National Institute of Standards & Technology, Acquisition & Assistance Div., Bldg. 301, Rm B117, Gaithersburg, MD 20899

66 -- NEUTRON TIME-OF-FLIGHT DATA ACQUISITION SYSTEM !! SOL 52SBNB7C1063 DUE 022297 POC Paul Cataldo (301)975-6332/C.O. Joan Smith (301)975-6458 WEB: NIST Contracts Homepage, http//www.nist.gov/admin/od/contract/contract.htm. E-MAIL: NIST Contracts Office, Contract@mailserver3.nist.gov. The National Institute of Standards and Technology (NIST) has a requirement for a high performance VME based data acquisition system for the High Flux Backscattering Spectrometer at NIST's Cold Neutron Research Facility. This system shall be capable of accumulating 32 channels of 200 MHz ECL input from a neutron detector system in 10 microsecond intervals with a 99% or better active duty cycle (1% maximum deadtime interval). Simultaneously, and at the same 100kHz sampling frequency, this system shall measure two channels of analog input (0 -- 10 volts) with the equivalent of 10 bits of resolution (better than 0.1% accuracy) and 1 channel of 8 bit digital ECL I/O. For each sampling event, the data acquisition system shall make a series of real-time arithmetic calculations based on the analog input measurements. These calculations shall be performed by a Motorola 96002 DSP based signal processor. Based on these calculations the system shall sort the incoming 32 channels of detector data into an array representing the number of events per detector per energy transfer bin. The system shall also monitor, in real-time, the 8 bits of digital I/O to determine if the incoming data is valid and suppress the above data storage if it is invalid. The system shall provide user control through a computer interface which includes real-time status information, memory contents in graphic form, and user control options. Furthermore, the computer interface shall be capable of receiving control commands and transmitting data to a host computer via a SCSI/Ethernet interface. The Contractor shall provide on-site installation and training. Required delivery 90 days. All responsible sources may submit a proposal which will be considered by the agency. Solicitation requests should be submitted in writing to fax number 301-963-7732. (0023)

Loren Data Corp. http://www.ld.com (SYN# 0300 19970127\66-0003.SOL)