SPring-8, the large synchrotron radiation facility

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Outline of Main Facilities

(1) Outline of buildings

1.Storage Ring

  Area : approximately 70,000 m2
  Main structure : S construction, party RC construction (machine storage section, RI Laboratory)
  Flooring flatness : within±20 mm
  For prevention of microscopic vibration and microscopic deformation : bedrock support, expansion joint, measures against inequality subsidence

2. Linac

  Area : approximately 4,000 m2
  Main structure : RC(S)construction

3. Synchrotron

  Area : approximately 2,000 m2
  Main structure : RC(S)construction

4. Research facility

  1) Biomedical Imaging Center : approximately 5,000 m2 :RC structure
  2) Machine Laboratory : approximately 700 m2 :S structure
  3) Accelerator and Beamline R&D Facility : approximately 3,200 m2 :S(RC) structure
  4) RI Laboratory : approximately 2,000 m2 :RC structure

5. Others

  1) Main building : approximately 6,400 m2 :RC structure
  2) Utility Management Building : approximately 500 m2 :S construction, prefabrication
  3) Cafeteria : approximately 1,200 m2 :box frame RC(S)structure
  4) Guest house : approximately 8,700 m2 in total (five buildings) :box frame RC(S) structure

SPring-8 map
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(2)  Outline of power supply facilities

1.  77 kV switching station

  1) 77 kV 2-circuit incoming power
  2) Contracted electric power: 32,300 kW

2.  77 kV substation 1 ( Storage Ring )

  1) For electromagnet and high-frequency accelerator : 6.6 kV:20MVA:2 circuits
  2) Power for buildings and lighting : 6.6 kV:20 MVA:1 circuit
  3) Filter facility against higher harmonics    
  4) Emergency generator facility (turbine generator) : 3,200 PS:2,000 kVA:6.6 kV:60Hz

3.  77 kV substation 2 (Linac, Synchrotron)

  1) For Linac : 6.6 kV:5 MVA:1 circuit
  2) For Synchrotron : 6.6 kV:25 MVA:1 circuit
  3) For water treatment facility for water discharged from experiment : 6.6 kV:6 MVA:1 circuit
  4) Reactive power compensation system    

4.  77 kV substation 3 (Accelerator and Beamline R&D Facility)

  1) For experimental facilities and New SUBARU(Hyogo prefecture) : 6.6 kV:6MVA:1 circuit
  2) For commercial power : 6.6 kV:6 MVA:1 circuit
  3) For X-ray Free Electron Laser : 6.6 kV:12 MVA:1 circuit


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77 kV switching station 77 kV substation 1 77 kV substation 2 77 kV substation 3
77 kV switching station 77 kV substation 1 77 kV substation 2 77 kV substation 3


(3)  Outline of  air-conditioning facilities

1. Heat source  system

1) Air-source heat pump chilling unit
2) Turbo refrigerating machine (centrifugal refrigerating machine)
3) Water source single stage compression chilling unit (heat recovery system)
4) Gas burning absorption refrigerating machine (gas burning type)
5) Steam boiler (gas burning type)

2. Air control  system

1) Accelerator Tunnel:    Outside air conditioning apparatus + fan coil unit
2) Experimental Hall:    Outside air conditioning apparatus + air handling unit
3) Experiment Preparation Room:    Outside air conditioning apparatus + air conditioning unit (packaged system)
4) Preparation Room in Linear and Synchrotron:    Air cooled heat pump packaged air-conditioner

3. Smoke control

  • Natural smoke extraction

4. Special exhaust

  • HEPA filter unit (in order to exhaust of Accelerator Tunnel)


(4)  Outline of sanitation equipment

1. Water supply

  • Water source-purified water (2 systems: purified water and industrial water); Pressurized water supply (controlled by inverter)

2. Water discharge

  • Three systems (domestic wastewater, experimental drainage, drainage from Accelerator Tunnel)

3. Gas

  • Medium pressure: for boilers : Low pressure: for experiments

4. Fire extinction

1) Water for fire extinction, Outdoor fire hydrant
2) Sprinkler (Storage Ring: maintenance aisle, upper part Accelerator Tunnel)
3) indoor fire hydrant (Storage Ring: vicinity of Control Room)



(5)  Outline of machine cooling system

1. Refrigeration system

  1) : Water-source single-stage compressor chilling unit
  2) : Reciprocating single-stage compressor chilling unit

2. Cooling method

  1) Linear and Synchrotron (precision temperature control in acceleration column)
 
: Reciprocating chilling unit + electric heater + storage tank (27.5°C - 30°C ±0.1°C)
    : This is a cooling method installed to precisely control the wall temperature of acceleration columns, which are divided into 16 groups of acceleration columns of a linear accelerator that are responsible for the generation and acceleration of electrons, to within ±0.1°C of the predetermined temperature.
  2) Linear and Synchrotron (Synchrotron cooling water)
     a. SSBT / magnet cooling water           :    Cooling tower (33.0°C ±0.2°C)
     b. acceleration equipment cooling water   :    Cooling tower (35.0°C ±0.2°C)
     c. power of magnet cooling water         :    Cooling tower (32.0°C ±0.2°C)
  3) Storage Ring (precision temperature control for acceleration equipment)
    : Water-source screw chilling unit + electric heater + storage tank (30°C ±0.2°C)
  4) Storage Ring (magnet/vacuum cooling water)
    : Water-source screw chilling unit + cooling tower (30°C ±0.2°C)
  5) Storage Ring (beamline cooling water)
    : Water-source screw chilling unit + cooling tower (30°C ±0.2°C)

3. Cooling water

    : Purified water (ion-exchange resin method) (2 MΩ or higher)

4. Others

    : Dissolved oxygen removal device



Dissolved oxygen removal device
Dissolved oxygen removal device
This device maintains a low oxygen concentration in the cooling purified water in the Storage Ring (magnets and vacuum equipments line)

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Last modified 2011-07-25 17:18