7606

High-temperature boron-lined uncompensated ionization chamber for thermal-neutron detection. Designed for operation to about 500°F, it uses guard-ring construction to reduce insulator leakage and is rugged enough for demanding reactor instrumentation environments.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

Westinghousé’ WL-7606 Decembar 1, 1959 HIGH TEMPERATURE UNCOMPENSATED IONIZATION CHAMBER TYPE WL-7606 The WL-7606 is an aluminum cased ionization chamber designed to detect thermal neutrons in the flux range from 2.5 x 10% to 2.5 x 10" neutrons/cm?/second. lonization currents are produced by thermal neutrons incident on the sensitive coating, which consists of Boron enriched to 96% in B-10 isotope. The neutron sensitivity of the WL-7606 is 4.4 x 107'% amperes/neutron/cnf /second and the gamma sensitivity is 5 x 10°!" omperes/Roentgen/ hout, The tube is provided with type "HN'' connectors and is extremely rugged, being operable in any position and at temperatures up to 500 *F. The WL-7606 employs a guard ring type of construction. This feotures minimizes reduction in signal current due to leckage through the insulators. MECHANICAL: ELECTRICAL: Maximum Diameter . . ... ... .. .. ... e 3 Inches Interelectrode Capacitancas: Maximum Overall Length . . . . . .. ... vove. 13:3/4 Inches Signal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

IonizationChamber

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Source-derived physical/electrical section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1947 Westinghouse

Published operating points and test conditions from this source.

SECTION 1

IonizationChamber

Other

2.5 x 10% to 2.5 x 10" neutrons/cm?/second. lonization curre
10
2.5 x 10% to 2.5 x 10" neutrons/cm?/second. lonization currents are produced by thermal neutrons incident on
WL
10
WL-7606 is 4.4 x 107'% amperes/neutron/cnf /second and the gamma sensitivity is 5 x 10°!" omperes/Roentgen/
Approx, Sensitive Length
170
Approx, Sensitive Length .. . .. .. ........ 7-1/2 Inches High Voltage Electrode t0 Case® . . ... ........ 170 pud
Net Weight . . .. ...... e e e e
500
Net Weight . . .. ...... e e e e . 2.1/2 Pounds At 500° F
Shipping Weight. . .. .. ... S e e e
10
Shipping Weight. . .. .. ... S e e e 10 Pounds Signol Electrode to Case. . . . ... .. .. ... 10° min. Ohms
High Voltage Electrode to Case
109
High Voltage Electrode to Case . .. .. .. .. 109 min. chms
Gas Filling. . . . .. v e .. Argon-Nitrogen Mixture at
76
Gas Filling. . . . .. v e .. Argon-Nitrogen Mixture at 76 cm Hg
Mates With Amphenol Thermal Neutron Flux
10
Mates With Amphenol Thermal Neutron Flux. ... ...... 1.0%10"" mox. n/em?/sec
of equivalent. Ambient Temperature
500
of equivalent. Ambient Temperature . . .. ...... 500 max, °F
'
200
'3| Operoting Yoltoger: . . . ... ... 200toBO0 Volts
1 Thermal Neutron Flux. .. 2.5x10%102.5%1019 n/em2/sec
1019
1 Thermal Neutron Flux. .. 2.5x10%102.5%1019 n/em2/sec
Neutron Sensitivity. . ... .. veo
10
Neutron Sensitivity. . ... .. veo. 4.4%10'% omp/n/em ¥sec
Gamma Sensitivity
1071
Gamma Sensitivity . .. ... ... . 5% 1071 amp/R/hr
For Neutron Flux of
109
For Neutron Flux of 3x 109n/cni® /sec
Operating Voltage . . .. ... e e
250
Operating Voltage . . .. ... e e 250 min, Volts
Output Current . . . ... e e
1074
Output Current . . . ... e e 1L3x 1074 Amperes
For Neutron Flux of
109
For Neutron Flux of 1.5% 109 n/cm? /sec
O\_/ |
600
O\_/ |2% Operating Voltage . . . .. ... .. ... 600 min. Yolts
Qutput Current . . . . .« . iv v anan
1074
Qutput Current . . . . .« . iv v anan 6.6% 1074 Amperes
7} O Saturation voltoge varies with neutron fHux. Either pos
7
7} O Saturation voltoge varies with neutron fHux. Either positive or