Experiments on the UM 1-MA linear transformer driver facility

Summary form only given. Experiments are underway at UM on the first 1-MA LTD to be operated in the USA following its development at the Institute of High Current Electronics in Tomsk, Russia. This LTD employs 80 capacitors and 40 spark-gap switches arranged in 40 "bricks" that each generate 25 kA when charged to +-100 kV. Initial experiments at UM generated nearly 1-MA into resistive loads with the LTD load region filled with SF6. A vacuum transmission line has been fabricated and is being tested with low-inductance resistive loads. Two plasma physics experiments have been designed and are under construction and testing: 1) Posthole convolute experiments will characterize the effects of plasma closure on the performance of vacuum convolute current adders. 2) Magneto Rayleigh-Taylor instability experiments will utilize thin, planar metal foil loads to study instability generation, seeding and mitigation. Experimental results will be presented for comparison with circuit models and MAGIC code simulations.