Facility

Index

Page No.

1. Major Changes in Configuration since the Lehman Review in May 1999 1

2. Configuration for CDR 0.4, September 2000

Injector 2

Main Linac 3

Beam Delivery 3

Interaction Regions 4

Site Development 4

Campus 4,5

1. Major Changes in Configuration since the Lehman Review in May 1999

Cut and cover construction technique has been employed where permitted by topography and geology.
Tunnel lengths have been shortened to conform to the new lattice and topology. The number of main linac sectors has been reduced from 92 to 44. The length of one sector has been increased from 225.2 to 450.4 meters. Beam delivery has been significantly shortened.
Intervals between access shafts have increased, reducing the number of shafts required. The number of utility shafts has also been reduced.
Sleeves have been created in the tunnel walls to house electronics. These sleeves will be cooled by LCW.
A centralized cooling plant has been adopted, replacing the distributed cooling system.
Active cooling systems to control tunnel air temperature have been adopted in the injectors, main linacs and beam delivery. (Only beam delivery had active air cooling in the Lehman Review configuration.)
The temperature for the LCW cooling systems for the injectors and main linac has been lowered to 82ºF from 113ºF.
Magnet LCW cooling requirements have been substantially reduced by the use of permanent magnets.
For the non-RF sectors of the main linac, the LCW cooling system has been reduced in capacity to meet only the Phase I cooling requirements
Some power supplies will be air-cooled. (At the time of the Lehman Review, all power supplies were water-cooled.)
Main linac cooling substations have been doubled in capacity from 2.5/3.2 OA/FA to 5 MVA OA and the number of substations has been reduced from 46 to 22.
Main linac modulator substations have been doubled in capacity from 2.5/3.2 OA/FA to 5 MVA OA and the number of substations has been reduced from 46 to 22.
The secondary voltage in the main linac modulator substation has been changed from 480/277 volts, 3 phase, 60 hertz to 1300/750 volts, 3 phase, 60 hertz, with grounding disconnects and current limiting fault protection.
Nine 2200 volt, solid state DC converter-controllers have been added to each main linac modulator substation.

For the non-RF sectors of the main linac, the modulator portion of the equipment will not be installed for Phase I. The substation pad and enclosure will be sized to accommodate the addition of this equipment during the upgrade to 1 TeV.

2. Current Configuration of the NLC Conventional Facilities

Facility	Configuration for CDR 0.4
Injector	Sources & Boosters: Positron: 2824.08 LF (Cut & Cover: TBD %; Shallow Bored: TBD %) Electron: 941.36 LF (Cut & Cover: TBD %; Shallow Bored: TBD %) Tunnel ID: 14 FT Shafts: 6 access shafts 23 FT in diameter 3 utility shafts 8 FT in diameter Cooling System: Two mechanical pads supplied with chilled water from central cooling plant. Each pad provides chilled water (for active tunnel air-cooling, for rack cooling and for HVAC systems in klystron galleries and support buildings) and LCW (for cooling structures, waveguides and electro-magnets, and for cooling klystrons and modulators). Chilled water system total capacity is TBD tons and LCW cooling system total capacity is TBD GPM of LCW for a heat load of TBD kW. Each pad also provides 100 CFM of compressed air at 90 PSI for operating vacuum valves and other equipment. Electrical System: demand: TBD MW; 15 substations, 34.5 - 0.48 kV No. TBD Support Buildings: TBD SF total
	Damping Rings: Positron: PDR 715.04 LF PTM 196.80 LF MDR 974.16 LF (Cut & Cover: TBD %; Shallow Bored: TBD %) Electron: MDR 974.16 LF (Cut & Cover: TBD %; Shallow Bored: TBD %) Tunnel ID 14 FT Shafts: 3 access shafts 23 FT in diameter 3 utility shafts 10 FT in diameter Cooling System: Three mechanical pads, one for each ring, supplied with chilled water from central cooling plant. Each pad provides chilled water (for active tunnel air cooling, for rack cooling and for HVAC systems in support buildings) and LCW (for electro-magnets, vacuum and RF loads, and for cooling klystrons and modulators and crab cavities). Three dedicated LCW systems provide cooling for the damping ring dumps. Chilled water system total capacity is TBD tons and LCW cooling system total capacity is TBD GPM of LCW for a heat load of TBD KW. Each pad also provides 100 CFM of compressed air at 90 PSI for operating vacuum valves and other equipment. Electrical System: demand: TBD MW; four substations, 34.5 - 0.48 kV No. TBD Support Buildings: TBD SF in total
	Pre-Linacs: Positron: 2066.40 LF (Cut & Cover: TBD %; Shallow Bored: TBD %) Electron: 2066.40 LF (Cut & Cover: TBD %; Shallow Bored: TBD %) Tunnel ID: 14 FT Shafts: 2 access shafts 23 FT in diameter 4 utility shafts 8 FT in diameter Cooling System: Four mechanical pads supplied with chilled water from central cooling plant. Each pad provides chilled water (for active tunnel air cooling, for rack cooling and for HVAC systems in klystron galleries and support buildings) and LCW (for electro-magnets, collimators, vacuum and RF loads, and for cooling klystrons and modulators). Chilled water system total capacity is TBD tons and LCW cooling system total capacity is TBD GPM for a heat load of TBD KW. Each pad also supplies 100 CFM of compressed air at 90 PSI for operating vacuum valves and other equipment. Electrical System: demand: TBD MW; 12 substations, 34.5 - 0.48 kV No. TBD Support Buildings: TBD SF in total

Main Linac

Main Linac: Positron: TBD LF (Cut & Cover: TBD %; Shallow Bored: TBD %)

Electron: TBD LF (Cut & Cover: TBD %; Shallow Bored: TBD %)

Tunnel ID: 14 FT:

Shafts: 10 access shafts 23 FT in diameter

44 utility shafts 10 FT in diameter

Cooling Systems: Forty-four mechanical pads, one for each linac sector, supplied with chilled water from central cooling plant. For the RF sectors, each pad provides chilled water (for active tunnel air cooling, for rack cooling; and for klystron gallery HVAC systems) and LCW (for structures, electro-magnets and RF elbows; and for cooling klystrons and modulators). For the non-RF sectors, each pad provides chilled water for active cooling of tunnel air, for rack cooling and for klystron gallery HVAC systems. The mechanical pads for the final sector in each linac also provide LCW for the 13 MW beam dumps at the ends of the main linacs. Chilled water system total capacity is approximately 20,000 gpm for a total heat load of approximately 12,500 tons and the LCW cooling system total capacity is approximately 88,500 GPM for a heat load of 58,225 kW at 500 GeV.

Electrical System:

Demand: TBD MW

RF Sectors: 22 dual substations (one 34.5 - 0.48 kV transformer for motors, I&C racks

and power supply racks; and one 34.5 - 1.3 kV transformer & rectifier to

supply 2.2 kV dc for modulators)

Non-RF Sectors: 22 substations (34.5 - 0.48 kV

No. TBD Klystron Galleries: TBD SF each; TBD SF in total.

Beam Delivery

Beam Delivery: Positron: TBD LF (Cut & Cover: TBD %; Shallow Bored: TBD %)

Electron: TBD LF (Cut & Cover: TBD %; Shallow Bored: TBD %)

(IRT1 includes all facilities and supporting services. For IRT2, only the basic structure is provided. Electrical/mechanical systems will be installed when the second detector is built.)

Tunnel ID: 14 FT

Shafts: 5 access shafts 23 FT in diameter

6 utility shafts 8 FT in diameter

Cooling Systems: Six mechanical pads for IRT1 supplied with chilled water from central cooling plant. Each pad provides chilled water (for HVAC systems for the support buildings and for active tunnel air cooling, using air handling units) and LCW (for electro-magnets and, where applicable, for collimators and dumps). Chilled water system total capacity is TBD tons and the LCW cooling system total capacity is TBD GPM for a total heat load of TBD KW. Each pad also provides 200 CFM of compressed air at 90 PSI for operating vacuum valves and other equipment. The huts have air-cooled HVAC systems with a total installed cooling capacity of TBD tons

Electrical System: demand: TBD MW; 12 substations, 34.5 - 0.48 kV

Huts: No. TBD with total area of TBD SF

Support Buildings: No. TBD with total area of TBD SF

Interaction Region	2 IR complexes: TBD SF each. (For IR2, only the basic structure is provided.) Shafts: 1 access shaft 23 FT in diameter 2 utility shafts 12 FT in diameter Cooling systems: Two mechanical pads, for the IR1 complex only, supplied with chilled water from the central cooling plant. The pads provide chilled water (for HVAC systems for enclosed spaces) and LCW (for magnets and technical system components and for the two final 13 MW beam dumps). The chilled water system total capacity is approximately 3,200 GPM for a heat load of 2,000 tons of refrigeration and the LCW cooling system total capacity is approximately 5,700 GPM for a total heat load of 24,000 KW. Each pad also provides 200 CFM of compressed air at 90 PSI. Electrical System (IR1): TBD demand; four substations, 34.5 - 0.48 kV
Site Development	Land acquisition: 7900 acres
	Off-Site Support - TBD Alignment Network: 1493 monuments Construction Support/Spoil Disposal: TBD
	Site Preparation Clearing/Grading: TBD acres Drainage: TBD LF Fencing: TBD LF Irrigation: TBD acres
	Electrical System: TBD MW capacity Three main substations: 230 kV/34.5 kV and three-way, cross-tied ring bus distribution system Three 34.5 - 19.9 kV solidly grounded overhead distribution circuits
	Waste and Water Systems: On-site water treatment plant for peak population of TBD TBD LF water distribution system On-site sewage treatment plant for peak population of TBD TBD LF sanitary sewer lines Electrical System: five substations, 34.5 - 0.48 kV
	Communications Systems: PBX for No. TBD lines TBD LF telephone cable TBD LF SCADA cable
	Roads/Paving: TBD SY
Campus	Central Lab: 367,000 SF 1,000-seat auditorium Electrical System: two substations, 34.5 - 0.48 kV

	Heavy Works Two heavy assembly buildings: 86,000 SF Four light assembly buildings: 80,000 SF Electrical System: two substations, 34.5 - 0.48 kV
	Shops: three buildings: 30,100 SF Electrical System: two substations, 34.5 - 0.48 kV
	Warehouse: Two warehouse buildings: 80,000 SF Bottled gases building. 6,000 SF Electrical System: two substations, 34.5 0.48 kV
	Security/Emergency Services: Security services facility and outpost buildings 1,600 SF Emergency response center: 13,000 SF Medical facility 2,000 SF ES&H facility: 2,000.SF Electrical System: one substation, 34.5 - 0.48 kV
	Vehicle Service/Grounds Maintenance Three buildings: 13,000 SF total area Electrical System: one substation, 34.5 - 0.48 kV
	Centralized Cooling Plant: TBD SF Provides chilled water for cooling systems in beam-line housings; chilled and hot water for campus HVAC systems; and LCW and compressed air for the laboratory area. Electrical system: four substations, 34.5 - 0.48 kV
	Control/Communications: Control Room: 10,000 SF Operations Center: 15,000 SF Communications 5,000 SF Electrical System: three substations, 34.5 - 0.48 kV