status of id sonar developments greg hallewell centre de physique des particules de marseille...
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Status of ID sonar developments
Greg Hallewell Greg Hallewell
Centre de Physique des Particules de MarseilleCentre de Physique des Particules de Marseille(CNRS/IN2P3)(CNRS/IN2P3)
ATLAS ID week, CERN, October 28th - November 1st 20131
R. Batesa, M. Battistinb, S. Berryb, J. Berthoudb, A. Bitadzea, P. Bonneaub, J. Botelho-Direitob, N. Boussonc, G. Boydd, G. Bozzab, E. Da Rivab, C. Degeorgee,
C. Deterref, B. DiGirolamob, M. Doubekg, D. Giugnib, J. Godlewskib, G. Hallewellc, S. Katuninh, N. Langevinc, D. Lombardb, M. Mathieuc, S. McMahoni, K. Nagaij, E. Perez-Rodriguezb, D. Robinsonk, C. Rossil, A. Rozanovc, V. Vacekf, M. Vitekf
and L. Zwalinskib
a SUPA School of Physics and Astronomy, University of Glasgow, G62 7QB, UK b CERN, 1211 Geneva 23, Switzerlandc Centre de Physique des Particules de Marseille, Aix-Marseille Université, CNRS/IN2P3, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France d Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019, USA e Indiana University, Department of Physics, 727 East 3rd St. Bloomington, IN 47405, USA f Deutsches Elektronen-Synchrotron , Notkestraße 85, D-22607 Hamburg, Germanyg Czech Technical University in Prague, Department of Applied Physics, Technická 4, 166 07 Prague 6, Czech Republich B.P. Konstantinov Petersburg Nuclear Physics Institute (PNPI), 188300 St. Petersburg, Russiai Rutherford Appleton Laboratory - SFTC, Harwell Oxford, Didcot, OX11 OQX, UKj Department of Physics, University of Innsbruck, Innrain 52, 6020 Innsbruck, Austriak Department of Physics and Astronomy, Cavendish Laboratory, J.J. Thompson Avenue, University of Cambridge, CB3 0HE, UK l Department of Mechanical Engineering - Thermal Energy and Air Conditioning Division, Università degli Studi di Genova Via All'Opera Pia 15a - 16145 Genova, Italy
ATLAS ID week, CERN, October 28th - November 1st 2013 2
Sonar (speed of sound) measurements used for the analysis of binary gas mixtures
of dissimilar molecular weight, including C3F8/N2, C3F8/C2F6 & C3F8/air
in the ATLAS pixel & SCT cooling system – soon also CO2/N2 for the IBL
ATLAS ID week, CERN, October 28th - November 1st 2013
Sound transit times measured in opposing directions in flowing gas provide simultaneous
flow measurement in the same instrument
Precisions: (<0.1%)C3F8/N2 ~4.10-5: C3F8/(25%)C2F6 ~3.10-3:C3F8/(010%) air ~ 10-3: (<0.1%)CO2/N2 ~ 5.10-4 (expected)
3
Using Polaroid/SensTech model 6000 camera/robotics 50 kHzultrasonic transducer.
May need to go to acoustic frequencies (1-4 kHz) & conventional loudspeakers
for gases with high CO2 content
Custom microcontroller-based electronics sends sound pulses & measures transit time
in two opposing directions, along with process gas temperature & pressure
ATLAS ID week, CERN, October 28th - November 1st 2013 4
Environmental N2 envelope gas from pixel & SCT detectors is aspirated into sonar tubes for
sound velocity analysis.
(instruments & SCADA computer running PVSS in USA15 gas room)
ATLAS ID week, CERN, October 28th - November 1st 2013 5
NO
NC
P (01 barabs)
Vacuum pump(membrane)
P (0 1 barabs)
P (0 1 barabs)
P (0 1 barabs)
Pixel
Pix
el
SC
T
SCT
TR
T/I
BL
TRT
To mobileGC
Vacuum pump(membrane)
Vacuum pump(membrane)
Vacuum pump(membrane)
To air extraction system
Future Acoustic
frequencysonar
(1-4 kHz)
IBL
To air extraction system
To air extraction system
To air extraction system
To mobileGC
To mobileGC
ATLAS ID week, CERN, October 28th - November 1st 20136
7
Vac pump driver - version 2
Valve driver
Sonar chassis (sonar tube 1+ analog inputs, temp + press.)
Sonar chassis (tube 2- sonar only, no A.I.)
Dell Poweredge 1950 on ATLAS general network will soon be replaced by new
R610 server on ATCN network(already installed:
OS uploaded via ATCN)
PVSS projects will soon be migrated onto the new R610 for testing
ATLAS ID week, CERN, October 28th - November 1st 2013
Example PVSS-v3.8 Graphical User Interface: one sonar tube + linked temperature sensors
ATLAS ID week, CERN, October 28th - November 1st 2013 8
We have been analyzing pixel NWe have been analyzing pixel N22 environmental gas environmental gas for Cfor C33FF88 leaks for more than 18 months ( leaks for more than 18 months ( Feb 2013) Feb 2013)
Pixels: Pixels: ~70~70 independent C independent C33FF8 8 evaporative cooling circuitsevaporative cooling circuitsLeaks in certain circuits of « L2 » (barrel: layer 3)Leaks in certain circuits of « L2 » (barrel: layer 3)
ATLAS ID week, CERN, October 28th - November 1st 20139
Results from long term (> 18 month) study of pixel NResults from long term (> 18 month) study of pixel N22
environmental gas for Cenvironmental gas for C33FF88 leaks leaks%
co
nce
ntr
ati
on
of
C3F
8 in
N2 (
mo
lar)
)
ATLAS ID week, CERN, October 28th - November 1st 2013 10
Identification of cooling circuits with C3F8 pleaks during pixel detector cooling restart: 15 January 2012
(re-confirmed during shut-down 20 February 2013)
ATLAS ID week, CERN, October 28th - November 1st 2013 11
We also analyzed SCT NWe also analyzed SCT N22 environmental gas environmental gas for Cfor C33FF88 leaks for 2 months ( leaks for 2 months ( Feb 2013) Feb 2013)
ATLAS ID week, CERN, October 28th - November 1st 201312
SCT and pixel detectorcooling shut-down 20 February 2013.
ATLAS ID week, CERN, October 28th - November 1st 2013 13
Sound velocity measurement uncertainty c= 0.05ms-1
Total from effects: (temperature, pressure, distance between transducer membranes, transit time measurement)
Mixture measurement precision mix = cm
m = local gradient of curve (c vs. conc. C2F8 in N2)
(0.05ms-1/12.27ms-1%-1) 0.004% (0≤%C3F8 ≤ 1%)
14
Analysis of CO2 leaks from IBL staves into N2 atmosphere
Membrane: separation of IBL N2
atmosphere from that of the rest of
the pixel detector
82nd Sonar Meeting, CERN, October 16th, 201315
Slope = 1.1 ms-1%-1
Mix. resolution for sound vel.measurement uncertainty
of 0.05ms-1 0.05%
MW CO2 = 44: MW N2 = 28
16ATLAS ID week, CERN, October 28th - November 1st 2013
Sonar installations for theNew thermosiphon evaporative
coolant circulator (will replace USA15 C3F8 compressors)
(See also slides by Michele Battistin)
ATLAS ID week, CERN, October 28th - November 1st 2013 17
Degassing sonar
Sonar UFM
3-4 aspirating sonars SCT, pixel, IBL, TRT(?) :Poweredge 610 handling all sonars,
interface to ATLAS FSM and DB18
Condenser platform
Cable slot
3178
3185
ATLAS ID week, CERN, October 28th - November 1st 201319
Degassing sonar (now leak-tested for installation) & local electronics
Being assembled & tested by Sergey Katunin
ATLAS ID week, CERN, October 28th - November 1st 2013 20
Control cables for Thermosiphon condenser & degassing sonar
Claddin
g wal
l
Bldg 3
178
Sonar
elec
tronics
cabin
et
mou
nted on
fram
e
Bldg 3185
ATLAS ID week, CERN, October 28th - November 1st 2013 21
ATLAS ID week, CERN, October 28th - November 1st 201322
ATLAS ID week, CERN, October 28th - November 1st 2013
-controller:
Modbus under TCPIP
-controller:
Modbus under TCPIP
23
ATLAS ATCNnetwork
AT
LA
S A
TC
Nn
etw
ork
Sonar system integration into the ATLAS DCSSonar system integration into the ATLAS DCS
High flow UFM now installed in USA15 compressor room
ATLAS ID week, CERN, October 28th - November 1st 2013 24
Gas flow
Gas flow
Sound transit time diff in opposedDirections at 45º to gas flow flow rate
Local sonar electronicsto go on wall next to door
ATCN ethernet spur to switch in T/DAQ room
4-20mA signalsFor Tup, Tdown,
Ultrasonic flowmeter in thermosiphon C3F8 vapour return line (400 l/sec) to surface: installed in USA15
Thermosiphon PLC-based control system racks
(provide sonar UPS feed)
ATLAS ID week, CERN, October 28th - November 1st 2013 25
Instrument can also analyze C3F8/C2F6 blend molar ratioif blend operation becomes necessary.
ATLAS ID week, CERN, October 28th - November 1st 2013 26
Ref: Alex Bitadze PhD thesis (Univ. Glasgow):
Evaporation temp. improvement in SCT bistave with varying C2F6/C3F8 blends:
(Vertical error bars represent ± 0.3% precision on blend measurement with sonar in a combined flowmeter/analyzer)
ATLAS ID week, CERN, October 28th - November 1st 2013
SOME RECENT SONAR REFERENCES (not exhaustive)
[1] R. Bates et al, JINST 8 (2013) P02006[2] R. Bates et al, “A custom on-line ultrasonic gas mixture analyzer with simultaneous flowmetry, developed for the upgraded evaporative cooling system of the ATLAS Silicon Tracker.” Proc. 3rd intl. conference on Advancements in NuclearInstrumentation, Measurement Methods and Applications, Marseille, June 23-27 2013; to be published in IEEE Trans. Nucl. Science.
[3] R Bates et al, JINST 8 (2013) C01002[4] R. Bates et al, IEEE Trans. Nucl. Sci. 59(2012) 2367[5] R. Bates et al, “SIMULTANEOUS ON-LINE ULTRASONIC FLOWMETERY AND BINARY GAS MIXTURE ANALYSIS FOR THE ATLAS SILICON TRACKER COOLING CONTROL SYSTEM.”Proc 14th Intl. Conference on Accelerator & Large Experimental Physics Control Systems, San Francisco, Sept 25-30 2013; to be published in JINST
27
Sonar measurements allow continuous real-time analysis of binary gas mixtures
(including those formed by leaks) Sonar is being integrated into the ATLS DCS.
Precision improves with mol. wt. difference:
Sonar has repeatedly identified in-operation leaks in layer 2 of pixel detector at 10-5 level:
Used for SCT environmental gas, soon also IBL:
Will play a vital role in thermosiphon operation
Also for possible C3F8/C2F6 blend operation
ATLAS ID week, CERN, October 28th - November 1st 201328
Back-up slides
ATLAS ID week, CERN, October 28th - November 1st 201329
WallInstallation(automatedsampling)
3082nd Sonar Meeting, CERN, October 16th, 2013
Original tube positions respected in new panel (old labels still relevant)