PHOS DCS

1
PHOS DCS

• Current status for Sarov crystal cooling system.

Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
2
PHOS DCSTemperature cooling remind
requirements

• Physical factors
• PWO light yield strongly depends on
  Temperature ( 2 per 1ºC )
• APD gain strongly depends on Temperature (
  5 per 1ºC )
• We have to avoid water in FEE zone (warm
  volume) ( dew point 12ºC )
• We have to remove heat from electronics
• Therefore to achieve 1 energy resolution
• High precision Temperature measurements in PWO
  matrix required
• High cooling stability required
• Warm volume Temp. control cooling
• FEE water cooling required

PHOS requirements T operation -25 ºC T
stability 0.1 ºC T precision 0.05 ºC
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
3
PHOS DCS Temperature cooling history
All PHOS prototype beam tests in 2000..2004 were
done with temperature cooling system under
control of CRW-DAQ SCADA designed in VNIIEF.
Experience shows high reliability stability of
hard soft.
PHOS prototype 256 PWO crystals Cooling
system ? ? Beam test results
T,ºC

• For 1st module operation
• in 2006 we have re-designed
• temperature cooling system

CRW-DAQ SCADA control algorithms will be same
as in past because this system stable, tested,
people have experience, all hardware supported
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
4
PHOS DCS Temperature cooling tasks

• Temperature monitoring
• Temperature monitoring in PWO matrix, 24 Ni100
  sensors
• Temperature monitoring in warm volume (FEE zone),
  8 Ni100 sensors
• Cooling control
• Pump control to move cooling liquid
• Cooling liquid flow rate monitoring
• Cooling liquid temperature measurement, 3 Pt100
  sensors
• Air temperature measurement, Pt100 or Ni100
  sensor
• Cooling machine control to achieve high
  temperature stability
• Heater-1 control (heat cooling liquid for fast
  module warming)
• Heater-2 control (heat warm volume to avoid water
  in FEE)

ELMB
ICP-DAS devices
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
5
PHOS DCS Temperature cooling temperature
monitoring

• Why ELMB for temperature monitoring in L3?
• CERN designed recommended
• Was tested by ATLAS people to work with high
  magnet fields radiation
• OPC server supported by CERN

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PHOS DCS Temperature cooling cooling control

• Why ICP-DAS devices for cooling?
• World wide industrial device set controllers,
  ADC-s, DAC-s, DIO-s, etc
• VNIIEF team have experience with ICP-DAS modules
  since 1998
• Were successfully used in PHOS 2000-2004 beam
  tests
• ISO certified, Russian Federation certified
• Designed for distributed systems
• Use RS-485 industrial bus, up to 1.2 km at 115200
  baud rate
• Designed for reliable safe real time systems
• Hardware watchdog
• Programmable Power-On and Safe-On states
• Autonomous controllers for high robust systems
• High voltage insulation - 3000 V on RS-485
  power
• Relatively cheap (due to mass production)

Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
7
PHOS DCSTemperature cooling CRW-DAQ

• Why CRW-DAQ for temperature cooling?
• Designed in VNIIEF, Sarov, Russia for high
  reliable facilities
• VNIIEF team have experience with CRW-DAQ since
  1998
• Successfully used in PHOS 2000-2004 beam tests
• Supports OPC client to connect equipment
• Supports DIM to connect PVSS
• Supports ICP-DAS devices
• Supports ELMB (via OPC client)
• Designed for reliable safe real time systems
• Has built-in scripting language (Pascal) all
  developer tools included
• Driver development tools are included

Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
8
PHOS DCSTemperature cooling how it looks
CRW-DAQ VNIIEF re-designed SCADA (screenshot
from new program of cooling system)
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
9
PHOS DCSTemperature cooling scheme (1st
module)
I-7520 in CR4 RS-232/RS-485
PC-2, Windows in CR4
I-8831 autonomous controller (PLC)
RS-232
RS-485
RS-485
Ethernet
CRW-DAQ
COM port
24V
24V
I-87024 4 DAC
OPC client
DIM server
10V
10V
OPC server
24V
in Cavern
PCI/CAN
PHOS module in L3
CAN bus
ELMB 64 16-bit ADC 32 4-wire Ni100
I-87013 4 4-wire RTD
Relay-1c control, SSR
24V
Relay-4c control, SSR
24 Ni100 PWO matrix
8 Ni100 FEE warm volume
Cooling machine
Heater-2 9 25W
Relay-2c control, SSR
Relay-3c control, SSR
heat conductor
Heater-1
Pump
water cooling
cooling plate
Pt100 (in)
Pt100 (Air)
CERN provided
Pt100 (out)
Flow rate sensor
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
10
PHOS DCSTemperature cooling non-standard
Ni100 sensors

• Technical parameters
• Precision of measurement 0.05C
• Thickness 0.1 mm
• Working temperature range 3030C
• Therefore
• Thin non-standard Ni-100 sensors were designed in
  VNIIEF
• Individual sensor calibration required to achieve
  better then 0.05ºC precision

Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
11
PHOS DCSTemperature cooling calibration of
Ni-100 sensors
Calibration scheme
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
12
PHOS DCSTemperature cooling calibration of
Ni-100 sensors
Calibration results
Sensors delivered 60 Sensors calibrated
46 Precision achieved 0.02ºC Sensors are
ready for 1st module
According to the certified Pt-100 sensor, the
temperature was minus 26.53
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov
13
PHOS DCSTemperature cooling status
At current moment temperature cooling system is
working with Sarov soft and can be integrated
with PVSS via DIM
Y. Vinogradov, A. Kuryakin, A. Vijushin, S.
Filchagin December VNIIEF, Sarov