equipment driven by the printer. When the two codes compare, the hammer is en~r­ gized. The important thing is to get the print hammer thyratron fired at the right time. As long as the sum total of all the operations you do beforehand achieves that, you get the right character. Lt. R. S. Weinberg (Air Materiel Command, United States Air Force): Can you relate something of the service experience...

Engineering aspects of electron and positron injection, storage and extraction in a damping ring of an injection complex are described. Symmetrical strip-line type kickers are used in quasi-traveling wave mode. A generator of a pair of negative and positive polarity pulses bases on two double pulse forming network (DPFN). Both DPFN are charged up to 50 kV using a common pulse transformer. Every...

A multiple-circuit high pulse repetition frequency (PRF) pulse generator for the pumping of rare gas halide lasers is reported. With this multiple-circuit design, high PRF can be achieved by the use of existing low PRF thyratron switches and capacitors. A two-circuit pulse generator was constructed, and its performance is described. By means of this pulse generator and a blowdown-type fast tran...

Technology demonstrations of key components at LANL for the Dual-Axis Radiographic Hydro Test (DARHT) Facility including the turnkey Induction Cell Pulsed Power Supply (ICPPS) delivered by Maxwell have been in progress at the DARHT Integrated Test Stand (ITS) for over three years. The prototype system has accumulated >35,000 shots to date with no component failures and only minor system malfunc...

Two LHC injection kicker magnet systems must produce a kick of 1.3 T.m each with a flattop duration of 4.25 μs or 6.5 μs, a rise time of 900 ns, and a fall time of 3 μs. The ripple in the field must be less than ±0.5%. The electrical circuit of the complete system has been simulated with PSpice[3]. The model includes a 66 kV resonant charging power supply (RCPS), a 5 Ω pulse forming network (PF...

The procedure used to assay the potency of antifibrillatory drugs has been described by DiPalma and colleagues. A brief summary will suffice for this report. Cats weighing between 2 and 3 Kg. were anesthetized with intraperitoneal Dial (Ciba). Artificial respiration was maintained at an even level with a suitable pump, and the heart was exposed and suspended in :i pericardinl cradle. Clip elect...

Solid-state modulators for pulsed power applications have been a goal since the first fast high-power semiconductor devices became available. Recent improvements in both the speed and peak power capabilities of semiconductor devices developed for the power conditioning and traction industries have led to a new generation of solid-state switched high power modulators with performance rivaling th...

The fluctuation of the beam current and energy had been investigated from ’98 to ’99. As a result, readjustment of klystron modulators and temperature stabilization were made so as for the RF system to obtain the phase and amplitude stability. Finally, the beam energy fluctuation of ±0.03% (1σ) was achieved and good reappearance of the injection current was obtained. A beam chicane and an accel...

Power modulators for pulsed microwave applications, generally utilizing a thyratron-switched PFN, typically produce 50-120 kV, 1-2 kA microsecond timescale pulses with sub-microsecond ( -100-200 nsec) risetimes. This paper will review an investigation into the feasibility of utilizing certain solid-state power switches at the relatively fast speeds required for HPM modulators. Two very differen...