IRIS2 Project Status. SNEAP 2008 October Ray Juras. Managed by UT-Battelle for the Department of Energy

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1 IRIS2 Project Status October Ray Juras Managed by UT-Battelle

2 HRIBF Produces high-quality post-accelerated beams of unstable nuclei A national user facility for RIB science Radioactive ion beams (RIBs) Developed out of existing accelerator complex [low incremental cost] Users group has 570 members Research programs in two primary areas Nuclear structure & reactions Nuclear astrophysics Operates 5 day 24 hour schedule 4000 to 4500 total hours per year Only facility of its type in the US Has capabilities that are unique worldwide Helping to develop ISOL RIB science Pioneering techniques, developing technology ISOL development team has made many world-leading developments 2 Helping to develop, maintain a user base for a next-generation facility Managed by UT-Battelle

3 HRIBF Post-accelerated Beams 175 RIB species available (+26 more unaccelerated) 32 proton-rich species 143 neutron-rich species Post-accelerated Intensity Beam list increased by ~50% since Managed by UT-Battelle

4 HRIBF 25MV Tandem Electrostatic Accelerator Injector for Radioactive Ion Species 1 (IRIS1) Injector for Stable Ion Species (ISIS) Oak Ridge Isochronous Cyclotron (ORIC) Enge Spectrograph Daresbury Recoil Separator (DRS) High Power Target Laboratory (HPTL) On-Line Test Facility (OLTF) 4 Managed by UT-Battelle Recoil Mass Spectrometer (RMS)

5 IRIS2 Project Motivation 5 Implements a fully functional second production station for HRIBF IRIS2 will duplicate all capabilities of the existing injector (now called IRIS1), thus providing the needed redundancy that will substantially improve facility reliability and efficiency. IRIS2 will also provide scope for implementation of many new features unavailable at IRIS1 (laser ion sources, laser ion beam purification, beam cooling, etc ) The implementation of IRIS2 at the HRIBF will directly impact the efficiency and effectiveness of facility operations. Analysis suggests an impact amounting to an increase on the order of 50% in the total number of hours of RIB delivered to experiments. This translates to approximately 3000 hours of RIB to experiments in the current 5-day operation mode and 4000 hours of RIB in 7-day mode. IRIS2 will increase the number, intensity, and quality of RIB beams and increase the number of beam hours on target that the HRIBF can provide. This dramatic impact on facility operations will significantly extend the physics reach of the facility. Project requires minimal facility downtime. Managed by UT-Battelle

6 IRIS2 Project Cost and Schedule IRIS2 is a $4.735M project, including escalation and contingency. Project start: Q4 of FY2006 Project completion: Q4 of FY Managed by UT-Battelle

7 HPTL Configuration Pre-IRIS2 Platform operated at zero volts, capable of +/-250 kv 60 kv Conduit Racks at 60 kv Racks at ground Temporary Isolation transformers 7 Managed by UT-Battelle

8 Target Room High Voltage Platform Today The target room platform structure has undergone the following changes: Addition of a platform extension for beam transport. Matched to the high voltage capabilities of the existing platform Designed to support components for RIB transport Procurred from NEC Addition of an acceleration tube between the ORIC beam line and the existing 60 kv source acceleration tube Addition of an acceleration tube above the RIB analysis magnet Addition of localized shielding 8 Managed by UT-Battelle

9 Target Room High Voltage Platform Today High Voltage Platform Extension Movable Localized Shielding 9 Managed by UT-Battelle Acceleration Tubes

10 High Voltage Components in Target Room Acceleration Tubes Acceleration Tubes Station Post Insulators (25 Total) Movable Localized Shielding 10 Managed by UT-Battelle Conduits

11 Instrument Room Today A new high-voltage platform was constructed for the instrument room HPTL control and instrumentation equipment racks All wiring and utilities were removed between rooms High voltage conduits were installed The new instrument platform was installed Racks were fork-lifted onto the new platform Additional racks of the same type were added for injection beamline controls/instrumentation New cable trays and power distribution were installed Wiring and utilities were reinstalled HPTL operational during remainder of IRIS2 project Three phase 208 V power at platform and source potential is now provided by 50 kw motor-generator sets with insulated shafts Compared to the IRIS1 instrument platform, the IRIS2 platform has better access less constrained for maintenance and more flexible for future. A +/-200 kv power supply is used to provide platform bias Glassman low-ripple, reversible, 10 ma max Uses capacitance of platform system to reduce ripple 11 Managed by UT-Battelle

12 Instrument Room Today Conduits Motor-Generators Instrument Platform 12 Managed by UT-Battelle HV Power Supply (under platform)

13 High Voltage Components in Instrument Room 60 kv Racks PlatformPotential Generator SourcePotential Generator Instrument Platform 13 Managed by UT-Battelle Platform Racks Utilities Rack Power Supply (under platform) Insulated Shafts Through Wall Conduits Fence

14 Isolated Power for IRIS2 The IRIS2 High Voltage Platforms require isolated power at both platform and source potentials. Purchased from NEC with high voltage platform system Power is provided by two 50 kw motorgenerator sets that each produce 3phase wye-connected 208 Vac. Insulated shafts transmit torque from motors to generators. The motors are mounted outdoors The generators are mounted on the instrumentation platform Load tested to 50 kw with a portable load bank borrowed from HFIR. The generators are wired to a power distribution system at each potential with standard breakers for circuit protection and lockout/tagout. 14 Managed by UT-Battelle

15 15 Managed by UT-Battelle

16 IRIS2 Localized Shielding Designed by Jim Johnson, Jim Beene and Cecil Williams Provides background reduction for experiments Not a rad safety issue Neutron dose Reduction: HPTL R&D area (C212) by factor >6, Enge experiment area (T106) by factor >8. Target Room Air: May reduce air ionization, sparking and leakage current. South wall and roof is supported by a carriage mounted on linear bearings, positioned by a drive screw driven by a pneumatic motor, moves at a rate of.5 inches per minute. Shielding weight is 13,200 lbs. Remotely moveable section provides overhead access to TIS for remote handling. West wall is stationary. Shielding weight is 7200 lbs. 16 Managed by UT-Battelle

17 IRIS2 Localized Shielding 17 Managed by UT-Battelle

18 IRIS2 High Voltage Conduit Installation Conduits were installed into a saddle of 2 inch thick polyethylene laminations Additional saddles were then installed to prepare for the next conduit 18 Managed by UT-Battelle

19 Four conduits ORNLDesigned Conduits IRIS2 High Voltage Conduits Installed through opening in 9.5 ft thick shield wall. One utilized for Source Potential Cables and Water One utilized for Platform Potential cables One utilized for Platform potential deionized water and compressed air One utilized as an installed spare, can be configured for use at platform potential or source potential 19 Managed by UT-Battelle

20 DESI RED MODI FI ED BEAM MATRI X S12 = S34 = EQT Injector Beamline Optics MATCH VARI ABLES ( NC=2) MPP MPE VALUE P B O Lab T R A C E DATE: TI ME: 17: 06: 43 Image Slits mm x Z A= st order optics Trace 3D Horizontal envelope is in red Vertical envelope is blue mr ad mm x B=0. 483E+05 Z CEC/Cooler A=0. 701E mr ad B=0. 101E % transmission- Electrostatic Quadrupole Triplets (EQT) NP1= Degx KeV mm( Hor i zont al ********* ) Deg.( Longi t udi nal ) Degx NP2= Dipoles Accel.Tube Image Slits 1 * * * EBE EQT Dipole mm( Ver t i cal ) 20 Managed by UT-Battelle 14 * * * EQT E 24 B 25 E 2627 E 2829 B KeV E Object Slits 1st Stage Mass Separator 33 Ion Beam Cooler * * * * * * * Charge Exchange Cell (CEC) Lengt h= mm

21 Transport Beamline mm x A= NP1= 1 2 P B O Lab T R A C E mr ad mm x B=0. 621E+04 Z Degx KeV mm( Hor i zont al ) 0. 0 Deg.( Longi t udi nal ) Inj. EQT 1 Beamline 12 MATCH VARI ABLES ( NC=2) MPP MPE VALUE DATE: TI ME: 18: 38: 28 IRIS2 Injector Z MATCHI NG TYPE = 11 DESI RED MODI FI ED BEAM MATRI X S12 = S34 = * * * * * * * Accel.Tube EQT 35 Spherical Deflector 22 * C112 T106 Wall EQT KeV NP2= Spherical Deflector Electrostatic Quadrupole Triplets * * * mr ad B=0. 770E Degx mm( Ver t i cal ) * * * EQT * * * * EQT Lengt h= mm Trace 3D Calculation 21 Managed by UT-Battelle A= 13. 5

22 Goals Max feedthru voltage ±30 kv Transmit ions up to 250 kev w/large acceptance Equal focusing x & y 35 Spherical Deflector 22 Managed by UT-Battelle

23 Goals Max feedthru voltage ±30 kv Transmit ions up to 250 kev w/large acceptance Equal focusing x & y Can be rotated to permit straightthrough beam 90 Moveable Spherical Deflector 23 Managed by UT-Battelle

24 Crane installed during HPTL project. Remote Handling System Manual operation; 500 lb. capacity. Used for installation and removal of target/ion source assemblies Upgraded to programmed operation in IRIS2 Project 24 Managed by UT-Battelle

25 Crane coupling to TIS Enclosure 25 Managed by UT-Battelle

26 Controls EPICS Software Extension of existing HRIBF accelerator controls About 850 process variables (pv s) were implemented for HPTL controls. Roughly 1700 additional pv s will be implemented for IRIS-2 Majority of control electronics is Allen Bradley ControlLogix/Flex I/O Similar to controls at SNS; EPICS drivers are well developed. Readily available with short leadtime Group3 electronics to be used for a small number of critical ion source controls (as at SNS) Fiber optics ethernet communication to controls at platform and source potential Serial devices interfaced by Moxa ethernet-to-serial servers Beam profile monitors (BPM) at elevated potentials interfaced by BPM multiplexer and ethernet-capable oscilloscope interfaced to EPICS. Vacuum Controllers from JC Controls with serial interface. Designed and implemented by Martha Meigs, John Sinclair and Ray Juras 26 Managed by UT-Battelle

27 Use of lasers on the IRIS2 Platform Gas-filled RFQ for cooling negative ions Lasers RIB production target and ion source 27 Managed by UT-Battelle

28 Laser Room for IRIS2 28 Managed by UT-Battelle Room size is approximately 16 feet by 16.5 feet with a 5 x 7 section removed for the shield door to Room C-113 Two walls exist but must be covered with appropriate wall materials Requires new penetration through 9 ft thick shield wall to transport laser beam to the target room Walls, doors, and the penetration will be designed with laser safety in mind Laser safety system needed to protect personnel from accidental exposure to laser beams Walls and ceiling must be dustfree and be able to withstand a 60-second irradiation of the full laser power without burning, emitting toxic fumes, or allowing penetration

29 HRIBF Project Progress Summary The HTPL is operable The high voltage platform system is complete The injector beamline is assembled and under vacuum Injector controls are in progress and largely complete The transport beamline is partly assembled The Laser Room is out for bid Injector beamline commissioning with beam is scheduled for January Project completion is on track for September Managed by UT-Battelle

30 IRIS2 Design Team Alan Tatum Jim Beene Darryl Dowling Jim Johnson Ray Juras Martha Meigs Tony Mendez Gerald Mills John Sinclair Dan Stracener Cecil Williams 30 Managed by UT-Battelle

31 31 Managed by UT-Battelle

32 Extra Material 32 Managed by UT-Battelle

33 Semiconductor Susceptibility Neutron Effects Assume 50 μa, 50 MeV Protons on Ge target 2000 hours Assume electronics one meter from target Total Ionizing Dose: 1x107 Rads/yr Neturon Fluence: 9x1014 n/cm2 Conclusion: No Electronics on the RIB Platform Experience: We installed logarithmic electrometer amplifiers on the platform about 3 meters from the target/ion source n-mos devices and analog bipolar failed in a few hundred hours IEEE Transactions on Nuclear Science, Vol. NS-34, No. 6, December Managed by UT-Battelle