Two-in-one ion trap device

Abstract

According to the technical scheme, the two-in-one ion trap device comprises a linear trap and a blade trap which are sequentially arranged along a center shaft, and a first trapping area of the linear trap and a second trapping area of the blade trap are distributed along the center shaft; and a shielding wall for isolating electric field interference between the linear well and the blade well is also arranged between the linear well and the blade well. According to the two-in-one ion trap device, the linear trap and the blade trap are integrated, electric field interference between the linear trap and the blade trap is avoided, and the usability of the device is ensured. According to the two-in-one ion trap device, the convenience of a demonstration experiment is improved, integration of different types of ion trap schemes is realized, and a demonstrator can better contrast the difference between different types of ion traps in principle and performance so as to better understand a charged particle constraint technology.

Description

Technical Field

[0001] This application relates to the field of charged particle confinement device technology, specifically to a two-in-one ion trap device. Background Technology

[0002] A blade trap is an ion trapping device based on electrostatic and radio frequency electric fields. It creates a pseudo-potential trap in three-dimensional space, confining charged particles to a designated region. It is widely used in quantum information processing, precision spectroscopy, time and frequency standards, and ion trap mass spectrometry. It is a variant of the Porro trap, and compared to the traditional quadrupole trap, the blade trap has advantages in electric field uniformity, fabrication difficulty, and multi-ion manipulation capabilities.

[0003] Ion traps are devices that use alternating electric or magnetic fields to confine charged particles. They are simple to set up, inexpensive, and highly sensitive. Therefore, they are widely used in fields such as precise spectroscopy, frequency standards, testing fundamental physics, quantum computing, mass harmonic analyzers, and the creation of new forms of matter in atomic, molecular, and quantum physics.

[0004] In these applications, ion traps primarily operate in a vacuum, using radio frequency electric fields. However, exploring the fundamental principles of ion traps reveals that their operating conditions are not necessarily so stringent; they can also operate at room temperature and pressure for demonstration experiments in science museums or physics teaching. Because the charged particles bound by ion traps are dynamic and in motion, they possess excellent visual appeal and educational value, leading some to use them for demonstration purposes. For instance, H. Winter and HwOrtjohann described their experiment in a 1991 article: storing charged onion particles in a simplified three-dimensional ion trap under atmospheric pressure. Kenneth G. Libbrecht and Eric D. Black, in a 2018 article, described their experiment using simplified three-dimensional ion trap devices of different designs to bind lycophyte spore particles.

[0005] Existing teaching demonstration devices for ion traps are typically structurally simple, providing only demonstration and teaching functions based on one type of ion trap. Demonstrating the differences between different types of ion traps often requires switching between different experimental devices, which is inconvenient in actual teaching and does not allow learners to quickly and intuitively compare the uses and performance differences between different types of ion traps. Utility Model Content

[0006] To improve the convenience of ion trap demonstration experiments and allow demonstrators to better compare the differences in principles and performance between different types of ion traps, thereby gaining a better understanding of charged particle confinement technology, this application provides a two-in-one ion trap device.

[0007] This application provides a dual-in-one ion trap device, including a linear trap and a blade trap arranged sequentially along a central axis, wherein the first confinement exclusion zone of the linear trap and the second confinement exclusion zone of the blade trap are both distributed along the central axis;

[0008] The linear trap and the blade trap are further separated by a shielding wall that isolates electric field interference between them.

[0009] Preferably, it further includes a light source assembly and at least one image acquisition assembly;

[0010] The light from the light source assembly shines directly along the central axis onto the first prisoner restricted area and the second prisoner restricted area;

[0011] The image acquisition component is used to capture images of the first prison restricted area and / or the second prison restricted area.

[0012] Preferably, the image acquisition component is moved along the direction of the central axis.

[0013] Preferably, the image acquisition component includes a first image acquisition component and a second image acquisition component;

[0014] The first image acquisition component and the second image acquisition component are each used to acquire images of the first prison restricted area and the second prison restricted area.

[0015] Preferably, the shielding wall is a metal layer extending radially along the central axis.

[0016] Preferably, the linear trap includes four parallel ion trap electrodes, which are parallel to the central axis.

[0017] The blade trap consists of two sets of blades that are symmetrical about a central axis. One set of symmetrical blades has two complete blades on which an AC voltage is applied; the other set of symmetrical blades is divided into 5 groups of independent small blades on which a DC voltage is applied.

[0018] Preferably, the housing includes a closed linear trap and a blade trap, and at least a portion of the housing is transparent.

[0019] Preferably, the upper surface of the housing is provided with a closable opening, and the housing is used to close the opening.

[0020] Preferably, it also includes a housing, with a housing cover that is connected to the housing cover; when the housing cover is closed, the housing and the housing cover house the linear trap, the blade trap, the shielding wall, the light source assembly, and the image acquisition assembly.

[0021] This application presents a two-in-one ion trap device that integrates a linear trap and a blade trap, avoiding electric field interference between the two during integration and ensuring the device's usability. This two-in-one ion trap device improves the convenience of demonstration experiments, enabling the integration of different types of ion trap schemes. It allows demonstrators to better compare the principles and performance differences between different types of ion traps, thereby gaining a better understanding of charged particle confinement technology. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the dual-in-one ion trap device of this application;

[0023] Figure 2 This is a side view of the dual-in-one ion trap device of this application.

[0024] Figure 3 This is a schematic diagram of the overall structure of the two-in-one ion trap device of this application.

[0025] Figure 4 as well as Figure 5 This is a schematic diagram of one embodiment of the two-in-one ion trap device of this application.

[0026] Figure 6 This is a schematic diagram of the circuit module of the two-in-one ion trap device of this application.

[0027] In the picture:

[0028] 1: Two-in-one ion trap; 11: Linear trap; 111: First restricted area; 12: Blade trap; 121: Second restricted area; 13: Shielding wall; 14: Transparent shell; 141: Opening; 15: Shell cover; 16: Second image acquisition component; 17: Guide rail; 18: Box body; 19: Box cover; O: Central axis. Detailed Implementation

[0029] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. In this specification, the dimensions of the drawings do not represent the actual size ratio. The drawings are only used to illustrate the relative positional relationship and connection relationship between the components. Components with the same name or the same reference numeral represent similar or the same structure, and are limited to illustrative purposes.

[0030] Figure 1 This is a schematic diagram of the structure of the two-in-one ion trap 1 of this application. Figure 2This is a side view of the dual-purpose ion trap 1. The dual-purpose ion trap 1 includes a linear trap 11 and a blade trap 12 arranged sequentially along the central axis O. The first confinement zone 111 of the linear trap 11 and the second confinement zone 121 of the blade trap 12 are both distributed along the central axis O. A shielding wall 13 is provided between the linear trap 11 and the blade trap 12 to isolate electric field interference between them. The shielding wall 13 typically has a metal layer extending within a certain radial range along the central axis O; the specific range depends on the radial dimensions of the linear trap 11 and the blade trap 12. The metal layer may be one or more thin metal layers, or a specific metal support. This arrangement is not only convenient for layout but also serves two purposes: firstly, it effectively solves the problem of field interference between traps; secondly, due to the larger axial dimension, the axial confinement of charged particles is easier to control, resulting in better anti-interference capabilities, thus facilitating the demonstration of stable charged particle confinement. Furthermore, the two sets of ion traps distributed along the axial direction facilitate the simultaneous observation of charged particle confinement phenomena.

[0031] The linear trap 11 includes four horizontally placed parallel ion trap electrodes, and the blade trap 12 includes two sets of mutually symmetrical blades. One set of symmetrical large blades has two complete blades on which an AC voltage is applied; the other set of symmetrical blades is divided into 10 independent small blades on which a DC voltage is applied. The four ion trap electrodes and the two sets of symmetrical blades are evenly arranged around the same horizontal central axis, with the central axis serving as the center of the two-in-one ion trap.

[0032] Figure 3 This is a schematic diagram of the overall structure of the dual-in-one ion trap 1 of this application. To achieve efficient and clear observation of the linear trap 11 and the blade trap 12, the dual-in-one ion trap 1 also includes a light source assembly 14 and at least one image acquisition component, such as the first image acquisition component 15 shown in the figure. The light source of the light source assembly 14 shines directly along the central axis O onto the first restricted area 111 and the second restricted area 121. The light source assembly can be a combination of a specific light source and lenses. The specific light source can be a visible light source, preferably a laser source of a specific frequency to eliminate interference from ambient light. The light emitted by the light source is preferably parallel light; therefore, multiple lenses may be present in the light source to adjust the originally emitted laser light into parallel light. Based on this, the light source can be positioned directly opposite the dual-in-one ion trap 1 along the central axis O, or it can be positioned off-center from the central axis O. Therefore, one or more sets of reflectors can be provided in the light source assembly 14 to correct the parallel light emitted by the light source to be incident along the central axis O.

[0033] At least one image acquisition component, taking the first image acquisition component 15 as an example, is used to capture images of the first restricted area 111 and / or the second restricted area 121. Its photosensitive characteristics are typically matched to the light source component 14, meaning it is primarily sensitive to the light waves provided by the light source component 14. During application, when charged particles are shaken into the first restricted area 111 or the second restricted area 121 and the linear trap 11 or blade trap 12 is activated, the charged particles can suspend within the first restricted area 111 and the second restricted area 121. At this time, the light source component 14 is activated, causing its emitted light to be incident along the central axis O. When the incident light encounters the charged particles confined within the first restricted area 111 or the second restricted area 121, the Tyndall effect occurs, and the scattered light is reflected into the surrounding space, with a portion entering the first image acquisition component 15 and being imaged. Therefore, under the action of the light source component 14, the position or motion state of the charged particles can be determined through the image obtained by the first image acquisition component 15, thereby achieving a demonstration effect. Of course, this setup is not mandatory. The dual-in-one ion trap 1 is mainly used for demonstration purposes, and qualitative understanding of the experiment can also be obtained directly through visual observation. To simultaneously cover the first restricted area 111 and the second restricted area 121, the first image acquisition component 15 can be configured to move along the extension direction of the central axis O. The movement of the first image acquisition component 15 achieves the purpose of acquiring images of the first restricted area 111 and the second restricted area 121 respectively. Based on this, the first image acquisition component 15 can be mounted on the guide rail 17. Preferably, the image acquisition components can be configured in two sets, i.e., there is also a second image acquisition component 16. In this case, the first image acquisition component 15 and the second image acquisition component 16 are used to acquire images of the first restricted area 111 and the second restricted area 121 respectively. At this time, the first image acquisition component 15 and the second image acquisition component 16 can be fixedly set, but considering the need for debugging, the first image acquisition component 15 and the second image acquisition component 16 can still be moved and set on the guide rail 17.

[0034] Figure 4 as well as Figure 5This is a schematic diagram of one embodiment of a dual-in-one ion trap 1. The dual-in-one ion trap 1 includes a shell 142 that essentially encloses a linear trap 11 and a blade trap 12. At least a portion of the shell 142 is transparent, typically made of glass or acrylic material. This avoids the use of particulate matter from the environment, provides good lighting and observation conditions, and prevents the operator from accidentally touching the internal components of the linear trap 11 and the blade trap 12. Preferably, a closable opening 141 is provided on the upper surface of the transparent shell 142. The opening 141 can be used for observation, and more importantly, for supplying charged particles. During experiments, charged particles, such as charged cornstarch particles, can be shaken into the first restricted area 111 or the second restricted area 121 through the opening 141 with the opening open. After the particles are supplied, the opening 141 can be closed using a shell cover 151.

[0035] The dual-purpose ion trap 1 also includes a housing 18 with an openable cover 19. The front panel of housing 18 mainly features signal input ports, signal measurement ports, communication ports, a laser switch, a laser indicator light, and a ±10V switch. The cover 19 can be freely rotated from 0 to 180°, and has a dark acrylic panel in the center. The sides of housing 18 have perforated designs below the handles to enhance heat dissipation. The observation chamber is made of white polytetrafluoroethylene insulating material. The front of the observation chamber has a window with a transparent acrylic panel for observation, facilitating observation while preventing the observer from touching the interior of the chamber and thus avoiding electric shock. A light-transmitting hole is located on the right side of the observation chamber for light to pass through. A laser is positioned on the right side of the observation box, corresponding to one end of the axial direction of the linear ion trap and blade trap, with the laser's emitting end facing the observation box. A light-transmitting port is located on the side corresponding to one end of the axial direction of the linear ion trap and blade trap. An image acquisition device is positioned on the reflected light path of the observation box. Incident light is emitted from the laser into the observation box, and the reflected light is received by the image acquisition device. In the optical observation section, the image acquisition device is mounted on a sliding structure, with the slide rail positioned at the front of the observation box. The length of the slide rail can cover the entire observation box.

[0036] Figure 6This is a schematic diagram of the circuit module of the two-in-one ion trap 1. The two-in-one ion trap cavity requires multiple branch inputs. The lower electrical box integrates all the wiring, directly connecting to the upper hardware, reducing external interference and increasing portability. The signal generation section mainly includes AC signal generation and DC signal generation sections. The DC signal generation section mainly includes a host computer, signal source, voltage control, high-voltage amplifier, and voltage divider circuit. The signal source is a 24V-10A DC voltage or voltage source. The signal source simultaneously supplies power to the voltage control board and the high-voltage amplifier board. The host computer is connected to the voltage control board, and commands are issued from the host computer to adjust the output voltage of the voltage control board. The input terminal of the high-voltage amplifier board is connected to the output terminal of the voltage control board, amplifying the signal output by the voltage control board. The output terminal of the high-voltage amplifier board is connected to the input terminal of the voltage divider circuit board, and the output of the voltage divider circuit board is connected to the blade trap electrode. The signal source output is connected to the input of a modular circuit with switchable ±10V output. The output of the modular circuit with switchable ±10V output is connected to the copper plates on both sides of the ion trap copper rod to provide the confinement voltage.

[0037] The AC signal generation section includes a signal source, power amplifier, transformer, voltage divider resistors, high-voltage protection resistor, measuring resistor, and oscilloscope. The signal source can be a frequency and voltage adjustable signal generator, a DDS (Digital Digital Synthesizer), or an oscillator circuit module. The signal source outputs a sinusoidal voltage signal with adjustable frequency and voltage. When the signal source is a signal generator, a Keysight signal generator or a programmable module can be selected. The peak-to-peak voltage output of the signal source is Vpp0-±10V, and the frequency is 10-300Hz. The output of the signal source is connected to the input of the power amplifier, which amplifies the signal output to increase the output power. The power amplifier can adjust and control the output power. The output of the power amplifier is connected to the primary coil of the transformer, which is selected with a voltage amplification ratio of 1:100-1:500.

[0038] The secondary coil of the transformer is connected to the two ends of the blade trap electrode in the ion trap. A high-voltage protection resistor, a measuring resistor, and a voltage divider resistor are connected between one end of the ion trap electrode and the corresponding end of the blade trap electrode and the secondary coil of the transformer. These resistors protect the downstream equipment. High-voltage protection resistors from brands such as Panasonic can be used, preferably with a resistance of 1MΩ-100MΩ and the ability to withstand voltages above 5kV.

[0039] Because a signal generator / DDS / oscillator circuit, a power amplifier, and a transformer are added at the front end as the signal source, and the transformer output is connected to the ion trap electrode and the blade trap electrode through a high-voltage protection resistor, a measuring resistor, and a voltage divider resistor, all using high-voltage components, the power output can be limited. The AC voltage amplitude and frequency can be adjusted using the signal generator. The oscilloscope input is connected to both ends of the measuring resistor, allowing the oscilloscope to monitor the voltage waveform output from the transformer in real time and display it on the oscilloscope.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application shall fall within the protection scope defined by the claims of this application.

Claims

1. A two-in-one ion trap device, characterized in that, It includes a linear trap (11) and a blade trap (12) arranged sequentially along the central axis (O). The first prison area (111) of the linear trap (11) and the second prison area (121) of the blade trap (12) are both distributed along the central axis (O). The linear trap (11) and the blade trap (12) are further separated by a shielding wall (13) to isolate electric field interference between them.

2. The dual-function ion trap device as described in claim 1, characterized in that, It also includes a light source assembly (14) and at least one image acquisition assembly; The light from the light source assembly (14) shines directly along the central axis (O) onto the first prison restricted area (111) and the second prison restricted area (121); The image acquisition component is used to capture images of the first prison restricted area (111) and / or the second prison restricted area (121).

3. The dual-function ion trap device as described in claim 2, characterized in that, The image acquisition component is moved along the central axis (O).

4. The dual-function ion trap device as described in claim 3, characterized in that, The image acquisition component includes a first image acquisition component (15) and a second image acquisition component (16); The first image acquisition component (15) and the second image acquisition component (16) are each used to acquire images of the first prison restricted area (111) and the second prison restricted area (121).

5. The dual-function ion trap device according to any one of claims 1-4, characterized in that, The shielding wall (13) is a metal layer that extends radially along the central axis (O).

6. The dual-function ion trap device according to any one of claims 1-4, characterized in that, The linear trap (11) includes four parallel ion trap electrodes, which are parallel to the central axis (O). The blade trap (12) includes two sets of blades that are symmetrical about the central axis (O). One set of symmetrical blades has two complete blades on which an AC voltage is applied; the other set of symmetrical blades is divided into 5 independent small blades on which a DC voltage is applied.

7. The dual-function ion trap device according to any one of claims 1-4, characterized in that, The housing (142) includes a closed linear trap (11) and a blade trap (12), and the housing (142) is at least partially transparent.

8. The dual-function ion trap device as described in claim 7, characterized in that, The upper surface of the housing (142) is provided with a closable opening (141), and the housing (142) is used to close the opening (141).

9. The dual-function ion trap device as described in claim 4, characterized in that, It also includes a housing (18), which is connected to a cover (19); when the cover (19) is closed, the housing (18) and the cover (19) house the linear trap (11), the blade trap (12), the shielding wall (13), the light source assembly (14), and the image acquisition assembly.

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