SPS Beam Position Monitors: MOPOS Front-End Electronics Jose
Luis Gonzalez BE/BI 22/11/2013
Slide 2
Outline SPS Multi Orbit POsition System (MOPOS) System overview
Front-End Architecture Rad-tol requirements, design and status
Possible impact and mitigation Long-term radiation test planning
and strategy BI Review on Radiation Development and Testing - J.L.
Gonzalez - 22/11/20132
Slide 3
BA2 BA3 BA4 ECA4 BA5 ECA5 BA6 BA7 BA1 TT40 TT41 (CNGS) TI8
(LHC) TI2 (LHC) TT20 (SPS NA) TT66 (HiRadMat) TT60 TT10 (PS) SPS
Multi Orbit POsition System (MOPOS) MOPOS Front-End 216 BPMs in the
tunnel Exposed up to 100 Gy/y Optical transmission MOPOS Read-Out
In surface buildings (BA1...6) BI Review on Radiation Development
and Testing - J.L. Gonzalez - 22/11/20133
Slide 4
MOPOS: Simplified Block Diagram BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/20134 LogAmps
Serial ADC 10MHz Serial ADC 10MHz Pickup U D R L x y FPGA Optical
Link @ 2.4 Gb/s FPGA Digital Board Read-Out Board Timing
Distribution VME Interface SPS Tunnel Front-End CHASSIS Software
Radio Frequency Analogue Board
Slide 5
Front-End Architecture BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/20135
Slide 6
Analogue Board Log-Amps AD8302 ADL5519 MAX2016 ADC Drivers
ADA4932-2 THS4521 Voltage regulators LT1963AEQ TL1963-KTT
LP3875-ADJ TPS7A4501-KTT BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/20136
Slide 7
PSI Irradiation Facilities (PIF) BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/20137 Energy: 230
MeV Flux: 1.6 10 8 p/cm 2 s Fluence: 1.874 10 12 p/cm 2 Current:
4.7 nA Collimator: 58 mm (Si) Dose/run: 1 kGy - 10 5 rad/3.5 h
Slide 8
PSI: Analogue Test Setup BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/20138
Slide 9
LogAmp ADL5519 & ADC-Drivers BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/20139
Slide 10
Analogue Components LogAmps AD8302: Analog Devices, Dual Log
Amps ADL5519: Analog Devices, Dual Log Detector MAX2016: Maxim,
Dual Log Detector ADC Drivers ADA4932: Analog Devices, Differential
ADC driver THS4521: Texas Inst., Differential ADC driver These
components have been qualified at PSI (TID 1kGy) BI Review on
Radiation Development and Testing - J.L. Gonzalez -
22/11/201310
Slide 11
Voltage Regulators BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/201311
Slide 12
Analogue Components Low Dropout Regulators LT1963A: Linear
Tech., LDO Regulator (1/3 bad) LP3875: National Semi., LDO
Regulator (3/3 bad) TL1963A: Texas Inst., LDO Regulator TPS7A4501:
Texas Inst., LDO Regulator These components have been qualified at
PSI (TID 1kGy) BI Review on Radiation Development and Testing -
J.L. Gonzalez - 22/11/201312
Slide 13
Optical Transceivers Test Board Commercial SFP Modules
Double-fiber SFP FTTX Technology: FT3A05D Single-fiber,
bidirectional Ligent: LTE5350-BC and LTE3550-BC Lightron:
WSP24-313LC-I5A and WSP24-513LC-I3A Source Photonics:
SPL-35-GB-CDFM and SPL-53-GB-CDFM Yamasaki: 541315L-15B and
541315L-15Y BI Review on Radiation Development and Testing - J.L.
Gonzalez - 22/11/201313
Slide 14
PSI Test Setup Energy: 230 MeV; Current: 2nA (~3.5 rad/s) or 3
nA (~6 rad/s) ; Collimator: 58 mm (Si) TID goal: 1 kGy - 10 5
rad/component Measurements every second: Communication rate: 1.25
Gb/s 32-bit word sent from the controller board (FPGA, Spartan6)
Electrical loopback on the SFP Board Cross-check between sent and
received 32-bit word 2 SFP modules tested in parallel For each
channel, 3 counters are enabled: single bit errors, multiple bit
errors, total errors BI Review on Radiation Development and Testing
- J.L. Gonzalez - 22/11/201314
Slide 15
Measurements Best SFP Parts BI Review on Radiation Development
and Testing - J.L. Gonzalez - 22/11/201315
Slide 16
SFP Test Results Summary Ligent and Yamasaki components are
very sensitive to the radiation level @ PIF Source-Photonics
components are more resistant but with many error bursts FTTX and
Lightron components behave much better but still generate many
error bursts For the MOPOS Front-End: decision to use the Versatile
Transceiver (VTRx) developed at CERN TESTS to be done with long
transmission fibres (up to 1.5 km) BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201316
Slide 17
CERN VTRx Radiation Specs Versatile Link Technical
Specification, rev. 2 [J. Troska et al.] BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201317 Tolerance
Level Dose and fluence (20 Mev neutron equivalent) Calorimeter 10
kGy 5 x 10 14 n/cm 2 Tracker 500 kGy 6 x 10 15 n/cm 2
Slide 18
Short-Term Strategy Current Front-End Digital PCB (vers. 1)
Analog Devices Octal 14-bit ADC: AD9252 Xilinx Spartan6 FPGA
(Triplication, Hamming Code Correction) CERN VTRX Optical
Transceiver Will allow the first functional tests of the MOPOS
system in 2014 (both hardware and software) BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201318
Slide 19
Long-Term Strategy: Radiation Tests for ADC & Digital Parts
Beam Tests Conditions: equivalent to PSI Test Beams (230 MeV; TID:
1 kGy) In our section there is no manpower available in 2014 BI
Review on Radiation Development and Testing - J.L. Gonzalez -
22/11/201319
Slide 20
Analogue/Digital Converters 4065Msps LVDS Serial ADC AD9252:
Analog Devices Octal 14-bit AD9259: Analog Devices Quad 14-bit
LTM9009: Linear Tech. Octal 14-bit LTC2171: Linear Tech. Quad
14-bit ADS5294: Texas Inst. Octal 14-bit ADS6442: Texas Inst. Quad
14-bit BI Review on Radiation Development and Testing - J.L.
Gonzalez - 22/11/201320
Slide 21
ADC Radiation Tests (H. Takai/BNL) BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201321
TWEPP2013
Slide 22
Digital Components Low Voltage and LVDS Buffers 74VCX162244:
Fairchild 16-bit Buffer/Line Driver 74ALVCH162244: Texas 16-bit
Buffer/Line Driver 74VMEH22501: Texas 8-bit Bus Transceiver
FIN1108: Fairchild 8-port LVDS Repeater BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201322
Slide 23
Digital Components: FPGA SERDES integrated SRAM technology
Xilinx SPARTAN6 (currently used) Test of the first board prototype:
SPS 2014 Altera Stratix V Cycling Redundancy Check of FPGA
configuration Possibility to get the corresponding ASIC External
SERDES FPGA + GBT project SRAM if failures are mostly related to
SERDES Antifuse Microsemi Axcelerator AX2000 Flash RAM for SRAM
configuration M25P128 Numonyx BI Review on Radiation Development
and Testing - J.L. Gonzalez - 22/11/201323
Slide 24
THANK YOU FOR YOUR ATTENTION! BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201324
Slide 25
Spare Slides: PSI Radiation Tests BI Review on Radiation
Development and Testing - J.L. Gonzalez - 22/11/201325
Slide 26
PSI: SFP Radiation Setup BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/201326
Slide 27
SFP Tests: FTTX FT3A05D BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/201327
Slide 28
SFP Tests: Lightron I3A BI Review on Radiation Development and
Testing - J.L. Gonzalez - 22/11/201328
