vsc seminar - indico...pirani/penning gauge pkr251 piezo gauge huba 680.99413 nikolaos...
TRANSCRIPT
Vacuum, Surfaces & Coatings Group
Technology Department
VSC Seminar
Radiation-Tolerant design of gauge electronics in the LHC ARCs
Nikolaos Chatzigeorgiou
TE-VSC-ICM
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 2
1. Some numbers of gauges in the DS/ARCs
2. Motivation for RadTol design and goals
3. New system architecture and RadTol electronics
RadTol Penning LOG stage
RadTol 4-20mA transmitter stage
4. Summary
5. 2018 work
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 3
• Insulation vacuum for Magnets ~ 10E-7 mbar
• Insulation vacuum for QRL ~ 10E-7 mbar
• Beam vacuum ~ 10E-9 mbar
Pressure monitoring
Leak detection or pumping group problem
Protection of the cryostat (Alarms to CRYO – Pirani/Piezo)
Active gauges Penning E-9 #Head: IKR251, gauge: PKR251
Pirani #Head: custom, Gauge: PKR251
Piezo #Huba 680.99413
DS 16 16 48
ARC 312 312 120
Total 328 328 168
Penning headIKR251
VRJGE Pirani headCustom CERN
Pirani/Penning gaugePKR251
Piezo gaugeHuba 680.99413
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 4
Max 1km
• Gauges are distributed along the 3km DS/ARC
• Group of 3 gauges for the sectors (Piezo, Pirani, Penning) covers whole pressure range
• Group of 2 gauges for the pumping groups and beam vacuum (Pirani, Penning)
• Front-end electronics inside VRJGE convert the signal from gauges to analog 0-10V
• The analog signal reach a PLC, which is located in a safe service area (Alcove)
• The maximum distance between PLC and VRJGE is 1km
• PLC converts the analog 0-10V to pressure and provides alarms to CRYO (Piezo, Pirani)
Q D
Gauge electronics
ND100 cable
D D Q D D D
PLC
RE
local cables of gauges
Piezo, Pirani, Penning gauges
VRJGE
Example mid-arc left side of IP
Q D D D Q D D D
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 5
LHC environment is changing (beam energy, 25ns operation, luminosity, etc.)
5
Run 1+22009-2018
Run 1+2+32009-2022
Run 1+2+3+HL-LHC2009-2035
30 to 90 Gy ARC
200Gy in DS
Mitigation through RadTol development 500 Gy is our Goal (safety factor>2 for DS) RadTol version not supported by industry Piezo, Pirani, Penning front-end electronics re-design
Data from Radiation calculation group
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 6
Compatibility Performance
Maintenance Architecture
R2E
Design goals are driven mainly by R2E but we can have other added values
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 7
System
RadTol
Transmission
Modular
Maintenance
Safety
Redundancy
Penning
Compatibility
•IKR070 (E-11)
•PKR251 (E-9)
Pirani
Performance
Calibration
Compatibility
•TPR018 gauge
•PKR251 gauge
Piezo
Robust supplies
Power Supply
Redundancy
Linear PS
Robust
Local for all electronics
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 8
• Mini-rack bellow the 1st or 2nd dipole after quadrupole
• Mini-rack will house a 3U euro-crate
• Each gauge will have a dedicated RadTol card
• Modular cards – hot replaceable
Q D
Multi-conductor cable
D D Q D D D
PLC
Alcove
Local gauge cables
Piezo, Pirani, Penning gauges
Example mid-arc left side of IP
Patch Panel
Mini rackFront-end electronics
ND100
4-20mA
ctrls
VRJGE
Q D D D
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 9
PenningE-9 mbar
6TE
SHV
0-10V
6TE
PenningE-11 mbar
0-10V
LEMO triax
6TE
Pirani
0-10V
Burndy 4 female
HVAC
ATM
6TE
Piezo
0-10V
Burndy 4 male
±13.5V
By-PassValve
6TE
+24V
84 TE
ProfibusTermination
6TE
Redundant Power Supply±24V
18TE
Supply 1±24V
Supply 2±24V
Dedicated front panel for each card – type of gauge
Presently we have up to 7 gauge electronics
Can fit up to 11 front-end cards + the power supply
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 10
Simple - Linear Power supply provides regulated ±24V to the backplane
Enough power to supply the whole euro-crate – up to 11 measuring cards
Board will be ready early 2018
Dry, Temperature, CO60, CHARM tests
Redundant Power Supply±24V
18TE
Supply 1±24V
Supply 2±24V
Mains UPS230VAC
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 11
6TE
Piezo
0-10V
Burndy 4 male
±13.5V
Supplies the active piezo with ±13.5V
Converts the gauge output to 4-20mA
Full board early 2018
Dry, Temperature, Vacuum, CO60 and CHARM tests
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 12
6TE
Pirani
0-10V
Burndy 4 female
HVAC
ATM
Compatible with passive and active Pirani gauge
Full card early 2018
Dry, Temperature, Vacuum, CO60 and CHARM tests
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 13
PenningE-9 mbar
6TE
SHV
0-10V
6TE
PenningE-11 mbar
0-10V
LEMO triax
Compatible with E-11 and E-9 mbar gauges
Full board by end of 2017
Dry, temperature, Vacuum, CO60 and CHARM tests
LOG and Transmitter stage tested separately:
LOG stage accumulated 500 Gy
Transmitter (4-20mA) accumulated 500 Gy
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 14
Design Stages Active components PSI test status
Power Supply • Transformer• Filtering• Regulation
• μA7824• MC7924CTG
Piezo • Regulation• Transmission
• μA7815• LM7915CT• LM317• TPS7A3001
Pirani • Wheatstone bridge• Conditioning• Regulation• Transmission
• OP2177ARZ • 2N3019• BC850C
• μA7815• LM7915CT• SM6T39CA
Penning • Regulation• Royer oscillator• Conditioning• LOG amp• Transmission
• μA7815• LM7915CT• LM317• 2N3019• OP2177ARZ
• BC850C• OPA128LM• 2N3811• LT1029CZ• PAD1
• Standardization of stages and components across different design – reduction of PSI campaigns
• 2 active components left for PSI tests in 2018
• Some auxiliary and/or backup will be tested in 2018
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 15
• Characterization through current sources• Current measurement from 3pA to 100uA – 8 decades • Error is 1% for 6 decades - 2% for 10pA – 8% for 1pA
1.E-11
1.E-10
1.E-9
1.E-8
1.E-7
1.E-6
1.E-5
1.E-4
1E-12 1E-11 1E-10 1E-9 1E-8 1E-7 1E-6 1E-5 1E-4
Pre
ssu
re [
mb
ar]
Input Current [A]
IKR070: Measured Pressure vs Input Current
Pressure vs Input Current
𝑃 = 𝑎𝐼𝑖𝑛0.8
𝑎 = 0.017 ൗ𝑚𝑏𝑎𝑟𝐴
0%
2%
4%
6%
8%
10%
12%
1E-13 1E-12 1E-11 1E-10 1E-09 1E-08 1E-07 1E-06 1E-05 1E-04 1E-03
Erro
r %
I [A]
abs (Δ I/I), f(I), room temperature
Error from Ib1 - OPA128LM Error from Ib2 - OP2177
Error from Is1 - Is2 Theoretical Total Error
Measured Total Error (4 samples)
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 16
Error below 2% for all range – 4% for 1E-11 mbar
Acceptable temperature response between 15 – 30 Degrees C
4 LOG stages in 3 runs (total 3 weeks) at CHARM
10pA (2.79E-11 mbar) sourced to each LOG
All 4 LOG stages accumulated 500Gy with small degradation
0%
1%
2%
3%
4%
5%
6%
7%
1E-11 1E-10 1E-09 1E-08 1E-07 1E-06 1E-05
ΔP
/ P
%
Pressure [mbar]
abs(ΔP/P), f(P), room temperature
Measured Total Error (4 samples) Theoretical Error
0%
10%
20%
30%
40%
50%
60%
70%
80%
15 C 20 C 25 C 30 C 35 C
ΔP
/P %
Temperature [°C]
abs (ΔP/P), f(T)
1.0E-11 2.7E-11 1.7E-10 1.1E-09 6.8E-09
4.3E-08 2.7E-07 1.7E-06 1.1E-05
0 100 200 300 400 500
1E-11
2E-11
3E-11
4E-11
5E-11
6E-11
7E-11
8E-11
9E-111E-10
Fixed pressure readout change with absorbed dose
0Gy2.79E-11mbarPre
ssure
(m
bar)
Dose (Gy)
500Gy 3.4E-11mbar
Pressure curves
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 17
-0.05
0
0.05
0.1
0.15
0.2
0.25
0 1 2 3 4 5 6 7 8 9 10
Erro
r %
Input Voltage [V]
(Δ I/I ), f(V), room temperature
Channel 1, 2 - 0.1% Channel 3, 4 - 0.01%
Characterization with precision voltage sources
Error below 0.05% for 0.01% and 0.2% for 0.1% channels
5 transmitter stages in 3 runs (total 3 weeks) at CHARM
Input voltage ramp of each transmitter (0 – 10V) for 4-20mA output
All 5 samples accumulated 500 Gy – Analysis on-going!
On-going analysis
0 100 200 300 400 500
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
I/
I (%
)
Dose
0V - R0.1%
1V - R0.1%
5V - R0.1%
10V - R0.1%
0 100 200 300 400 500
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
I/
I (%
)
Dose
0V - R0.01%
1V - R0.01%
5V - R0.01%
10V - R0.01%
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 18
Schedule Activity 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
• Task 1:Active gauges in the arcs
Study, simulations, components survey
DS+ARC Design & Proto
DS+ARC Dry & temperature tests
DS+ARC PSI COTS rad tests
DS+ARC CC60 modules rad tests
DS+ARC CHARM modules rad tests
DS+ARC CHARM system rad tests
DS series (16 Pirani/Penning; 48 Piezo)
DS rad test
DS installation
DS commissioning
ARC series
ARC rad test
ARC installation
ARC commissioning
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 19
• New system architecture designed for fast and safe interventions
• Improved transmission guarantees signal integrity over long distances
• New electronics are compatible with different gauges (passive, active)
• Tolerance to radiation up to 500Gy with small degradation has been fully tested for:
Penning LOG stage (EDMS 1871072)
Transmitter 4-20mA stage (on-going analysis)
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 20
• Finish designs for Pirani, Piezo, Power supply early 2018
• Mechanical integration – backplane PCB
• ECR request for mini-racks
• Dry and temperature tests following real vacuum tests in XHV lab (30/1-034)
• CHARM system tests for 500 Gy TID classification
• Manufacture electronics for DS series
• LS2 installation and commissioning planning
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 21
Group VSCPaulo Gomes; Gregory Pigny, Pawel Krakowski, Andre Rocha, Rodrigo Ferreira, Jorge Fraga, Berthold Jenninger and Sophie Meunier.
R2EMarkus Brugger (EN-EA); Ruben Garcia Alia (EN-STI-FDA).
EN-STI-ECESalvatore Danzeca; Gilles Foucard; Paul Peronnard; Georgios Tsiligianis
TE-CRG-CIJuan Casas-Cubillos; Nikolaos Trikoupis.
Nikolaos Chatzigeorgiou, CERN – TE/VSC VSC Seminar 28.11.2017 22