CN203027589U

CN203027589U - Continuous wave radio frequency quadrupole accelerator water cooling system

Info

Publication number: CN203027589U
Application number: CN 201220707792
Authority: CN
Inventors: 张力平; 孙安; 薛培培; 刘克
Original assignee: JIANGSU ANDERSON SUPERCONDUCTING ACCELERATOR TECHNOLOGY Inc; JIANGSU DEZUO ELECTRONIC TECHNOLOGY Co Ltd; Nanjing University; Changan University
Current assignee: JIANGSU ANDERSON SUPERCONDUCTING ACCELERATOR TECHNOLOGY Inc; JIANGSU DEZUO ELECTRONIC TECHNOLOGY Co Ltd; Nanjing University; Changan University
Priority date: 2012-12-19
Filing date: 2012-12-19
Publication date: 2013-06-26
Anticipated expiration: 2022-12-19

Abstract

The utility model discloses a continuous wave radio frequency quadrupole accelerator water cooling system. A water cooling pipeline is arranged in a wing, the wing is of a split structure, the water cooling pipeline is S-shaped and is arranged on the abutting surface of split wing sheets of the wing, and a solder groove is formed around the water cooling pipeline. The continuous wave radio frequency quadrupole accelerator water cooling system has the advantages that the voltage of the S-shaped water cooling pipeline is increased, the water cooling effect is more thorough and the efficiency is higher in comparison with a through linear water cooling pipeline, the problem of heat radiation of a radio frequency quadrupole accelerator when running in a continuous wave is solved, the heat radiating property is greatly improved, the frequency of the radio frequency quadrupole accelerator can be more accurately controlled, the beam stability is ensured, and thus the accelerating property can be effectively stabilized and improved.

Description

Continuous wave radio frequency level Four accelerator water-cooling system

Technical field

The utility model relates to a kind of water-cooling system, particularly a kind of continuous wave radio frequency level Four accelerator water-cooling system.

Background technology

Radio frequency four polar field (Radio Frequency Quadrupole, RFQ) accelerator is a kind ofly can be simultaneously to focus on the radial component of its rf electric field the efficient linear accelerating structure of the various low speed charged particles such as accelerating, be applicable to from the proton to the uranium ion with longitudinal component.It integrates the several functions such as coupling, shaping, pack and acceleration, can directly accept the continuous line of low speed high current of drawing from ion source, and particle be accelerated to the energy of the several MeV of every nucleon with high capture efficiency and lower Emittance Growth.In addition, due to advantages such as volume are small and exquisite and easy to use, no matter rfq accelerator is as the injection device of large-scale accelerator or all have research and practical value as the independent equipment that uses.

In recent years, the broad interest that presents for spallation neutron source, the clean nuclear power source of Accelerator driven and other high power proton beam both at home and abroad, and an urgent demand to high current, high power proton precessional magnetometer that causes thus, more all Secretaries have been proposed the radio frequency level Four accelerator as their prime accelerating structures, particularly to radio frequency level Four accelerator can be at high duty ratio, even accelerate the high current proton beam under the continuous wave operating state, stability and the reliability of its operation proposed unprecedented strict requirement.

The large calorimetric meeting that radio frequency level Four accelerator produces in running causes the frequency drift of accelerator, therefore cooling structure is the prerequisite that guarantees its stable operation, present normal temperature radio frequency level Four accelerator all adopts the mode of water-cooled, water-cooled has two aspect effects, at first it can be taken away the radiofrequency field heating, keeps the thermal stability of radio frequency level Four Accelerator Cavity and has limited cavity deformation amplitude; Secondly, when the off resonance of radio frequency level Four accelerator, it can also be used to carry out tuning and does not affect radio-frequency field distribution.Accompanying drawing 1 is its fin cutaway view of pulse radiation frequency level Four accelerator, shown water-cooling system, the water-cooling system of normal temperature radio frequency level Four accelerator generally is comprised of one on fin or several penetrating straight line water-cooled pipeline, this structure can cause following two problems: 1, the fin heat radiation is inhomogeneous, and the place of close water-cooled pipeline obtains cooling at first; 2, under the continuous wave state, the temperature of fin and whole radio frequency level Four accelerator can not effectively accurately be controlled, and the application difficult that result faces is that its cooling problem and the frequency that causes due to variations in temperature are elegant.

In order to solve this two problems, research institution both domestic and external concentrates on energy and opens several penetrating straight line water-cooled pipelines more and be optimized on open position.1980, Los Alamos National Laboratory was on the copper chamber of its radio frequency level Four accelerator system, and each electrode has been opened a water-cooled pipeline.Subsequently, the ADS system works of their suggestion is under the continuous wave state, feasibility for checking system, they have made a low energy demonstration accelerator, in low energy demonstration accelerator system, for the electrode that makes radio frequency level Four Accelerator Cavity obtains good coolingly, on four wing electrodes in every joint chamber, 6 water-cooled pipelines are arranged, the tuning of chamber realized by the water temperature of controlling cooling water.The radio frequency level Four accelerator of Korea S atomic energy research institute PEFP research project group development works under pulse mode, and a water-cooled pipeline has been opened in inside.Institute of High Energy Physcis, Academia Sinica by the ANSYS programming be used for the basic parameters such as position, size, flow of the water-cooled pipeline of CSNS radio frequency level Four accelerator, determined at last to guarantee that with 5 water-cooled pipelines the thermal deformation of high power operation lower chamber is effectively controlled, this radio frequency level Four accelerator works in pulse mode; Operate in the radio frequency level Four accelerator under the continuous wave state, the heat of generation obviously increases, and Chinese clean nuclear power source works in continuous wave mode with radio frequency level Four accelerator, still adopts 5 water-cooled pipelines to guarantee the thermal stability of electrode fin.

The heat that produces in continuous wave radio frequency level Four accelerator operation process is far above pulse radiation frequency level Four accelerator, and the quality of thermal diffusivity can directly affect the job stability of radio frequency level Four accelerator.Guarantee thermal diffusivity if depend merely on the number that increases the water-cooled pipeline, may not satisfy cooling requirement, and system's seepy question that may bring processing difficulties and thereupon might produce, and make peripheral matched equipment complicated.

The utility model content

The utility model purpose: for the problems referred to above, the purpose of this utility model is to provide a kind of water-cooling system that solves continuous wave radio frequency level Four accelerator heat dissipation problem.

Technical scheme: a kind of continuous wave radio frequency level Four accelerator water-cooling system, be provided with the water-cooled pipeline in fin, described fin is a minute chip architecture, and described water-cooled pipeline is on the interface of the snakelike burst that is opened in described fin of tray salver, offers solder bath around described water-cooled pipeline.

The segmentation of the described fin length direction of described water cooling tube curb is offered, and the import of every section and outlet are drawn respectively.

Position, shape that described water-cooled pipeline is offered on the interface of described burst are corresponding.

Beneficial effect: compared with prior art, the utility model has the advantages that snakelike water-cooled pipeline increases than penetrating straight line water-cooled manifold volume, water-cooled is thorough, efficient is high, solved the heat dissipation problem of radio frequency level Four accelerator under continuous wave operation, thermal diffusivity is increased dramatically, can control more accurately the frequency of radio frequency level Four accelerator, guarantee line stability, thereby acceleration performance is is effectively stabilized and increased.

Description of drawings

Fig. 1 is its fin cutaway view of pulse radiation frequency level Four accelerator;

Fig. 2 is the burst perspective view of the utility model fin;

Fig. 3 cuts into the cutting position schematic diagram of two to the integral tab line in the utility model;

Fig. 4 is the utility model fin external structure schematic diagram;

Fig. 5 is that the master of the utility model fin looks perspective view.

Embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only is used for explanation the utility model and is not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.

As shown in accompanying

drawing

2,4,5, a kind of continuous wave radio frequency level Four accelerator water-cooling system is provided with water-cooled pipeline 1 in the fin as electrode, and this fin is a minute chip architecture, and water-cooled pipeline 1 is opened on the interface 3 of burst 2 of fin.Water-cooled pipeline 1 is on interface 3 that tray salver is snakelike to be offered, and set up multistage separately along the fin length direction, import 5 and the outlet 6 of every section are drawn respectively, this direction that sets up flow of cooling water in hop count and every section coiled pipe separately is determined by relevant Optimization Design in concrete the application, shown in accompanying drawing is 3 sections.Water-cooled pipeline 1 can be offered on a slice burst, also can all offer on two bursts, when all offering on two bursts, notices that position, the shape offered are corresponding, guarantees that two bursts form consistent water-cooled pipeline when involutory.Offer solder bath 4 around water-cooled pipeline 1.

The relativity of straight tube that following table is classified as and the cooling flow of coiled pipe:

π	Caliber r	Single tube length L/mm	The pipe number	Conduit volume/mm ³
					3.14	5	1000	3	235500
3.14	5	1020（5）	3	240210
					3.14	5	1547（7）	3	364318.5

In table, " (5) ", " (7) " refer to the number of passes that vertically turns back of single tube coiled pipe;

This shows, snakelike water-cooled pipeline of the present utility model has increased than original straight tube water-cooled manifold volume: 364318.5/235500=1.547 doubly.

The manufacture method of above-mentioned continuous wave radio frequency level Four accelerator water-cooling system is determined the version of required radio frequency level Four accelerator according to user's needs, the water-cooled pipeline of each fin is carried out optimized design.Manufacturing comprises following concrete steps:

(1) as described in accompanying drawing 3, the integral tab line is cut into two bursts, cut surface is offset from the split of integral tab;

(2) use high-precision numerical control machine, offer multistage and be the snakelike water-cooled pipeline of tray salver on cut surface;

(3) use high-precision numerical control machine, offer solder bath around the water-cooled pipeline on cut surface, put into brazing solder in welding groove;

(4) fin of two bursts is involutory from cut surface, involutory seam is bonded into electron beam welding, and purpose is to guarantee the consistency of radio frequency four utmost point accelerator materials and the permanent sealing of fin;

(5) with Digit Control Machine Tool, synthetic fin is processed according to the PARMTEQM Output rusults;

(6) carry out frequency test, with electron beam welding or four radio frequency level Four accelerator fins of Welding.

After radio frequency four utmost point accelerator integral solder are completed, carry out follow-up assembling, vacuum and leakage inspection; The installation power coupler carries out low-power measurement and fine setting to accelerating cavity; Complete the assembling of whole radio frequency level Four accelerator, debug, move.

Radio frequency level Four accelerator system is operated under vacuum state.Power source by power coupler be fed into radio frequency four utmost point accelerators and within it section set up field intensity, the longitudinal component of field intensity passes to the particle beams to energy, the particle beams is accelerated.The prerequisite that the particle beams accelerates is that radio frequency four utmost point Accelerator Cavity body frequencies are and the frequency multiplication of input particle beams frequency, and this relies on tuner to regulate.Prolongation along with the operating time, if radio frequency level Four accelerator cavity accumulated inside heat, the rising of temperature can cause cavity volume to change, thereby cause the drift of its resonance frequency, make particle rapidity not reach predetermined acceleration figure, so water-cooling system is very crucial for the stability and the premium properties that guarantee whole system.In addition, also need to detect and control whole accelerating system and cooling device thereof with a complete computer control system of cover.

Claims

1. continuous wave radio frequency level Four accelerator water-cooling system, be provided with water-cooled pipeline (1) in fin, it is characterized in that: described fin is minute chip architecture, described water-cooled pipeline (1) is on the interface (3) of the snakelike burst (2) that is opened in described fin of tray salver, and described water-cooled pipeline (1) is offered solder bath (4) on every side.

2. continuous wave radio frequency level Four accelerator water-cooling system according to claim 1, it is characterized in that: described water-cooled pipeline (1) is offered along the segmentation of described fin length direction, and the import of every section (5) and outlet (6) are drawn respectively.

3. continuous wave radio frequency level Four accelerator water-cooling system according to claim 1, it is characterized in that: position, shape that described water-cooled pipeline (1) is offered on the interface (3) of described burst (2) are corresponding.