Targetry Plans and Status MUTAC Review FNAL March

Targetry Plans and Status MUTAC Review FNAL March 17, 2006 Harold G. Kirk Brookhaven National Laboratory

International Scoping Study Question: Given a “Green Field” what are the most favorable parameters for a proton driver to a Neutrino Factory? A related question: Liquid or Solid Target Can a solid target survive a >1 MW proton driver beam? (Nick Simos Solid Target Studies) Is a liquid target for a >1 MW proton driver technically feasible? (MERIT target experiment at CERN) What is the “preferred” proton driver energy? Harold G. Kirk

Achieving Intense Muon Beams Maximize Pion/Muon Production l Soft-pion Production l High Z materials l High Magnetic Field Harold G. Kirk

Optimizing Soft-pion Production Harold G. Kirk

Process mesons through Cooling Consider mesons within acceptance of ε┴ = 30π mm and εL = 150π mm after cooling 350 Me. V Use Meson count with KE < 350 Me. V as a figure of merit. Harold G. Kirk

Meson KE < 350 Me. V at 50 m Mesons/Proton normalized to beam power Harold G. Kirk

Post-cooling 30π Acceptance Harold G. Kirk

Carbon Target Parameters Search Harold G. Kirk

Carbon Target Optimization Harold G. Kirk Set R=1. 25 cm; tilt angle = 50 mrad; Length=60 cm; Z=-40 cm

Proton KE Scan with Carbon Count mesons within acceptance of ε┴ = 30π mm and εL = 150π mm after cooling Harold G. Kirk

Summary of Results Compare Meson production for Hg at 24 Ge. V and 10 Ge. V Compare Meson production for C at 24 Ge. V and 5 Ge. V Compare Meson production for Hg at 10 Ge. V and C at 5 Ge. V 1. 07 1. 90 1. 18 1. 10 1. 77 1. 22 Harold G. Kirk

The Target Experiment at CERN “R&D on the muon production target experiment at CERN will also be funded” Presidential FY 07 Budget Request to Congress Harold G. Kirk

The MERIT (n. TOF 11) Experiment MERcury Intense Target Harold G. Kirk

Target Test Site at CERN Harold G. Kirk

The Tunnel Complex Hyd Pump & Controls in TT 2 TT 10 ISR (Control Room Location) MERIT TT 2 A TT 2 Harold G. Kirk

Profile of the Experiment 14 and 24 Ge. V Proton beam l Up to >30 x 1012 Protons (TP) per 2 s spill l Proton beam spot with r ≤ 1. 5 mm rms l 1 cm diameter Hg Jet l Hg Jet/Proton beam off solenoid axis l Hg Jet 33 mrad l Proton beam 67 mrad l Test 50 Hz operations l 20 m/s Hg Jet l 2 spills separated by 20 ms l Harold G. Kirk

PS Beam Characteristics PS will run in a harmonic 16 mode l We can fill any of the 16 rf buckets with sub-bunches at our discretion. l Each microbunch can contain up to 3 TP. l Fast extraction can accommodate entire 2 s PS fill. l Extraction at 24 Ge. V l Partial/multiple extraction possible at 14 Ge. V l Beam on target April 2007 l Harold G. Kirk

Run plan for PS beam spills The PS Beam Profile allows for: Varying beam charge intensity from 6 TP to > 30 TP. l Studying influence of solenoid field strength on beam dispersal (vary Bo from 0 to 15 T). l Study possible cavitation effects by varying PS spill structure (Pump/Probe) l Study 50 Hz operation. l Harold G. Kirk

Key Experimental Sub-systems 15 T Pulsed Solenoid 8 MVA Power Supply LN 2 Cryo-system Hg Jet Delivery System (K. Mc. Donald) Diagnostics (K. Mc. Donald) Optical Particle Detection CERN Infrastructure (I. Efthymiopoulos) Simulations (R. Samulyak) Harold G. Kirk

High Field Pulsed Solenoid l l 80 o K Operation 15 T with 5. 5 MW Pulsed Power 15 cm warm bore 1 m long beam pipe Peter Titus, MIT Harold G. Kirk

Pulsed Solenoid Milestones Delivery to MIT Reception Testing Integration Testing Ship to CERN Installation at CERN January 06 March 06 September 06 December 06 January 07 Harold G. Kirk

The Pulsed Solenoid CVIP December 2005 First Current: MIT March 9, 2006 Harold G. Kirk

System Commissioning Ship Pulsed Solenoid to MIT January 2006 l Test Solenoid to 15 T peak field March-April 2006 l Integration of Solenoid/Hg Jet system September 2006 l Harold G. Kirk

Power Supply Milestones Site Preparations Relocate and Install DC Cabling AC Cabling Refurbish PS January 06 February 06 March-April 06 Interlocks Commissioning September 06 October 06 Harold G. Kirk

Power Converter (From SPPS Transfer Line) 8000 Adc, 1000 Vdc Strategy: • Refurbishment of the West Area Power Converter, making it compatible with the project requirements Passive filter Rectifier bridges Global view sel f cap Passive filter capacitors acit ors DC output Harold G. Kirk

Cryogenic System Milestones TT 10 Vent Installation Cold Valve Box Fabrication Control System Development Surface Preparations Transfer Line Installation Cold Valve Box Testing Heater System Installation Cold Valve Box Installation Commissioning January 06 April-July 06 January-June 06 May 06 July 06 October 06 September 06 November 06 December 06 Harold G. Kirk

The Cryogenic System Key Features l 30 minutes rep-rate l. LN 2 purge before shot l. Liquid purge to buffer storage l. Gas purge to TT 10 Harold G. Kirk

Cryosytem Layout LN 2 and N 2 gas stored on the surface. Cold valve box in the TT 2 tunnel. Exhaust gas vented into TT 10 tunnel through filtration system. ~ 150 liters of LN 2 per Magnet pulse. Magnet flushed with N 2 prior to each pulse, to minimize activation of N 2. Harold G. Kirk

The Cold Valve Box (DVB) Harold G. Kirk

The Hg Jet System Harold G. Kirk

The Hg Jet Injection System Z = 0 at the Solenoid midpoint. The Hg Jet axis and proton beam trajectory intersect. Harold G. Kirk

Primary Containment Cross Section Sight Glass Primary Containment Sight Glass Cover Hg Jet Reflector Hg Supply Optics Secondary Containment OD=6. 18" (157 mm) Magnet Bore ID = 6. 38" (162 mm) Harold G. Kirk

Princeton Nozzle R&D Replaceable Nozzle Head Lexan Viewing Channel 20 HP Pump Harold G. Kirk

The Nozzle Test Setup Harold G. Kirk

Fast camera capture of waterjet September 16, 2005 @ Princeton complete waterjet Measured Waterjet Velocity 12 m/s waterjet closeup at nozzle: diameter ~8 mm, length 6 -inch Camera: Fast. Vision 13 capability 1280 x 1024 pixels, 500 frames/sec, 0. 5 sec video close-up view of nozzle Harold G. Kirk

Project Major Sub-systems 2005 Q 4 2006 Q 1 2006 Q 2 2006 Q 3 2006 Q 4 2007 Q 1 Magnet Delivery Receiving Testing Integration Testing Shipping Installation Hg Jet System Fabrication Nozzle Development Optical Diagnostics System Testing ORNL System Testing MIT Shipping Installation Harold G. Kirk

CERN Infrastructure 2005 Q 4 2006 Q 1 2006 Q 2 2006 Q 3 2006 Q 4 2007 Q 1 Power Supply Site Preparations Installation DC Cabling AC Cabling Interlocks Commissioning Cryogenics TT 10 Vent Cold Valve Box Fab. System Testing CERN Surface Preparations Tunnel Installations Commissioning Harold G. Kirk

Summary The MERIT (n. TOF 11) Experiment Study single beam pulses with intensities >30 TP l Study influence of solenoid field strength on Hg jet dispersal (Bo from 0 to 15 T) l Study 50 Hz operations scenario l Study cavitation effects in the Hg jet by varying PS spill structure—Pump/Probe l First beam expected April 2007 l Confirm Neutrino Factory targetry concept l Harold G. Kirk