Hybrid Twist

Strategy

• To improve hybrid twist we select two batches– First for immediate use require no

modifications. Spread of widths well within geometric tolerance (~60%)

– Second are higher twist and are first heat treated to reduce the twist and then mounted to account for the residual twist.

Hybrid Twist

Twist (mm)

-1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4

Cou

nt

0

1

2

3

4

5

6

7

= 0.244 ± 0.064mean =-0.136± 0.060

Heat treat

Batch 1 – non treated

Yield ~60%

Mean twist = -30m

rms = 130 m

Batch 2 – heat treat

Remaining will be heat treated and expect* those to have mean ~ 400 m and rms ~ 50 m based on limited stats. These will be mounted separately.

* Based on limited statistics of heat treating. High twist hybrids move to approx 500 micron twist.