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The profitable acceptance take a look at at Marconi was witnessed March 8, 2001 and the klystron has since arrived at SLAC in good condition. After i arrived back in England I went for an interview at the National Physical Laboratory to search out out more concerning the job that that they had supplied me. Magnet Testing Several dipole and quadrupole magnets have arrived from Beijing. At the current time preparations are being made to buy elements for the dipole system components which can be impartial of the power take a look at. After the 600 V, 400 A rankings are efficiently demonstrated, what is control cable all the elements needed to build 4 modules shall be launched for fabrication. The transformer was launched for fabrication and is expected onsite in June 2001. Large Power Supplies There are 6 massive power supplies wanted for SPEAR 3. These are freestanding power provides with output rankings larger than 35 kW. The facility supply service and scores are tabulated beneath. Examples are the facility supply controllers, module chassis elements, transductors, and so on. Below are some photos of PEP II chopper equipment that can be replicated for the SPEAR 3 Dipole Power System. Front and Rear Views of PEP II-Chopper Modules Dipole Power Transformer Neeltran has resubmitted the Dipole Power Transformer electrical and mechanical drawings, incorporating SSRLs earlier feedback.

The laptop computer's power cable/AC-DC adapter has a transformer that can introduce digital harmonics that get carried to the computer and then to the USB cables plugged in to the laptop. What type of recordings can I make with the WinTV-HVR-1250? The reverb sort and time might be controlled with just one knob, and the reverb can be applied to the first four channels. The ceramic windows had a defective first braze take a look at, indicating a loss of the know-how at an exterior vendor. Fabrication of cavity equipment at SLAC like ceramic home windows and better order mode masses is making rapid progress. Upon completion of profitable testing, the precision BitBus controllers shall be launched for fabrication throughout the next reporting period. Cavities During a site visit to Accel Instrumentation in Germany in March 2001, progress on the fabrication of four RF cavities was checked. Progress in design of instrumentation and management techniques for the SPEAR three challenge continued, and some parts have been acquired. The actual 22.5 W , excessive voltage cable that will be installed in SPEAR can be despatched to the cable store to be lower to size inside the next week. MCOR30 Crate With The Prototype Bipolar Power Supply Pulsed Power Supplies Kicker Pulsers A four-stack model of the SPEAR three kicker pulser has been constructed and is now in excessive voltage testing in the power Conversion Department (PCD).

Details shall be decided in a review within the second quarter 2001. Also, for the MCOR30 design, several parts (ADCs, DACs and multiplexers) have been evaluated and efficiently examined and characterized. Design of the cable tray system was once more the dominant activity during this last quarter. Several minor changes have been made to the mechanical design of the core meeting, to eliminate a propensity for prime voltage arcing, poor connections to the load resistor, and to reduce issue in aligning the core stacks. The design of a more rigid connection of the excessive voltage flange to the resistor load has been accomplished. Higher charge voltages weren't examined as a result of some excessive voltage arcing was evident from the IGBT driver board to the core meeting. Prototype Kicker Pulser Output Current At 1250 V Charge A layout for the digital enclosure for the modulator core meeting and board has started. Below are photos of the prototype, and output current waveforms for a 1250 V charge.

One weakness of this circuit is that energy from a four pin Molex connector on the Pc's energy provide output must be applied to pin 20 of the GAL. Some steps to finalize the design of the SPEAR3 corrector supply controls have been made. Computer Control System For pc management of the SPEAR3 essential and intermediate power supplies, the communication between a brand new business VME Bitbus interface and the PEP2 Bitbus power provide controller (which might be used for SPEAR3) has been successfully tested. A preliminary power provide specification sheet is available, primarily based on test results of the prototype. Bipolar Power Supplies Testing of the prototype MCOR30 fast corrector bipolar power supply was profitable. It appears like we're going to be able to use a commercial VME CPU module in every corrector crate and have a serial digital communication between this crate controller and each MCOR30 module. The plan is to construct an operational full crate of eight energy provides by late May.