Pulsed ionizing-radiation detectors

ССДИ8М scintillation detectors

ССДИ8М (ССДИ8М-01, ССДИ8М-02, ССДИ8М-03) detectors are special-purpose measuring instruments (certificate RU.С.38.046.А No. 44828) designed for recording of gamma radiation pulses of 10⁷ to 10¹⁴ quanta/cm² flux density.
The detectors include: photoelectron multiplier СНФТ3 (for design versions ССДИ8М and ССДИ8М-02) or СНФТ5 (for design versions ССДИ8М-01 and ССДИ8М-03); Ø50х100 mm2 plastic scintillator; and a set of spare parts. The detectors’ sensitivity can be adjusted using light filters from the set of spare parts.
Operational environment for the detectors: ambient temperature from minus 30оС to plus 50оС; relative humidity up to 98% at 25оС temperature.

Technical characteristics

	ССДИ8М (ССДИ8М-02)	ССДИ8М-01 (ССДИ8М-03)
Maximum sensitivity to gamma radiation Еγ=1.25 MeV, A∙cm2·s/quantum, at least	10-10	10-12
Sensitivity adjustment range, times, at least	100	100
Maximum linear current in pulse, A, at least	2,5	2,5
Time resolution (t0.5), ns, not more than	10	10
Maximum duration of recorded pulses, µs,	3 (20)	3 (20)
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±30	±30
Supply voltage, kV	минус 4,0	минус 3,3
Output signal polarity	отрицательная	отрицательная
Weight, kg, not more than	2,6	2,5
Overall dimensions, mm, not more than	Ø110×420	Ø110×400

ССДИ34 two-channel high-sensitive scintillation detector

The detector is a special-purpose measuring instrument (certificate RU.С.38.046.А No. 17290) designed for recording of gamma and neutron radiation pulses within the flux density range 10⁵ до 10¹⁰ particles/cm²·s. A large-volume plastic scintillator is used in the detector in order to reduce the level of statistical fluctuations of the output current when recording low-intensity radiation.
The detector configuration includes: two photomultipliers ФЭУ-139 and Ø150×400 mm² mm2plastic scintillator. The detector sensitivity is adjusted by means of varying the supply voltage of ФЭУ-139 and using a set of optical filters from the set of spare parts.
The detector operating conditions: ambient temperature from minus 10оС to plus 40оС; relative humidity up to 98% at 25оС temperature

Technical characteristics

Maximum sensitivity, A∙cm2·s/particle, at least: - Еγ=1.25 MeV gammas - Еn=14.5 MeV neutrons	4·10-9 1,5·10-8
Sensitivity adjustment range, times, at least	200×2
Maximum linear current in pulse, A, at least	0,3
Time resolution (t0.5), ns, not more than	35
Maximum duration of recorded pulse, µs	100
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±25
Supply voltage, kV	minus (1,6-2,0)
Output signal polarity	negative
Weight, kg, not more than	13
Overall dimensions, mm, not more than	Ø170×810

ССДИ35 high-sensitive scintillation detector

The detector is a special-purpose measuring instrument (certificate RU.С.38.046.А No. 44829) designed for recording of gamma and neutron radiation pulses within the flux density range 10⁶ to 10¹¹ particles/cm²·s.
The detector configuration includes: СНФТ3-01 photomultiplier, Ø63×63 mm², plastic scintillator. The detector sensitivity is adjusted by means of СНФТ3-01 dynodes bypassing and using a set of optical filters from the set of spare parts.
The detector operating conditions: ambient temperature from minus 10оС to plus 40оС; relative humidity up to 98% at 25оС temperature.

Technical characteristics

Maximum sensitivity, A∙cm2·s/particle, at least: - Еγ=1.25 MeV gammas - Еn=14.5 MeV neutrons	10-9 2·10-9
Sensitivity adjustment range, times, at least	100
Maximum linear current in pulse, A, at least	1,0
Time resolution (t0.5), ns, not more than	25
Maximum duration of recorded pulse, µs	30
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±30
Supply voltage, kV	minus 4,0
Output signal polarity	negative and positive
Weight, kg, not more than	2,5
Overall dimensions, mm, not more than	Ø115×475

ССДИ36 three-channel high-sensitive scintillation detector

The detector is designed for recording of gamma and neutron radiation pulses within the flux density range 10⁵ to 10¹¹ particles/cm²·s. A large-volume plastic scintillator is used in the detector in order to reduce the level of statistical fluctuations of the output current when recording low-intensity radiation.
The detector configuration includes: three photomultipliers ФЭУ-97, Ø120×100 mm²plastic scintillator, built-in LED for checking the detector functioning, and a removable lead hood. The detector sensitivity is adjusted by means of ФЭУ-97 dynodes bypassing and using a set of optical filters from the set of spare parts.
The detector operating conditions: ambient temperature from minus 10оС to plus 40оС; relative humidity up to 98% at 25оС temperature.

Technical characteristics

Maximum sensitivity, A∙cm2·s/particle, at least: - Еγ=1.25 MeV gammas - Еn=14.5 MeV neutrons	2·10-9 7·10-9
Sensitivity adjustment range, times, at least	150×3
Maximum linear current in pulse, A, at least	0,4
Time resolution (t0.5), ns, not more than	25
Maximum duration of recorded pulse, µs	30
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±25
Supply voltage, kV	minus 2,3
Output signal polarity	negative
Weight, kg, not more than	4
Overall dimensions, mm, not more than	Ø140×300

ССДИ37 small-size high-sensitive scintillation detector

The detector is a special-purpose measuring instrument (certificate RU.С.38.046.А No. 35317) designed for recording of gamma and neutron radiation pulses within the flux density range 10⁶ to 10¹¹ particles/cm²·s.
The detector configuration includes: ФЭУ-97 photomultiplier, Ø63×63 mm²; plastic scintillator, built-in LED for checking the detector functioning, and a removable lead hood. The detector sensitivity is adjusted by means of ФЭУ-97 dynodes bypassing and using a set of optical filters from the set of spare parts.
The detector operating conditions: ambient temperature from minus 10оС to plus 40оС; relative humidity up to 98% at 25оС temperature

Technical characteristics

Maximum sensitivity, A∙cm2·s/particle, at least: - Еγ=1.25 MeV gammas - Еn=14.5 MeV neutrons	5·10-10 1,5·10-9
Sensitivity adjustment range, times, at least	200
Maximum linear current in pulse, A, at least	0,4
Time resolution (t0.5), ns, not more than	20
Maximum duration of recorded pulse, µs	30
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±25
Supply minus 2,0
Output signal polarity	negative and positive
Weight, kg, not more than	1,6
Overall dimensions, mm, not more than	Ø85×260

ССДИ38 fast high-sensitive detectors

Detectors ССДИ38 (75 Ohm wave resistance of output path) and ССДИ38-01 (50 Ohm wave resistance of output path) are special-purpose measuring instruments (certificate RU.С.38.046.А No. 35316) designed for recording of gamma and neutron radiation pulses within the flux density range 10⁸ до 10¹⁴ particles/cm²·s.
The detectors configuration includes: СНФТ18M photomultiplier, removable sensing elements – two Ø63×63 mm²plastic scintillators, and a set of spare parts. The detectors sensitivity is adjusted by means of СНФТ18M dynodes bypassing, using optical filters, and by replacing sensing element using the set of spare parts.
The detector operating conditions: ambient temperature from minus 40оС to plus 50оС; relative humidity up to 98% at 25оС temperature

Technical characteristics

	ССДИ38	ССДИ38-01
Maximum sensitivity, A∙cm2⋅s/particle, at least: : - Еγ=1.25 MeV gammas - Еn=14.5 MeV neutrons	5·10-12 1,5·10-11	5·10-12 1,5·10-11
Sensitivity adjustment range, times, at least	50	50
Maximum linear current in pulse, A, at least	0,5	0,5
Time resolution (t0.5), ns, not more than: - with scintillators - with Cherenkov radiator	5 (2,5) 1,5	4,5 (2) 1,3
Maximum duration of recorded pulse, µs	1,5	1,5
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±25	±25
Supply voltage, kV	minus 5,0 and plus 1,8	minus 5,0 and plus 1,8
Output signal polarity	negative	negative
Weight, kg, not more than	7,5	7,5
Overall dimensions, mm, not more than	Ø150×400	Ø150×400

ССДИ39 low sensitive scintillation detector

The detector is a special-purpose measuring instrument (certificate RU.С.38.046.А No. 34897) designed for recording of high-intensive pulsed gamma and neutron radiation within the flux density range 10¹² to 10¹⁸ particles/c^m2·s.
The detector configuration includes: СДФ20 photomultiplier, two removable Ø63×63 mm² plastic scintillators (of different specific light yield and response speed), and a removable lead hood. The detector sensitivity is adjusted by means of optical filters, and by replacing scintillator using the set of spare parts.
The detector operating conditions: ambient temperature from minus 10⁰С to plus 40⁰С; relative humidity up to 98% at 25⁰С temperature.

Technical characteristics

Maximum sensitivity, A∙cm2⋅s/particle, at least: : - Еγ=1.25 MeV gammas - Еn=14.5 MeV neutrons	2·10-16 7·10-16
Sensitivity adjustment range, times, at least	100
Maximum linear current in pulse, A, at least	8
Time resolution (t0.5), ns, not more than	5,5 (1,5)
Maximum duration of recorded pulse, µs	1
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±15
Supply voltage, kV	minus 1,8
Output signal polarity	positive
Weight, kg, not more than	1,6
Overall dimensions, mm, not more than	Ø110×170

ССДИ40 scintillation detector

The detector is a special-purpose measuring instrument (certificate RU.С.38.046.А No. 44830) designed for recording of pulsed gamma radiation within the flux density range 10¹⁰ to 10¹⁶ particles/cm²·s.
The detector configuration includes: СНФТ22 photomultiplier, two removable Ø63×63 mm²plastic scintillators (of different specific light yield), and a set of spare parts. The detector sensitivity is adjusted using optical filters and by replacing scintillator using the set of spare parts.
The detector operating conditions: ambient temperature from minus 10⁰С to plus 50⁰С; relative humidity up to 98% at 25⁰С temperature.

Technical characteristics

Maximum sensitivity to Еγ=1.25 MeV gammas, A∙cm2⋅s/photon, at least	10-14
Sensitivity adjustment range, times, at least	50
Maximum linear current in pulse, A, at least	2,5
Time resolution (t0.5), ns, not more than	10
Maximum duration of recorded pulse, µs	20
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±25
Supply voltage, kV	minus 4,0
Output signal polarity	negative
Weight, kg, not more than	2,5
Overall dimensions, mm, not more than	Ø110×350

СЧДИ3 subnanosecond Cherenkov detector

The detector is a special-purpose measuring instrument (certificate RU.С.38.046.А No. 46412) designed for recording of high-intensive pulsed gamma radiation within the flux density range 10¹⁶ to 10²⁰ quanta/cm²·s.
The detector configuration includes: СДФ21 photomultiplier, Ø25×50 mm² quartz glass Cherenkov radiator, LED device for checking the detector functioning from the set of spare parts.
The detector operating conditions: ambient temperature from minus 30⁰С to plus 50⁰С; relative humidity up to 98% at 25⁰С temperature.

Technical characteristics

Sensitivity to Еγ=1.25 MeV gammas, A∙cm2⋅s/photon, at least	5·10-20
Maximum linear current in pulse, A, at least	2,5
Time resolution (t0.5), ns, not more than	0,25
Maximum duration of recorded pulse, µs	1
Maximum resultant error of conversion in operating conditions, % (for P=0.95)	±15
Supply voltage, kV	minus 1,5
Output signal polarity	positive
Weight, kg, not more than	0,25
Overall dimensions, mm, not more than	Ø50×100