Post on 11-Jan-2016
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
Engineering Challenges and Solutionsfor MeRHIC
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHICKey ComponentsPhotoinjector Design – Electron Gun (A. Burrill, 11/2009)
“Gatling Gun” multi-cathode Photocathodes & Drive Laser (A. Burrill, 11/2009)
Laser development for the required intensityLinac SCRF Accelerator Cavities (A. Burrill, 11/2009)
HOM Damper Upgrade, 6 Cavity Types, Cost and ScheduleCryogenic System (A. Burrill, 11/2009)RF systems (A. Burrill, 11/2009)
SCRF Development and Design at BNL – Engineering DesignMagnet DesignVacuum SystemRHIC Modifications – Civil and Beam LineSchedule
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
(April 09)
Linac 1
Linac 2
Main ERLs; 6 cryomodules x 6 cavities x 18 Mev/cav = 0.65 GeV per linac
0.75, 2.05, 3.35 GeV
4 GeV
0.1, 1.4, 2.7 GeV
Pre-accelerator 90 MeV ERL
Electrongun 0.1 GeV
IR2 region features: - asymmetric detector hall (appropriate for asymmetric detector for e-p collisions) - long wide (7.3m) tunnel on one side from the IR for energy recovery linac
Main components:
-100 MeV injector on the basis of polarized electron gun (50 mA) and pre-accelerator ERL.
-Two main ERLs (one of them in the RHIC tunnel) with maximum 0.65 GeV energy gain per linac.
-Recirculation passes are going outside of the existing tunnel: warm magnets, acceptable synchrotron radiation power.
MeRHIC: General layout
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
4
SCRF Cavity Development (Ilan’s Talk)
Energy Recovery LINAC•5 Cell SCRF Assembled and Tested at 2K
ERL e Gun•ASME Code compliance design complete•Laboratory Safety Committee Approval•Fabrication underway
RHIC 56 Mhz SCRF Cavity•ASME Code compliance design complete•Laboratory Safety Committee Approval•Contract
SCRF Vertical Test Facility•ASME Code compliance design complete•Laboratory Safety Committee Approval•Test Dewar & Cryogenic Refrigerator in House•Shielded Enclosure Complete
Collaborative Support:JLab, AES, SNS, TRUMPF,Cornell, Amuneal, . . .
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
5
SCRF Cavity Development – ASME Code Compliance
Cryogenic Systems need extensive review(DOE Pressure Safety Compliance and LHC Failure)•Detailed Stress Analysis done in house using ANSYS w/peer review•Detailed Cryogenic Analysis to determine proper relief valve sizing w/peer review•Fabrication QA: material testing and certifications, welding procedures and qualification, fabrication in process inspection, leak and pressure testing, certified relief devices, etc.•Final Review and approval by Laboratory Committee
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
6
Magnet Systems
Arc Magnets (Conventional, Small Aperture, high accuracy, copper bus magnets)• 361 Quadrupoles, 150 Dipoles, 56 Trim Dipoles, 56 Correctors• Prototype dipole already machined, assembled, and field mapped.• Quadrupole prototype being machined
Spreader Combiner Magnets (Dan’s Talk)• 4 Spreader/Combiner conventional dipole magnets, • 10 thin septum magnets, 42 vertical dipole magnets, 68 Correctors
SCRF Cavity Magnets• 14 SC Quadrupoles in the SCRF cavity cryostats
BNL Design, 1st Article, Test, Commercial Bid – Built to Print or Build to Specification (SC Quadrupole).
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHICVacuum System Layout
BEAM VACUUM•30 VACUUM SECTORS•10e-9 Torr pressure in arcs and s.s.•10e-10 Torr in baked transition regions•<10e-10 Torr in SC LINAC•Fully RF shielded components
LINAC INSULATING VACUUM•<10e-3 warm•Turbomolecular pump on each Module
MeRHIC Vacuum I&C•Based on recent system upgrades to AGS/Booster and EBIS
Challenges•Stress in small aperture thin wall chambers.•Synchrotron light energy absorber design. (JoAnne’s talk).
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
8
Beam Line Modifications Required in the RHIC Tunnel
Removal/Relocation of existing RHIC Beam Instrumentation.
Removal of both DX magnets/Splice Bus.
Install two new Polarized Proton Spin Rotators/modify VJP.
Separate Beam Tubes for blue and yellow beam.
• Be beam tube. STAR and PHENIX beam tubes.
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
9
Spin Rotator Installations 1:00 and 2:00
Fabricate 2 new Spin Rotators (BNL Magnet Division)
Spare Coil Assembly will help schedule
Reconfigure Q4 end for Spin Rotator Coupling
New VJP sections required between Q3 and Spin Rotator
New warm to cold fabricated for Spin Rotator/VJP transition
Fabricate components to existing drawings 6:00 and 8:00
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
10
Remove DX Magnets, Install e Beam Injection Chicane
Removal of both DX magnets as a complete units
Remove and re-splice Blue SC Bus.
DO magnets do not have to be shifted
6 new warm dipoles for beam alignment
2 new wide aperture warm dipoles
DX Magnet + Y chamber & ZDC
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
11
Conventional Facilities – Civil Construction
Major Additions:Racetrack tunnel with transitions to RHIC tunnel. (possible RHIC schedule issue)• Service buildings with access ports to racetrack• 1ea – 20x150 for cavities, 1ea – 16x40 for ERL, 2 ea -16x50 for bendsPower• Extension of the 13.8Kv overhead line to 2:00 – 25 MW• 2ea – 2 ½ MVA unit substations, 1ea 13.8/4.2Kv transformers, Basic power distributionCooling water• 3 MW demineralized cooling water system - Basic water distributionUtilities• Extension of the sanitary sewer line, Utility compressed air, Domestic water, Extension of the storm
drains, Network / communications ductwork
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHICSummary of C-AD Facility Characteristics
Over 1 Million Ft2 Of Equipment, Office, And Workshop Space
110 Buildings
1000 Acres Of Land
7 Accelerators
400 Direct Staff
22.5 Allocated Staff
6.2 Miles Of Vacuum Beam Pipe
24 Miles Of Cable Tray
62 Electrical Substations
1000s Of Electrical Distribution Circuits
15 Cooling Towers In Service
52 Cooling Systems In Service
1000s Of Electro-magnets / Power Supplies
1740 Superconducting Magnets in RHIC
26 Compressors For Cryogenics System
Power Consumption: 25 MW includes 5 MW for the cryogenic refrigerator.
(MeRHIC: 5.7 MW cryogenics, 14 MW RF and PS)
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHIC
13
Installation – Schedule
Only Four year construction project CD-3 to CD-4
Critical Items must be ordered during CD-1 and CD-2
• SCRF Cavity Fabrication
• Tunnel Construction Design
• Spin Rotator Magnet Fabrication
Long Lead Items will drive schedule
RHIC Operations Schedule During Construction
New Tunnel tied in 2 years after CD-3
Temporary Shielding at Tunnel Tie-in
• Existing 20 Ton Crane!
N
E
W
S
Joseph Tuozzolo EIC Stony Brook University January 10, 2010
MeRHICC-A Department 50 years of significant upgrades
AGS (1960)
80” Bubble Chamber + others (1966)
Slow Extracted Beam (1968)
200 MeV Linac (1970)
AGS Polarized Protons/Heavy Ions (1984 - 86)
Booster (1990)
RHIC Facilities (1980 – 2000)
NASA Space Radiation Laboratory (2004)
Electron Beam Ion Source, Stochastic Cooling (2010)
+ Collaborations: SNS, LHC, NSLS, . . .
MeRHIC is another evolution