Глосарій

TAC (time-to-amplitude converter) /  Часово-амплітудний перетворювач
 An instrument that outputs the time difference between two pulse signals as a pulse amplitude (height).

Terahertz wave /  Терагерцова хвиля       
Electromagnetic waves at frequencies around 1 THz (wavelength: 300 μm). Terahertz waves transmit through paper, wood, and plastic but do not transmit through metal and water. The terahertz band is called the fingerprint region of substances.

Terminal capacitance /  Термінальна ємність      
In a photodiode, the PN junction can be considered as a type of capacitor. This capacitance is termed the junction capacitance and is an important parameter in determining the response speed. In current-to-voltage conversion circuits using an op amp, the junction capacitance might cause gain peaking. At Hamamatsu, we specify the terminal capacitance including this junction capacitance plus the package stray capacitance.

Thermistor /  Термістор       
A thermally sensitive resistor that greatly changes its electrical resistance as the temperature changes. Thermistors are used for temperature sensing.

Thermoelectric conversion material / Матеріал термоелектричного перетворення       
Material for converting heat into electricity. It makes use of the Seebeck effect, which describes how electromotive force is generated when the two ends of two different metals or semiconductors joined together are at different temperatures.

Thermoelectric cooler /  Термоелектричний охолоджувач       
When an electric current flows through the junction of two dissimilar electric conductors, heat absorption (or heat generation) occurs on one side while heat generation (or heat absorption) occurs on the other side. Thermoelectric coolers make use of this effect (known as Peltier effect). Reversing the direction of the electric current reverses the relation between the heat absorption and generation.

Tiling /  Плиткове розміщення
 An arrangement of two or more photosensors in a tile configuration to have a wider photosensitive area. Also called “buttable.”

Tracking detector (vertex detector) /  Трековий детектор      
A detector mainly used in elementary particle energy physics experiments for the purpose of tracking the traveling direction and decay processes of secondary particles generated as a result of high energy particle collisions. Tracking detectors are installed at positions surrounding the point where the particles collide.

Transit time / Час прольоту
The electron transit time is the time interval between the arrival of a delta function light pulse (pulse width less than 50 ps) at the photocathode and the instant when the anode output pulse reaches its peak amplitude.