Beam Diagnostics & Coolant Systems Division

Coolant Systems & Process Control Section

Accelerator subsystems like magnets, power supplies, RF cavities etc. get heated during operation due to joules heating. It is essential to cool these sub-systems to prevent them from getting overheated and to prevent from changing their parameters due to change in temperature.
Demineralsed (DM) water is used for cooling accelerator subsystems due to following reasons:

  • To avoid leakage of current through cooling water: Since water flows in contact with electrical systems, a part of current can be carried away by water, if it is conducting.
  • To avoid electrical short-circuiting: Since various components are in Different levels of electrical state, conductive water can cause short-circuiting partially.
  • To avoid corrosion / scaling: Dissolved salts can increase corrosion (damaging the component being cooled) or scaling (hampering effective heat transfer during cooling). DM water has minimal salt content.
  • Mandate
  • Specifications
  • Development Activities
  • Publications
  • Team members
  •  
Mandate

  • Design, Installation, Testing , Commissioning, Operation & Maintenance of LCW Plants for cooling the Accelerator Machine Components & various Accelerator Development Labs.
  • Development, Installation, Testing , Commissioning, Operation & Maintenance of Precision Chiller Units for RF Cavity Cooling with ±0.1°C temperature stability in the complete operating range of 20~75 °C with remote operation.
  • Installation, Testing, Commissioning, Operation & Maintenance of DM & Soft Water Plants for Accelerator LCW Plants.
  • Monitoring & Quality Controlling of Accelerator Coolants - DM & Soft Waters.

List of Operating LCW Plant in Accelerator Area:

Sl No Location Capacity of Plant
1 Indus – 1 600 KW
2 Indus – 2 4000 KW
3 IMA 300 KW
4 Magnet Testing Lab 200 KW



Specification for LCW Plant for Accelerator Machine:

Plant Indus – 1 Indus - 2
Wattage 600 KW 4000 KW
Electrical Power 120 kVA 750 kVA
Primary Circuit
Flow Rate 60 m3/hr 240 m3/hr
Supply Pressure 10 kg/cm2 10 kg/cm2
Inlet Temperature 30 ° C ± 1 °C 30 ° C ± 1 °C
Electrical Conductivity < 1 µs/cm < 1 µs/cm
Surge Tank Volume 2 x 5.0 m3 2 x 7.5 m3
Secondary Circuit
Flow Rate 90 – 120 m3/hr 300 – 450 m3/hr
Supply Pressure 5 kg/cm2 5 kg/cm2
Hardness < 2 ppm < 2 ppm
DM Circuit
Flow Rate 0.5 m3/h (1m3/h max) 1 m3/h (3 m3/h max)
Charge between regenerations 20 m3 40 m3
This is the schematic view of the LCW Plant with the general layout of equipment
This is the schematic view of the LCW Plant with the general layout of equipment


LCW Plant Service block Area view with different sub system loops.
LCW Plant Service block Area view with different sub system loops.


LCW Plant Pumping System view with Instrumentations.
LCW Plant Pumping System view with Instrumentations.


LCW Plant Heat Exchanger view with control valves arrangement.
LCW Plant Heat Exchanger view with control valves arrangement.


LCW Plant Cooling Tower view located on the terrace with make up Tank.
LCW Plant Cooling Tower view located on the terrace with make up Tank.


LCW Water Treatment Plant view.
LCW Water Treatment Plant view.


Specification for RF Cavity Chiller Units for Accelerator Machine:

Parameters Indus-2 Microtron Booster Indus-1
Cooling Capacity 65 kW 400W 2500W 3500W
Pump Flow Rate 13 m3/h 5 LPM 25 LPM 80 LPM
Temperature Range 25 – 75 ºC 20 ~ 30 ºC 20 ~ 30 ºC 20 ~ 31 ºC
Temperature Stability ± 0.1 ºC ± 1 ºC ± 0.5 ºC ± 0.5 ºC
Maximum Design Temp. 85 ºC 50 ºC 50 ºC 50 ºC
Condenser Split, Air Cooled Air Cooled Air Cooled Split, Air Cooled
Evaporator Brazed PHE Dipped Tube Dipped Tube Brazed PHE
Heater Bank 32 kW, Insertion Type NIL NIL 2 KW
Control Automatic, through PC ON/OFF Ctrl ON/OFF Ctrl Automatic, through PC


Coolant Systems & Process Control Section


Development Activities & Facility in Coolant Systems & Process Control Section:
  • Development of Hydraulic Lab for Calibration & Testing of Valves & Pipe Fittings.
  • Development of Flow Calibration Rig to calibrate Flow Meters & Flow Switches
  • Development of Thermal Lab for Calibration & Testing of Temperature Sensors and Controllers.
  • Development of Compact DM Plants.
  • Development for Utilization of TESS (Thermal Energy Storage System) in LCW Plant.
Flow Calibration Test Setup
Flow Calibration Test Setup


Water Analysis & Testing Facilities
Water Analysis & Testing Facilities


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