BNL FNAL LBNL SLAC LQ Collaboration Video Meeting

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BNL - FNAL - LBNL - SLAC LQ Collaboration Video Meeting July 11, 2008

BNL - FNAL - LBNL - SLAC LQ Collaboration Video Meeting July 11, 2008 LQ 03 Titanium Pole Length Study Fred Nobrega LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega

LQ 03 Ti-6 Al-4 V Pole Length Change After Reaction LQ Video-Mtg July 11,

LQ 03 Ti-6 Al-4 V Pole Length Change After Reaction LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 2

LQ 03 Ti-6 Al-4 V Pole Length Change After Reaction • Inner coil pole

LQ 03 Ti-6 Al-4 V Pole Length Change After Reaction • Inner coil pole length change average = -17 mils ±. 004, (s =. 003) • Outer coil pole length change average = -2 mils ±. 007, (s =. 004) LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 3

LQ 03 Pole Length Change with Temperature and Load • Measured length change after

LQ 03 Pole Length Change with Temperature and Load • Measured length change after heat treatment of LQ 03 L 1 pole at 650° C for 60 hours in free state and under load. » Used tube furnace to HT parts from LQ 03 and from stock at 650° C for 60 hours in free state • 2 x L 1 parts from LQ 03 and 2 parts from stock • 2 x L 2 parts from LQ 03 and 2 parts from stock • 2 x layer jump assemblies from stock » HT’ed 1 part from L 1 and 1 part from stock under load and measured length change. LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 4

LQ 03 L 1 Pole Pieces After Reaction LQ Video-Mtg July 11, 08 LQ

LQ 03 L 1 Pole Pieces After Reaction LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 5

LQ 03 L 1 Pole Length Change w Time 0 15 24 32 After

LQ 03 L 1 Pole Length Change w Time 0 15 24 32 After LQ 03 coil reaction LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 6

Pole Pieces From Stock After HT LQ Video-Mtg July 11, 08 LQ 03 Ti

Pole Pieces From Stock After HT LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 7

LQ 03 Ti-6 Al-4 V Pole Length Change After Reaction • HT LQ 03

LQ 03 Ti-6 Al-4 V Pole Length Change After Reaction • HT LQ 03 L 1 pole & part from stock in steel clamp with 1200 lb compressive load L 1 pole from stock LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 8

Clamped L 1 Pole From LQ 03 & Stock on 6/12/08 *Argon was lost

Clamped L 1 Pole From LQ 03 & Stock on 6/12/08 *Argon was lost at some point during the 60 hour heat treatment. LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 9

Impregnation HT Cycle & Cooled to LN 2 • No change in length with

Impregnation HT Cycle & Cooled to LN 2 • No change in length with HT of 125 C for 24 hours • All parts cooled to LN 2 temperatures returned to original length LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 10

Next Step(s) • Inspect with the CMM the clamped L 1 parts that lost

Next Step(s) • Inspect with the CMM the clamped L 1 parts that lost argon during HT for dimensional changes. Parts may need to be replaced. • Repeat clamped L 1 part HT LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 11

Conclusions • Ti-6 Al-4 V pole length change after reaction is not permanent. Slow

Conclusions • Ti-6 Al-4 V pole length change after reaction is not permanent. Slow length change occurs when compressive load is removed • Ti-6 Al-4 V pole length change in free state with 650° C HT grows to near it’s original length • Length change is not dependant on the manufacturing processes used. Layer jump parts were machined and pole parts were EDM’ed with some grinding to bring parts within tolerance. • 3 different raw material Heats used for all parts not dependent on part length change. • Stock parts did not change length with HT in free state. • LQ 03 L 1 pole length change was due to HT and load. • Ti-6 A parts tend to creep/relax to original length LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 12

LQ Ti-6 Al-4 V Parts 461136 4117 74 4610 85 461134 41182 2 LQ

LQ Ti-6 Al-4 V Parts 461136 4117 74 4610 85 461134 41182 2 LQ Video-Mtg July 11, 08 LQ 03 Ti Pole Length Study, Fred Nobrega 13