A agree Se ee eeee crebee eb bd ey eet ditto abn ee"halla datas i " : Sahn Md, Attachment The need for capital equipment and the items to be purchased are described in the following paragraphs. ne pe Item 10 $61 3F sd Total bl ee DOES II Shanthi hia necessary to resort to manual reduction of the measurement data which, obviously, will severely limit the number of samples that can be analyzed. The first step in the replacemént process is to acquire a new data and analysis system that can accommodate the three Ge(Li) diode units. A single input system, but one that can accommodate the three additional “units is available for $31,500. The integral parts of the system are an analog to digital converter (ARC), a direct memory access unit (DMA), a catnode ray display tube, a disc storage unit, a data processor, and a terminal. With this addition one Ge(Li) diode detector unit would be on line with the new [oo C) ™, NES TE PEETT TT To maintain the integrity of our gamma spectrum measurement and data processing systems, the time has arrived for replacement of the old multi-channel analyzers and the PDP-5. ape re pene "PEA APT : 1 same vintage as the PDP-5 and suffer from the same ailments. If an old multichannel analyzer breaks down and is not reparable, then one system is out of action; if the PDP-5 breaks down and is not reparable,. then it will be bidenSainat are not now available. Except for one, the multi-channel analyzers are of the oF surplus several years ago and it has served us well but many parts have reached or exceeded their life expectancy and replacements (transitors, drum, etc.) > Our three Ge(Li) detection and measurement systems are our most used systems and-are in constant operation 24 hours per day, every day. However, the detectors are coupled with old multi-channel analyzers and interfaced with a PDP-5. The PDP-5 is an old model computer that was acquired from government system and two would reniain on the old system; however, this addition also provides the potential for the addition of three other units. — The second step is the addition of the other two Ge(Li) diode detection units to the single input data and analysis system of Option A. This action would transfer al] three of the Ge(Li) units now on hand from the old multichannel analyzers and PDP-5 to the new system. The cost of the addition cf the first unit is $6,500 (ADC, DMA, software, 12K memory) and of the second unit, $4,000 (ADC and DMA, only); the combined cost is $10,500. The third step is the addition at some later time, of a fourth and final ek aR one tote aaE —— te ee aa wr} unit which could accommodate detectors of one of various types--Ge(Li) diode, alpha diode, x-ray or sodium iodide,