SU598011A1

SU598011A1 - Quantum magnetometer sensor

Info

Publication number: SU598011A1
Application number: SU742061644A
Authority: SU
Inventors: Геннадий Васильевич Соколов; Татьяна Павловна Киселева
Original assignee: Предприятие П/Я В-8662
Priority date: 1974-09-23
Filing date: 1974-09-23
Publication date: 1978-03-15

Description

(54) ДАТЧИК КВАНТОВОГО МАтИТОМЕТРА(54) QUANTUM MOTOMETER SENSOR

II

Изобретение относитс к области измерени слабых магнитных honeft .объектов на фо не магнитного пол Земл , а именно к устройствам , обеспечивающим нормальную paбoчу магнитометра в широком интервале температур .The invention relates to the field of measurement of weak magnetic honeft objects on the ground of the magnetic field of the Earth, namely to devices that ensure normal operation of a magnetometer in a wide temperature range.

В датчиках квантовых магнитометров с оптической накачкой атомов щелочных металлов необходимо строго поддерживать посто нный тепловой режим в объемах чейки поглошени . Дл этого примен ют систел термостатировани , состо щую из терморегул тора , нагревательного элемента и тепповбй изол ции .In sensors of quantum magnetometers with optical pumping of alkali metal atoms, it is necessary to strictly maintain a constant thermal regime in the volumes of the absorbing cell. For this purpose, a temperature control system consisting of a thermostat, a heating element and heat insulation is used.

Известен датчик квантового магнитомет ра , состо щий из чейки поглощени , размещенной внутри теплоизоп овэнного корпуса, и системы термостатировани со схемой управлени . Посто нный тепловой режим чейки поглощени датчика поддерживаетс за счет периодического включени намотанного на нее нагревательного элемента L2J.A known sensor of a quantum magnetometer, consisting of an absorption cell, placed inside the heat-insulating body, and a thermostatic system with a control circuit. The constant thermal mode of the sensor absorption cell is maintained by periodically turning on the heating element L2J wound around it.

Однако конструктивные особенности чейки поглощени обусловленные наличием отростка , линейнъ1Й размер которого примерна However, the design features of the absorption cell are due to the presence of a process, the linear size of which is approximate.

равен ее диаметру, не позвол ет таким спо- собом обеспечить равномерный прогрев всей, поверхности - чейки поглощени , включа отросток . Это снижает точность измерени малых уровней-магнитных попей.equal to its diameter, does not allow such a method to ensure uniform heating of the entire surface — an absorption cell, including the appendix. This reduces the accuracy of measuring small levels of magnetic drink.

С цепью увеличени точности измерени малых уровней магнитных полей за счет обеспечени равномерного температурного прогрева боковых поверхностей и ооростков чеек поглощени пространство между чейками поглощени и стенками теплоизолированного корпуса заполнено немагнитными частиками из Неэлектропроводного материала, обладающего высокой теплопроводностью и удельной теплоемкостью, причем нагревательные элементы размещены равномерно в массе этих частиц. В качестве немагнитных частиц могут быть использованы металлические частицы , например. Мелкие медные иголки, электрически изолированные друг от друга.With an increase in the accuracy of measuring small levels of magnetic fields by ensuring uniform temperature heating of the side surfaces and the spawning cells of the absorption cells, the space between the absorption cells and the walls of the heat-insulated body is filled with non-magnetic parts made of a Non-conductive material with high thermal conductivity and specific heat capacity, and the heating elements are evenly distributed in the mass of these particles. Metallic particles can be used as non-magnetic particles, for example. Small copper needles, electrically isolated from each other.

Claims

By means of the introduction of small non-magnetic particles, it is easy to obtain the required temperature conditions, and their high heat capacity allows these thermal conditions to be preserved for a long period in the volume of the sensor tiajiie with the heaters turned out. Taking into account that in case of space-borne displacements in the Earth’s magnetic field, eddy currents in the mass of particles do not arise from a rarefaction and chaotic arrangement, it is possible to use sources of variable frequency and direct current as well as a random heating element. The creation of small particles in a scoop with the uniform placement of heating elements in them allows creating identical iBMnepaiypHue conditions for all cells of each cell of a quantum sensor sensor. In the drawing, the described device of a quantum magnetowire is described. The absorption cell 1, in combination with other measuring modules of the measuring unit, enclosed in a vinyl plastic container 2, is the main part of the magnetically sensitive element 3 of the quantum mag sensor. HHTOMBipa. The magnetically sensitive elements, 3 in / out into the body 4. of the thermal material of the anion material, the body 4 simultaneously serves as a structure for installing magnetically sensitive 3 and heating 5 elements, as well as an outlet, into which insulated non-magnetic particles 6 with high heat conductivity and proper heat capacity. The temperature is monitored by means of a temperature sensor 7. The desired temperature in the volume of the absorption cells is maintained automatically by switching on and off, heating elements 5 by means of the control circuit S of the temperature control system. When switching on the thermostatic control system, the heat generated by the heating elements 5, spreads over the volume of the particles 6, the high thermal conductivity of the particles 6, uniform temperature conditions are created around the absorption cell 1. When the optimum temperature is reached, the thermal control system is turned off and the heat 6 and the thermal properties of the fusing 4 are retained for the entire measurement period. Such a design of a quantum magnetometer sensor can find wide application for accurate measurements of the magnetic field strength with ambient temperature changes over a wide range. The invention includes a quantum magnetometer sensor containing absorption cells located inside a thermally insulated housing and a thermostatic system with a control circuit, characterized in that, in order to improve the accuracy of measuring small levels of magnetic fields, the space between the absorption cells: and the Kqinyca walls is filled with nonmagnetic particles from non-conductive material with high thermal conductivity and specific heat, the heating elements are evenly placed in this space Options are electrically bonded with the control circuitry.

2. Sensor POP.1, characterized in that, as non-magnetic particles use metal particles, for example, small copper needles, electrically isolated arug from each other. Sources of information, gfinye into account during the examination: 1, USSR Author's Certificate No. 314176, Q 01 V ZUO, 1971, 2, Nalyvayko V, I., V. A, Shgshuk S, M. Geophysical instrumentation, 1973, Bysh 53, p. 37-42.