SUPERKAMIOKANDE ACRONYM DICTIONARY

RJ Wilkes, 3/2/95

Under construction, please send suggested additions to RJW.

ADC	Analog-to-digital converter
CD	Central detector, see ID
DAQ	Data AQuisition system
Fastbus	A standard system for mounting, controlling and interfacing
	fast electronics for particle physics applications; historical
	successor to NIM and CAMAC and providing the highest density of 
	channels per module.
FDDI	Fiber-optic high rate data bus for local area networks.
FIFO	First-in, first-out, a pipeline buffer.
FSCC	Fastbus Smart Crate Controller
GPS	Global Positioning System, a satellite system which allows 
	receivers to compute position on earth to a few meters, and absolute
	UTC to 100 nsec.
ID	Inner Detector (or Central Detector)
IRIG	Standard coding system for clock data, allowing 
	manufacturer-independent transfer of time data.
LIFO	Last-in, first-out, a stack buffer.
OD	Outer Detector (US contribution to Superk)
pe	Photoelectron; one photon produces 1 pe in the PMT photocathode 
	with about 25% efficiency.
PMT	Photomultiplier tube
TDC	Time-to-digital converter
UTC	Universal Time (Coordinated), international standard version of 
	GMT commonly used for astronomical event logging.
VME	A widely used computer bus standard which allows interfacing of 
	external equipment to computers.
VSB	A less-widely used bus used for interfacing industrial equipment.
WLS	Wavelength shifter, a doped acrylic plate which converts UV to 
	longer-wavelength light; used in SuperK to increase the collecting area 
	of the relatively small OD PMTs