Detectors

Hamamatsu Tubes Tested at GHz Count Rates

Two Hamamatsu tubes are available with GHz count rates. The following photomultiplier tubes have been tested at tube-limited speeds:

Tube	Manufacturer	Wavelength	Risetime	Notes
R5600-01	Hamamatsu	300–820 nm	0.65 ns	Module
R3091	Hamamatsu	300–500 nm	0.4 ns	1″ SMA head-on tube
R928p	Hamamatsu	185–900 nm	2.2 ns
R647	Hamamatsu	300–650 nm	2 ns
R7400U-04	Hamamatsu	185–850 nm	0.78 ns
R7400U-02	Hamamatsu	300–880 nm	0.78 ns
R1784	Hamamatsu	185–680 nm	0.9 ns
R2949	Hamamatsu	185–900 nm	2.2 ns	Low dark count R928
H6780-02	Hamamatsu	300–880 nm	0.78 ns	Module R7400U-02
HC123-01	Hamamatsu	—	—	Powered socket for 1⅛″ side-on PMTs
H13661	Hamamatsu	300–650 nm	0.23 ns	0.430 ns width — Tested at Gigahertz count speed
R10467U-40	Hamamatsu	—	0.4 ns	Hybrid 45% QE
H14447	Hamamatsu	300–650 nm	0.35 ns	Various high QE cathodes available

Dual Hamamatsu Hybrid PMT Power Supply