PUMPING IFE CHAMBERS * (5m R case) 1 C. A. Gentile, 1 C. Priniski, 2 J. Sethian, 1 W. Blanchard, 1...
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Transcript of PUMPING IFE CHAMBERS * (5m R case) 1 C. A. Gentile, 1 C. Priniski, 2 J. Sethian, 1 W. Blanchard, 1...
PUMPING IFE CHAMBERS *PUMPING IFE CHAMBERS *(5m R case)(5m R case)
1C. A. Gentile, 1C. Priniski, 2J. Sethian, 1W. Blanchard, 1L. Ciebiera, 1F. Dahlgren, 1G. Gettelfinger, 1C. Jun, 1S. Langish
1 Princeton Plasma Physics Laboratory 2 Naval Research Laboratory
HAPLUniversity of Rochester/LLE
November 8 - 9, 2005
* Please see poster: C. Priniski, et al. on VPS
1.29*106 liters
6.5mToroidal
Duct
5.72*106 liters
11m LaserPorts
1.58*106 liters
7m LaserPorts
6.11*105
liters
5m PlenumDucts
Chambers Evaluated for VPS
Requirement Action
Design vacuum pumping system to meet requirements of IFE target chamber(s) including a 5m R chamber in accordance with system specifications
Proposed conceptual design employing conventional components indicates that system requirements can be achieved
Provide a cost-effective/ economical low maintenance system to meet requirements
Employ pumping system for multiple purposes (i.e., TMP backing pumps also configured to rough down target chamber)
Employ commercial off- the-shelf components with good operational history
Provide a system for “eventual” D-T operations
Proposed system configured to transition to D-T operations
Requirements:Requirements:
Design Parameters:Design Parameters:
– Employ commercial off-the-shelf (COTS) components to minimize costs.
– Employ high efficiency turbo molecular pumps backed by roughing pumps.
– Employ components which have good operational history in similar environments.
– Develop an accurate cost estimate from vendors; detailed quotes.
– Design system to transition to D-T operations with minimal modifications.
– Design system to meet base pressure and operation pressure in accordance with 5 Hz and higher (10 Hz) repetition rate (burst) operation.
– Employ components which have minimal maintenance requirements.
System Specifications:System Specifications:
– 5m R Target Chamber Dimensions• Inner radius = 5 m
• Target chamber volume 523,600 liters
• Total laser duct volume 87,560 liters
• Total volume (with 40 beam ports) 611,160 liters
– Target Chamber Pressures• Operational base pressure = 0.5 mtorr
• Gas load 60 torr-liters/sec (10 Hz burst mode)
• Total system in-leakage < 1x10-5 torr-liters/sec
Pumping CandidatesType Vapor Diffusion
PumpTurbomolecular
Pump (TMP)Cryogenic
Capital Cost Low Moderate High
Pumping Effectiveness
Excellent Excellent Excellent
Maintenance High Low High
Reliability Excellent Excellent Excellent
Operation Simple/Moderate Simple Moderate
Issues Possible backstreaming of oil onto optics and oil
into foreline
None Gas loading on panels, pump time vs. regen time
Other
Concerns
Large amount of high temperature oil at risk
None Labor intensive operation
Cost of Operation Low/Medium
(oil at ~ $500/gallon) and cryogenic fluids
Low High (energy/labor costs due to helium refrigeration and
operations)
Impact on operation Oil on optics None Regeneration time
Vacuum Pumping System:Vacuum Pumping System:• 5m R Target Chamber Pumping
• TMP pumping through plenum ducts • TMP’s (Varian-V 6000) = 30 TMP’s /duct• TMPS’s total =60• TMP backing pumps (mechanical & roots blowers) = 1/6
TMP’s• Backing pumps total = 10
• Outboard Beam Duct Pumping• TMP’s (Varian-V 2000 HT) = 1/beam port• TMPS’s total =40
• System Pumpdown• From 760 torr to 0.5 mtorr (initial conditions) < 1 day
Target InputTarget Input
Gas HoldingTank
Gas HoldingTank
Gas HoldingTank
Gas HoldingTank
Mechanical Booster Vacuum Pumping
System
ExhaustStack
Inventory Monitor/RGACryogenic
IsotopeSeparation
PROCESSPROCESS
2 StageMetal Bellows Pump
Waste or Recycled
Waste
Type B(>1080 Ci)
Type A(<1080 Ci)
MolecularSieve Bed Containers
Tritium Gas ProcessSystem (Catalytic
Conversion to Oxide)
Inventory Monitor
Leak MitigationCleanup System
Blowers
Target M
anufa
cturing
Target M
anufa
cturing
RECOVERYRECOVERY
HOLDINGHOLDING
Pumping System and
Interface
CHAMBERCHAMBER
VPS• Two pump duct configuration
• Pump duct (nominal) 2m D, 10m L
• Two VPS Pods
• 30 TMP’s/pod
• TMP’s backed by backing pumps/blower
Laser Plenum Pumping
Turbo-V 2000 HT
10” VAT Valve
Operational Pressure(s)
• Two pod (30 TMP’s/pod) configuration
• VPS (eff.)pumping speed ~ 182,000 l/sec
• Design Basis Pressure = 0.5 mtorr
• 5 Hz operation/gas load @ 30 torr-l/sec, operational pressure = 0.16 mtorr
• 10 Hz operation/gas load @ 60 torr-l/sec, operational pressure = 0.33 mtorr
Commercial Off-The-Shelf Dome (prefab) Candidate
Vacuum Pumping Pod (TMP) Configuration
Pod (Bottom) Flat Plate
Pod (Clam Shell) Configuration
Vacuum System Component Cost EstimateVacuum System Component Cost EstimateKey Equipment Name Unit Cost Qty Total
Qty Discount
Discount Total Total
A Varian Turbo-V 6000 70,000.00$ 60 4,200,000.00$ 20% 840,000.00$ 3,360,000.00$
BVarian Turbo-V 2000 HT (on outboard beam tube)
25,000.00$ 40 1,000,000.00$ 20% 200,000.00$ 800,000.00$
C Kinney KMBD -2000 Backing Pumps 41,000.00$ 10 410,000.00$ 20% 82,000.00$ 328,000.00$
DTMP Pod isolation valve (VAT valves, 20" throughput)
20,000.00$ 60 1,200,000.00$ 20% 240,000.00$ 960,000.00$
EOutboard beam duct (TMP) Isolation Valves (VAT valves, 10" throughput)
12,000.00$ 40 480,000.00$ 20% 96,000.00$ 384,000.00$
FRoughing Valves (between TMP exhaust/Kinney Inlet)
8,000.00$ 10 80,000.00$ 20% 16,000.00$ 64,000.00$
G Gate Valves (after Kinney discharge) 8,000.00$ 10 80,000.00$ 20% 16,000.00$ 64,000.00$
HDycor RGA (0-200 AMU w/ pumping system)
23,000.00$ 2 46,000.00$ 5% 2,300.00$ 43,700.00$
I Instrumentation and Control 250,000.00$ 250,000.00$ 0% -$ 250,000.00$
JTarget Chamber Isolation Valves (for roughing pump interface-VAT valves, 8" throughput)
8,000.00$ 2 16,000.00$ 10% 1,600.00$ 14,400.00$
K Seals 500.00$ 190 95,000.00$ 5% 4,750.00$ 95,000.00$
L Gas Holding Tanks (10 m3) 150,000.00$ 4 600,000.00$ 0% -$ 600,000.00$
M Pods and Interfacing Piping 500,000.00$ 500,000.00$ 0% -$ 500,000.00$
N High Vacuum Ion Gage 5,000.00$ 4 20,000.00$ 0% -$ 20,000.00$
O Pod Isolation Valve 150,000.00$ 2 300,000.00$ 0% -$ 300,000.00$
Estimated Totals 9,277,000.00$ 1,498,650.00$ 7,783,100.00$