Issues
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Monitors
» In LIGO we had auxiliary monitors for:
– Coil driver output current, rms current, output voltage, current fault
– OSEM PD voltage
– Many others- We tended to err on the side of overkill
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Mode Switches and readbacks for coil drivers and ESD
» In LIGO we had switches for:
– Coil Driver Run/Acquire, Coil Driver Test input enable, Coil Driver enable
– Whitening and dewhitening enable
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Test inputs and test monitors
AC vs. DC drive of ESD
Interlocks and watchdogs
LIGO-G050318-00-C
AdLIGO
17