Collective Projection Study On Sustaining And Adjusting Mechanism Of New-style Transmission Grating Spectrograph

As the essential researchful projection of laser installation, the primary function of new-style transmission grating spectrograph was measuring X-ray spectrum of laser installation. Collocate slit, grating, attenuation slice and X-rays'charge coupled device camera reasonablly according as optical layout, the functions were avoiding the rays, sustaining and adjusting. On the premise of no-breakaging the laser installation target chamber vacuum condition, throngh the abaxial beforehand collimation, it collimate and metrrage accurately x-ray spectrum.Currently, actual resources about transmission grating spectrograph were very exiguous in our country. In allusion to the new function and technical requirements of new-style transmission grating spectrograph, optical elements'manual and dynamoelectric revolving adjustment, three-degree of fredom accurate adjustment of grating, error measuring and compensation, developping pivotal technology investigation of new-style transmission grating spectrograph was very important for it's research and manufacture.In respect of collective projection design, this article comprehensively analysis the adjustive circumstance and object of new-style transmission grating spectrograph, installation and debug flow of each optical element. A model made up of step motor, electromagnetic power lost brakes and photoelectric proximity switch were advanced to solve the problems of prepositive slit's revolving and avoidding round the optical axis. The resolvent measure made up of step motor, absolute type encoder, ballscrew, decussate linear guideway were advanced to solve the problem of grating's translation along the directions of X and Y, revolving round the optical axis, attenuation slice's translation along the directions of Y.In allusion to aptotic axes rotary components'precision request of new-style transmission grating spectrograph to establish aptotic axes rotary theoretical model. The analytic outcome indicated that the actualization quomodo made up of high-accuracy regulative screw pairs and constringent spring could commendably satisfy their precision request. In allusion to the request of fore and after shield cannulation subassemblies'ventilating and avoidding light, the quomodo of labyrinthic optical was introduced. The practice testified that this quomodo could satisfy the target practice testing request. In allusion to holistic airproof and vacuum restraining request of new-style transmission grating spectrograph, the quomodo made up of junk ring, copper band airproof and electric connector between atmosphere and vacuum was used to actualize it.In respect of error control, the article analysed systemic error origin and put forward various error compensation schemes in allusion to various optical components'error origin. It established the error compensation equation, a first-rank numerical value was elicitted times without number, preferably solved each optical components'precision problem.As the key part of new-style transmission grating spectrograph for example, by applying the Pre/E software established the three-dimensional model of grating and attenuation slice adjustive motherboard and a static and dynamic analysis were carried out by applying the ANASYS Workbench software to get the total deformation plot, equivalent stress plot and the preceding four mode shape plot. The results indicated that the key parts'rigidity and strength all statisfied design demands, and the preceding 4 ordered inherent frequency were all greater than 20Hz, so they would not produce resonance.