Neutral Particle Sweeper Magnet Paul Brindza Nov 17, 2014

NPS on SHMS

View of NPS sweeping magnet from TOSCA

Field Integral – 0.3 TM

Stray field- beam side

Horizontal field deflector for neutral pion spectrometer- C/O Bogdan

Can we Modify the horizontal field magnet to work for NPS? Yes Open the yoke and reverse polarity of one coil We can make field integral for NPS However, the resulting magnet is not efficient losing about half the flux Resulting field on electron beam requires a coil that resembles the NPS coil!

C mag Vertical field version 0.3 TM

Spread of vertical field

Horizontal field 0.6 TM

Can we use the same DC power supply? Yes Neither Magnets’ “coil designs” are optimized or final designed We can easily make the requirements similar Example follows

Coil and DC supply stats. First pass NPS MagHorizontal field mag NI144,000465,000 Conductor area1 cm^2 Conductor size1.27 by 1.27 Cooling hole0.635 cm Φ Turns- total136 ( 4 x 17) (4 x 17)384 ( 8 x 24)(8 x 24) Coil size5.6 cm by 22.6 cm11.2 cm by 31.5 cm turn length, average275 cm248 cm Current1060 Amps1210 Amps resistance47.5 milli Ohms114 milli Ohms Voltage50 volts106 Volts Power53 KWatts128 KWatts

Weight and cost Coil weight 823 #(2 coils) Conductor length 1230 feet(3 pieces) Coil Cost- $69,000 – Conductor cost $13,000 – Coil tooling( winding form, VPI mold) $12,000 – Winding cost (labor) $6,000 – VPI (labor)$9,000 – Materials( epoxy, insulation) $5,000 – EDIA $ 15,000 – Shipping $3,000 – Profit $6,000

Weight and cost Iron weight 11,5 00 # (6 pieces)$ 143,000 – Steel $ 55,000 – Annealing $5,000 – Testing $3,000 – Machining $ 60,000 – Shipping$13,000 – Profit $7,000

Sweeper for neutral particle Spectrometer work to do Optimize iron and coil Collaborate on DC Power Supply Look for other sharing possibilities (yoke?) Design filed shield beam side Magnet cost estimate $ 212,000 Detail drawings Order when funds available