Rutgers 12-inch Cyclotron

Timothy Koeth & Stuart Hanebuth

www.physics.rutgers.edu/~koeth/cyclotron

ANL: The 12 inch at the 60 inch

1950 Above

1998 at Right

The 12 Inch Magnet

Loading the Magnet at ANL

12inch Restoration

12 Inch Restoration

Meanwhile, at Stu’s Fab Shop…

If a Job’s Worth Doing…

Coil Repair: 40V @ 50 A !

Progress !

The Vacuum Chamber & DEE

DEE: 10 inch diam.

Gap: 0.25 inch

It’s Starting to Fit Nicely !

A Little Bit About the RF Oscillator

• We know that:

f = qB/2m

• The DEE has capacitance C so L is choosen:

 fr=1/2(LC) • For 1p1 & 1 Tesla B-field the fr ~ 15 MHz (RF)

Cyclotron RF

RF Antenna to Monitor DEE

Brief RF Drive & Ringing of Cyc.

High Vacuum System: 1E-6 Torr

Ion SourceFil: 5 Amps

Bias: -300 V

Emission I: 100mA

Ion Source

Ion Collector

Hurricane Floyd: RUN 91699C

Hurricane Floyd: RUN 91699C

Student Involvement.

Latest Project: Beam Focusing

Beam Focusing Project: Step 11st 40 Amp B-field map (7.17.02)

Pole Piece EdgeMax Ion Radius

0

0.2

0.4

0.6

0.8

1

1.2

1.4

-2 0 2 4 6 8 10

Radial distance (inches)

B-f

ield

(T

es

la)