The MINA ProjectThe MINA Project

Model of an Intense Nonscaling Accelerator

Hadron

HH

Beam ParametersBeam Parameters Injection Extraction

Kinetic Energy, keV 218 817Momentum, keV/c 520 1,226Magnetic Rigidity, G-m 17.34 40.89Revol. Freq., MHz 11.81 15.20Revolution Period, µs 0.085 0.066Repetition Rate, Hz 2.5 – 5.0No. Electrons / Cycle 5.5 x 1011

Full Emittance, norm., π mm-mrad 100 Space-Charge Circulating Current, mA 103 134Number of Injected Turns 100Injection Period, µs 10

SBIR-MINHASBIR-MINHA

Circumference 18.1097 m

Number of Periods 48

Period Length 37.73 cm

Long Drift (2s) 16.11 cm

Short Drift (g) 1.907 cm

F-sector Length 4.450 cm

Field at inj. –19.04 G

Gradient 3.58 kG/m

D-sector Length 8.900 cm

Field at inj. 44.55 G

Gradient –3.14 kG/m

cm

m

• Tracking studies of Sandro’s lattice with ICOOL

Tracking SimulationsTracking Simulations

Figure 1: Phase space plots from tracking 20 particles at injection (top) and extraction (bottom) momenta.

Tracking SimulationsTracking Simulations

• Tune variation versus momentum– Solid lines are matrix calculations, points are

from tracking

MagnetsMagnets• Evaluated conventional, PM and Current-

dominated (Panofsky) quads using Printed Circuit (PC) board coils.Quad Type Conventional Permanent

MagnetPanofsky (PC)

Aperture 5 cm dia. 5 cm dia 5 cm X 2 cm

Outer size > 15 cm OD 10 cm OD 10 X 5 cm

Excitation 100 Amp-turns NeFeB 1.2 T 54 Amp-turns

Cost ea. $3,500 $2,500 $500

Advantages • Adjustable• Scalable to large size• Good field quality

• Small size• Low cost• No power supplies

• Adjustable• Small size• Low cost• Shorter end-fields

Disadvantages • Expensive• Large and heavy

• Not (easily) adjustable

• Unproven design

MagnetsMagnets

• Shown here are copper coils, however for the required field, PC boards would suffice

Phase II ObjectivesPhase II Objectives

• Design magnets; build octant (6 Periods)• Design, build, purchase diagnostics and

gun• Perform experiment with octant and gun• Test ferrites and broadband materials

(finemet etc)• Design cavity for Phase III• Design/cost Phase III Model