CN104317214A - Ultraviolet photon counting detector with position readout circuit - Google Patents

Ultraviolet photon counting detector with position readout circuit Download PDF

Info

Publication number
CN104317214A
CN104317214A CN201410508243.6A CN201410508243A CN104317214A CN 104317214 A CN104317214 A CN 104317214A CN 201410508243 A CN201410508243 A CN 201410508243A CN 104317214 A CN104317214 A CN 104317214A
Authority
CN
China
Prior art keywords
module
digital
signal
ultraviolet
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410508243.6A
Other languages
Chinese (zh)
Inventor
尼启良
张凯
赵爱荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun Institute of Optics Fine Mechanics and Physics of CAS
Original Assignee
Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changchun Institute of Optics Fine Mechanics and Physics of CAS filed Critical Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority to CN201410508243.6A priority Critical patent/CN104317214A/en
Publication of CN104317214A publication Critical patent/CN104317214A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428—Safety, monitoring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/24—Measuring radiation intensity with semiconductor detectors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2612—Data acquisition interface
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2656—Instrumentation

Abstract

The invention relates to an ultraviolet photon counting detector with a position readout circuit. The ultraviolet photon counting detector includes a multi-path pulse acquisition and position readout circuit system; and the multi-path pulse acquisition and position readout circuit system includes a charge sensitivity amplification module, a filtering and shaping module and a peak value holding module of an analog circuit part as well as an analog-to-digital version module, a USB data read-write module and a software imaging system of a digital circuit part. The ultraviolet photon counting detector with the position readout circuit of the invention has the advantages of simple structure, small size, portable convenience, convenient operation and high spatial resolution, and can meet the application requirements of deep space exploration and ultraviolet optical spectrum instruments.

Description

A kind of ultraviolet photon digital detector with position sensing circuit
Technical field
The invention belongs to ultraviolet detection technical field, relate to a kind of ultraviolet photon digital detector with position sensing circuit of ultraviolet photon digital detector.
Background technology
At present, the ultraviolet band two-dimensional position ultrasensitive photon of microchannel plate (MCP) counting imaging detector is used to be widely used in the fields such as space astronomy, survey of deep space, photoelectronic warfare.Photon counting imaging detector is operated in 10nm ~ 280nm wavelength band, is used for the faint radiation signal detection imaging of earth plasmasphere.Common position-sensitive anode has spline shape (WSA) anode, delay line anode (XDL) and Vernier anode.Ultraviolet photon digital detector resolution wherein based on Vernier anode can reach several micron, and counting rate, up to kcps up to a hundred, has important application prospect in ultraviolet detection field.
About the method to ultraviolet detector front end analogue signals collecting and imaging, be generally the data collecting card using Based PC PCI interface at present, be equipped with relevant data processing and imaging control software design.Traditional pci bus interface data collecting card once can transmit the data of 32 or 64, reach as high as the message transmission rate of 1GB/s, and due to advantages such as its versatility and performance high stability and the convenience that uses, be used for carrying out the performance testing and detect detector widely early stage in ultraviolet detector development.But its cost compare is high and bulky.When spacecraft equipment develops the stage of relative maturity, how equipment being done that little, cost reduces is an important Consideration.
Summary of the invention
The present invention will solve technical matters of the prior art, provide a kind of and collect process to charge signal and determine to input the physical location of photon, reduces the volume of detector and reduces cost, with the ultraviolet photon digital detector of position sensing circuit.
In order to solve the problems of the technologies described above, technical scheme of the present invention is specific as follows:
With a ultraviolet photon digital detector for position sensing circuit, comprising:
Multiplex pulse gathers and position sensing circuit system, comprising: the Charge sensitive amplifier module of artificial circuit part, filter shape module, peak value hold module, and the analog-to-digital conversion module of digital circuits section, usb data module for reading and writing, software image system;
Charge sensitive amplifier module comprises multiple charge amplifiers, is respectively used to the induced charge receiving the output of each electrode of ultraviolet detector anode, is converted into voltage signal; Obtain the signal of a high impedance, low noise, deal with for follow-up circuit and collect;
The voltage signal that filter shape module is used for coming front end charge conversion carries out waveform adjustment and improves Signal-to-Noise, forms the pulse of an approximate Gaussian waveform;
Peak value hold module is used for the peak value broadening of the pulse signal of accurate Gaussian waveform, improves the sampling accuracy of follow-up A/D sample circuit;
The pulse signal that analog-to-digital conversion module is used for ultraviolet detector mimic channel exports accurately is sampled, and sampling terminates the rear simulating signal quantification treatment to adopting, and is converted to the digital signal of 12 precision;
Usb data module for reading and writing is the mode transmitting data with USB, the pulse signal amount of adopting constantly is sent to computing machine in real time, stores with 16 binary form in hard disc of computer;
Software decode image-forming module is used for making analog quantity restore calculation to the digital signal that computing machine receives, and according to the decoding formula of detector anode, the analog value of each pulse is converted to the two-dimensional position coordinate of photon, on software, finally demonstrates the location drawing picture of each photon.
In technique scheme, described Charge sensitive amplifier module comprises 9 charge amplifiers.
In technique scheme, be also provided with data rate matching module, for mating data rate.
The present invention has following beneficial effect:
Ultraviolet photon digital detector with position sensing circuit of the present invention, can realize the charge pulse signal that ultraviolet photon digital detector anode rear end exports is carried out to high speed accurate acquisition, 12 modulus accurate transformation, data fast transports, is calculated to be the functions such as picture.
To be that circuit structure is simplified, volume is little be easy to carry advantage of the present invention, and simple operation, the spatial resolution of detector is high, meets the application requirement of survey of deep space and ultraviolet spectrum instrument.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the functional module schematic diagram of photon counting detector position sensing circuit.
Fig. 2 is the workflow diagram of imaging software.
Embodiment
Invention thought of the present invention is:
Ultraviolet photon digital detector with position sensing circuit of the present invention comprises:
Multiplex pulse gathers and position sensing circuit system, comprise the Charge sensitive amplifier module of artificial circuit part, filter shape module, peak value hold module, with analog to digital conversion (A/D) module, data rate matching module, the usb data module for reading and writing of digital circuits section, software decode computing module, software image module.
Charge amplifier one has 9, is respectively used to the induced charge receiving the output of each electrode of ultraviolet detector anode, is converted into voltage signal.Obtain the signal of a high impedance, low noise, deal with for follow-up circuit and collect.
The voltage signal that filter shape module is used for coming front end charge conversion carries out waveform adjustment and improves Signal-to-Noise, forms the pulse of an approximate Gaussian waveform.
Peak value hold module is used for the peak value broadening of the pulse signal of accurate Gaussian waveform, improves the sampling accuracy of follow-up A/D sample circuit.
The pulse signal that analog-to-digital conversion module is used for ultraviolet detector mimic channel exports accurately is sampled, and sampling terminates the rear simulating signal quantification treatment to adopting, and is converted to the digital signal of 12 precision.
Usb data module for reading and writing is the mode transmitting data with USB, the pulse signal amount of adopting constantly is sent to computing machine in real time, stores with 16 binary form in hard disc of computer.This transmission mode has the advantages that speed is fast, data volume is large, easy to use, meets detector carrying and using in each occasion.
Software decode image-forming module, digital signal for receiving computing machine makes analog quantity restore calculation, and according to the decoding formula of detector anode, the analog value of each pulse is converted to the two-dimensional position coordinate of photon, on software, finally demonstrates the location drawing picture of each photon.
The embodiment provided below in conjunction with accompanying drawing 1 is described in further detail the present invention.
With reference to Fig. 1, a kind of ultraviolet photon digital detector position sensing circuit comprises analog signal processing circuit, digital acquisition circuit system and PC control software three parts.
Mimic channel described in present embodiment comprises Charge sensitive amplifier, filter shape and peak value and keeps several module.Its principle of work is: when ultraviolet photon incides after in detector, and each electrode of detector anode collects a certain amount of electric charge.The charge signal received is become voltage signal by the electric charge pre-amplifying module of mimic channel.Send into a shaping amplification module fast after the signal summation that prime amplifier exports, the shaping amplifier part that the present invention uses effect on market best, obtains the pulse signal that a width is 500ns approximate Gaussian waveform.For the retention time at stretched pulse top, subsequent acquisition circuit is accurately sampled, adds peak value hold module again, use special peak value hold module processor, obtain the pulse that top width is about 2 μ s.By nine tunnel results added, produce through window comparator the TTL pulse that a pulse width was tens nanoseconds, the digital circuits section for triggering following is accurately sampled.
Digital circuit blocks described in present embodiment comprises modulus (A/D) conversion and control module, data cache module and USB Read-write Catrol module, its principle of work is: the 9 road analog pulse signals that mimic channel exports deliver to the analog input end of 9 A/D converter parts respectively, A/D device used is the ADS-1202ME of DETEL company of the U.S., has the sampling rate of 2MHz and the conversion accuracy of 12bit.FPGA control A/D device under the triggering of TTL synchronizing signal receives and converting analogue data, and by the digital signal that obtains stored in asynchronous FIFO.Asynchronous FIFO effect is the coupling sample rate of A/D and the data rate of rear end USB.
Described USB delivery unit adopts the CY7C68013A chip of Cypress company, the clock frequency of the highest 48MHz.USB chip carries out data transmission with SLAVE fifo mode under FPGA controls, and the inner data often writing full 1KB are automatically packed and are sent in computing machine.
USB used transmits chip and can only be set to once transmit 8 bit data or 16 bit data, and 12 bit digital quantity obtained are expanded to 16 bit digital quantity by serioparallel exchange mode and transfer to computing machine by FPGA.
Described software decode image-forming module has been used for the digital signal analog quantity reduction of adopting, has gone out the work such as physical location, drawing imaging of incident ultraviolet photon according to anode decoding formulae discovery, and idiographic flow as shown in Figure 2.The photon position decoding formula of Vernier anode is as follows:
Suppose that obtaining the nine road quantities of electric charge is respectively θ 1, θ 2, θ 3... θ 9, according to vernier anode construction feature, following derivation can be done:
θ A = arctan ( 2 θ 1 - θ 2 - θ 3 3 ( θ 2 - θ 3 ) ) ,
θ B = arctan ( 2 θ 4 - θ 5 - θ 6 3 ( θ 5 - θ 6 ) ) ,
θ C = arctan ( 2 θ 7 - θ 8 - θ 9 3 ( θ 8 - θ 9 ) ) ,
Introduce parameter θ x, θ y, m x, m y, it is defined as:
θ x＝rem(θ A+θ B,2π),θ y＝rem(θ c+θ B,2π)，
m x＝fix[(θ A+θ B)/2π],m y＝fix[(θ c+θ B)/2π]
Wherein rem () represents remainder, and fix () expression rounds.So photon position coordinates can be expressed as:
X = λ θ x 2 π + m x λ , Y = λ θ y 2 π + m y λ
Here coefficient lambda=5.346mm.
To be that circuit structure is simplified, volume is little be easy to carry advantage of the present invention, and simple operation, the spatial resolution of detector is high, meets the application requirement of survey of deep space and ultraviolet spectrum instrument.
The present embodiment just illustrates for Vernier anode detector is for example; obviously mentality of designing according to the present invention different distortion can be made; the position sensing circuit system of the ultraviolet detector of different anode can be derived; and by institute publicize and implement example restriction, these be out of shape all among the protection domain of the invention.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.

Claims (3)

1., with a ultraviolet photon digital detector for position sensing circuit, it is characterized in that, comprising:
Multiplex pulse gathers and position sensing circuit system, comprising: the Charge sensitive amplifier module of artificial circuit part, filter shape module, peak value hold module, and the analog-to-digital conversion module of digital circuits section, usb data module for reading and writing, software image system;
Charge sensitive amplifier module comprises multiple charge amplifiers, is respectively used to the induced charge receiving the output of each electrode of ultraviolet detector anode, is converted into voltage signal; Obtain the signal of a high impedance, low noise, deal with for follow-up circuit and collect;
The voltage signal that filter shape module is used for coming front end charge conversion carries out waveform adjustment and improves Signal-to-Noise, forms the pulse of an approximate Gaussian waveform;
Peak value hold module is used for the peak value broadening of the pulse signal of accurate Gaussian waveform, improves the sampling accuracy of follow-up A/D sample circuit;
The pulse signal that analog-to-digital conversion module is used for ultraviolet detector mimic channel exports accurately is sampled, and sampling terminates the rear simulating signal quantification treatment to adopting, and is converted to the digital signal of 12 precision;
Usb data module for reading and writing is the mode transmitting data with USB, the pulse signal amount of adopting constantly is sent to computing machine in real time, stores with 16 binary form in hard disc of computer;
Software decode image-forming module is used for making analog quantity restore calculation to the digital signal that computing machine receives, and according to the decoding formula of detector anode, the analog value of each pulse is converted to the two-dimensional position coordinate of photon, on software, finally demonstrates the location drawing picture of each photon.
2. the ultraviolet photon digital detector with position sensing circuit according to claim 1, is characterized in that, described Charge sensitive amplifier module comprises 9 charge amplifiers.
3. the ultraviolet photon digital detector with position sensing circuit according to claim 1, is characterized in that, be also provided with data rate matching module, for mating data rate.
CN201410508243.6A 2014-09-26 2014-09-26 Ultraviolet photon counting detector with position readout circuit Pending CN104317214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410508243.6A CN104317214A (en) 2014-09-26 2014-09-26 Ultraviolet photon counting detector with position readout circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410508243.6A CN104317214A (en) 2014-09-26 2014-09-26 Ultraviolet photon counting detector with position readout circuit

Publications (1)

Publication Number Publication Date
CN104317214A true CN104317214A (en) 2015-01-28

Family

ID=52372458

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410508243.6A Pending CN104317214A (en) 2014-09-26 2014-09-26 Ultraviolet photon counting detector with position readout circuit

Country Status (1)

Country Link
CN (1) CN104317214A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896881A (en) * 2018-06-22 2018-11-27 北京科益虹源光电技术有限公司 A kind of tip pulse detection system
CN109491960A (en) * 2018-11-09 2019-03-19 中国科学院长春光学精密机械与物理研究所 A kind of position reading circuit reducing pattern distortion
CN111721411A (en) * 2020-06-30 2020-09-29 北京工业大学 Signal processing circuit for high-space-time resolution photon counting imaging
CN112987075A (en) * 2021-02-09 2021-06-18 天津大学 Delay line position sensitive detector system and method
WO2023158759A3 (en) * 2022-02-16 2023-10-12 KoBold Metals Company Muon detector for muon tomography

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101080653A (en) * 2004-12-17 2007-11-28 皇家飞利浦电子股份有限公司 Pulsed X-ray for continuous detector correction
US20080112535A1 (en) * 2006-11-09 2008-05-15 Wojcik Timothy J Retrofit digital mammography detector
JP2008256675A (en) * 2007-03-13 2008-10-23 Canon Inc Radiation imaging apparatus, and method and program for controlling the same
CN102313896A (en) * 2010-07-02 2012-01-11 富士胶片株式会社 Radiation detecting element and radiographic imaging device
CN103792004A (en) * 2014-01-22 2014-05-14 中国科学院长春光学精密机械与物理研究所 Ultraviolet spherical micro-channel plate photo counting and imaging detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101080653A (en) * 2004-12-17 2007-11-28 皇家飞利浦电子股份有限公司 Pulsed X-ray for continuous detector correction
US20080112535A1 (en) * 2006-11-09 2008-05-15 Wojcik Timothy J Retrofit digital mammography detector
JP2008256675A (en) * 2007-03-13 2008-10-23 Canon Inc Radiation imaging apparatus, and method and program for controlling the same
CN102313896A (en) * 2010-07-02 2012-01-11 富士胶片株式会社 Radiation detecting element and radiographic imaging device
CN103792004A (en) * 2014-01-22 2014-05-14 中国科学院长春光学精密机械与物理研究所 Ultraviolet spherical micro-channel plate photo counting and imaging detector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
冀伟田: "基于THGEM的热中子位置灵敏探测器的读出", 《中国优秀硕士学位论文全文数据库·工程科技Ⅱ辑》 *
尼启良: "极紫外微通道板光子计数成像探测器性能研究", 《光学学报》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896881A (en) * 2018-06-22 2018-11-27 北京科益虹源光电技术有限公司 A kind of tip pulse detection system
CN109491960A (en) * 2018-11-09 2019-03-19 中国科学院长春光学精密机械与物理研究所 A kind of position reading circuit reducing pattern distortion
CN109491960B (en) * 2018-11-09 2022-02-22 中国科学院长春光学精密机械与物理研究所 Position reading circuit for reducing image distortion
CN111721411A (en) * 2020-06-30 2020-09-29 北京工业大学 Signal processing circuit for high-space-time resolution photon counting imaging
CN111721411B (en) * 2020-06-30 2021-06-04 北京工业大学 Signal processing circuit for high-space-time resolution photon counting imaging
CN112987075A (en) * 2021-02-09 2021-06-18 天津大学 Delay line position sensitive detector system and method
WO2023158759A3 (en) * 2022-02-16 2023-10-12 KoBold Metals Company Muon detector for muon tomography

Similar Documents

Publication Publication Date Title
CN104317214A (en) Ultraviolet photon counting detector with position readout circuit
CN108732553B (en) Laser radar waveform time identification method and online ranging system
CN101666227B (en) Method for acquiring natural gamma spectra
CN102819006B (en) Broadband direction finding control method based on frequency domain correlation interferometer
CN103698770A (en) Multi-channel laser echo time measurement system based on FPGA (Field Programmable Gate Array) chip
CN105137444B (en) Double optical interference circuit FM-CW laser ranging signal processing methods
CN102323959B (en) Capture card for time-resolved photon counting imaging
CN103176204B (en) Wireless distributed Tunnel prediction sniffer, system and method
CN103117973A (en) Multiplex parallel demodulating system based on orthogonal detection
CN110455282A (en) A kind of digital termination system applied to observations of pulsar
CN103543431A (en) Method and system for measuring errors of electromagnetic type mutual inductor based on digital signal processing
CN103338024B (en) The complementary Kalman filtering apparatus and method of time delay in antenna array
CN205049136U (en) Unmanned aerial vehicle flight height measuring device
CN101603817A (en) The checkout equipment of thickness of glass and detection method
Li et al. An optical fiber-based flexible readout system for micro-pattern gas detectors
CN105181153B (en) Avalanche photodetectors gain measuring method based on waveform area
CN110873864B (en) Linear array laser radar range profile simulation device and method
CN103940707A (en) Method and device for counting insoluble particles
CN103968943A (en) Accurate measurement method for signal-to-noise ratio of fiber optic spectrometer
CN106371133A (en) Large dynamic fast neutron yield measurement system and realization method thereof
CN202693007U (en) High-speed fiber grating demodulating system based on hardware peak searching
CN104330157A (en) Narrow pulse width laser micro-peak-value power density testing instrument and method
CN104374972A (en) High-accuracy oscilloscope
CN103389512A (en) Digital collection and transmission circuit for near-field subwaves and auxiliary signals of air gun earthquake focus
CN202502254U (en) Electrical prospecting apparatus

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150128