-
1.发明授权X-ray generator having multiple extractors with independently selectable potentials 有权X射线发生器具有多个提取器，具有独立可选择的电位公开(公告)号：US09448327B2
公开(公告)日：2016-09-20
申请号：US14108244
申请日：2013-12-16
发明人： Luke Perkins
CPC分类号： G01V5/12 , H01J35/04 , H01J35/045 , H01J35/30
摘要： A logging tool is for determining a property of a subsurface formation having a borehole therein and includes a housing to fit within the borehole. An x-ray generator is carried by the housing and includes at least three extractor electrodes, an electron emitter to emit electrons toward the extractor electrodes, and a target downstream of the extractor electrodes. The extractor electrodes have independently selectable potentials so as to allow direction of an electron beam, formed from the electrons emitted by the electron emitter, toward different longitudinal and lateral regions of the target, the target to emit x-rays into the subsurface formation when struck by the electron beam. A radiation detector is carried by the housing to detect incoming radiation resulting from interactions between the x-rays and the subsurface formation. Processing circuitry is coupled to the radiation detector to determine the property of the subsurface formation based upon detected incoming radiation.
摘要翻译： 测井工具用于确定其中具有钻孔的地下地层的特性，并且包括适合于钻孔内的壳体。 X射线发生器由壳体承载，并且包括至少三个提取器电极，向提取器电极发射电子的电子发射器，以及提取器电极下游的靶。 提取器电极具有可独立选择的电位，以允许由电子发射器发射的电子形成的电子束朝向目标的不同纵向和横向区域的方向，目标在被击打时将x射线发射到地下地层 通过电子束。 辐射检测器由壳体承载以检测由x射线和地下地层之间的相互作用产生的入射辐射。 处理电路耦合到辐射检测器，以基于检测到的入射辐射来确定地下地层的性质。
-
公开(公告)号：US08866068B2
公开(公告)日：2014-10-21
申请号：US13728950
申请日：2012-12-27
发明人： Jani Reijonen , Luke Perkins , Harold Pfutzner
CPC分类号： H01J27/205 , G01V5/085 , H01J1/3044 , H01J3/04 , H01J2201/30411
摘要： An ion source for use in a particle accelerator includes at least one cathode. The at least one cathode has an array of nano-sized projections and an array of gates adjacent the array of nano-sized projections. The array of nano-sized projections and the array of gates have a first voltage difference such that an electric field in the cathode causes electrons to be emitted from the array of nano-sized projections and accelerated downstream. There is a ion source electrode downstream of the at least one cathode, and the at least one cathode and the ion source electrode have the same voltage applied such that the electrons enter the space encompassed by the ion source electrode, some of the electrons as they travel within the ion source electrode striking an ionizable gas to create ions.
摘要翻译： 用于粒子加速器的离子源包括至少一个阴极。 所述至少一个阴极具有纳米尺寸突起的阵列和邻近纳米尺寸突起阵列的门阵列。 纳米尺寸突起阵列和栅极阵列具有第一电压差，使得阴极中的电场使电子从纳米尺寸突起阵列发射并加速下游。 在至少一个阴极的下游存在离子源电极，并且至少一个阴极和离子源电极施加相同的电压，使得电子进入由离子源电极包围的空间中，一些电子就像它们 在离子源电极内行进进入可电离气体以产生离子。
-
3.发明申请公开(公告)号：US20170226848A1
公开(公告)日：2017-08-10
申请号：US15500717
申请日：2015-07-31
发明人： Vincent Chatelet , Axel Quignard , Peter Wraight , Jean-Pierre Poyet , Fabien Nibodeau , Luke Perkins
CPC分类号： E21B47/122 , E21B47/12 , G01V5/10 , G01V11/002
摘要： An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.
-
4.发明授权Pulsed neutron generator tube design which extends the lifetime of a cathode 有权脉冲中子发生器管设计延长了阴极的使用寿命公开(公告)号：US09322262B2
公开(公告)日：2016-04-26
申请号：US13718888
申请日：2012-12-18
发明人： Leo Chirovsky , Luke Perkins , Jani Reijonen , Loic Vilde
CPC分类号： E21B47/00 , G01N23/005 , G01N33/24 , G21G4/02 , H05H3/06
摘要： A method for operating a pulsed neutron generator including an ionizer with an electron emitting cathode and a grid wherein the cathode and grid are disposed in a sealed chamber. At least one of the following is applicable to the ionizer; a distance between the cathode and the grid, a cathode current and/or a potential on the grid are selected such that the ionizer operates at most about one-half the space charge limited current for a grid current selected to provide a predetermined amount of neutron production.
摘要翻译： 一种用于操作脉冲中子发生器的方法，其包括具有电子发射阴极和栅极的电离器，其中阴极和栅极设置在密封室中。 以下至少一项适用于电离器; 选择阴极和栅极之间的距离，栅极上的阴极电流和/或电势，使得电离器对于选择用于提供预定量的中子的电网电流的空间电荷限制电流的至多约一半的操作 生产。
-
公开(公告)号：US09129770B2
公开(公告)日：2015-09-08
申请号：US13830401
申请日：2013-03-14
CPC分类号： H01J27/205 , G21G4/02 , H01J27/02 , H01J27/08 , H01J27/16
摘要： An ion source for use in a radiation generator includes a sealed envelope containing an ionizable gas therein. The ion source also includes a RF antenna external to the sealed envelope, the RF antenna to transmit time-varying electromagnetic fields within the sealed envelope for producing ions from the ionizable gas. There is at least one extractor within the sealed envelope having a potential such that the ions are attracted toward the at least one extractor.
摘要翻译： 用于辐射发生器的离子源包括其中含有可电离气体的密封外壳。 离子源还包括在密封外壳外部的RF天线，RF天线用于传输密封外壳内的时变电磁场，用于从可电离气体产生离子。 密封外壳内有至少一个提取器具有使得离子被吸引到至少一个提取器的电位。
-
公开(公告)号：US20140265858A1
公开(公告)日：2014-09-18
申请号：US13830437
申请日：2013-03-14
IPC分类号： H01J27/02
CPC分类号： H01J27/024
摘要： An ion source for use in a radiation generator includes an active cathode configured to emit electrons on a trajectory away from the active cathode, at least some of the electrons as they travel interacting with an ionizable gas to produce ions. In addition, there is at least one extractor downstream of the active cathode having a potential such that the ions are attracted toward the at least one extractor.
摘要翻译： 用于辐射发生器的离子源包括被配置为在远离有源阴极的轨迹上发射电子的活性阴极，当它们与可电离气体相互作用以产生离子时，至少一些电子。 此外，在活性阴极的下游存在至少一个提取器，其具有使得离子被吸引到至少一个提取器的电位。
-
公开(公告)号：US20140183376A1
公开(公告)日：2014-07-03
申请号：US13728955
申请日：2012-12-27
发明人： Luke Perkins
IPC分类号： H01J27/20
CPC分类号： H01J27/205
摘要： An ion source for use in a radiation generator tube includes a back passive cathode electrode, a passive anode electrode downstream of the back passive cathode electrode, a magnet adjacent the passive anode electrode, and a front passive cathode electrode downstream of the passive anode electrode. The front passive cathode electrode and the back passive cathode electrode define an ionization region therebetween. At least one ohmically heated cathode is configured to emit electrons into the ionization region. The back passive cathode electrode and the passive anode electrode, and the front passive cathode electrode and the passive anode electrode, have respective voltage differences therebetween, and the magnet generating a magnetic field, such that a Penning-type trap is produced to confine the electrons to the ionization region. At least some of the electrons in the ionization region interact with an ionizable gas to create ions.
摘要翻译： 用于辐射发生器管的离子源包括后无源阴极电极，位于后无源阴极电极下游的无源阳极电极，与被动阳极电极相邻的磁体和在被动阳极电极下游的前被动阴极电极。 前无源阴极电极和后无源阴极电极在其间限定电离区域。 至少一个欧姆加热阴极被配置为向电离区域发射电子。 后无源阴极电极和被动阳极电极以及前被动阴极电极和被动阳极电极之间具有各自的电压差，并且磁体产生磁场，使得产生Penning型阱以限制电子 到电离区域。 电离区域中的至少一些电子与可电离气体相互作用以产生离子。
-
公开(公告)号：US09633813B2
公开(公告)日：2017-04-25
申请号：US13728955
申请日：2012-12-27
发明人： Luke Perkins
IPC分类号： H01J27/20
CPC分类号： H01J27/205
摘要： An ion source for use in a radiation generator tube includes a back passive cathode electrode, a passive anode electrode downstream of the back passive cathode electrode, a magnet adjacent the passive anode electrode, and a front passive cathode electrode downstream of the passive anode electrode. The front passive cathode electrode and the back passive cathode electrode define an ionization region therebetween. At least one ohmically heated cathode is configured to emit electrons into the ionization region. The back passive cathode electrode and the passive anode electrode, and the front passive cathode electrode and the passive anode electrode, have respective voltage differences therebetween, and the magnet generating a magnetic field, such that a Penning-type trap is produced to confine the electrons to the ionization region. At least some of the electrons in the ionization region interact with an ionizable gas to create ions.
-
公开(公告)号：US09184019B2
公开(公告)日：2015-11-10
申请号：US13830437
申请日：2013-03-14
IPC分类号： H01J27/02
CPC分类号： H01J27/024
摘要： An ion source for use in a radiation generator includes an active cathode configured to emit electrons on a trajectory away from the active cathode, at least some of the electrons as they travel interacting with an ionizable gas to produce ions. In addition, there is at least one extractor downstream of the active cathode having a potential such that the ions are attracted toward the at least one extractor.
摘要翻译： 用于辐射发生器的离子源包括被配置为在远离有源阴极的轨迹上发射电子的活性阴极，当它们与可电离气体相互作用以产生离子时，至少一些电子。 此外，在活性阴极的下游存在至少一个提取器，其具有使得离子被吸引到至少一个提取器的电位。
-
公开(公告)号：US20140183348A1
公开(公告)日：2014-07-03
申请号：US13728950
申请日：2012-12-27
发明人： Jani Reijonen , Luke Perkins , Harold Pfutzner
CPC分类号： H01J27/205 , G01V5/085 , H01J1/3044 , H01J3/04 , H01J2201/30411
摘要： An ion source for use in a particle accelerator includes at least one cathode. The at least one cathode has an array of nano-sized projections and an array of gates adjacent the array of nano-sized projections. The array of nano-sized projections and the array of gates have a first voltage difference such that an electric field in the cathode causes electrons to be emitted from the array of nano-sized projections and accelerated downstream. There is a ion source electrode downstream of the at least one cathode, and the at least one cathode and the ion source electrode have the same voltage applied such that the electrons enter the space encompassed by the ion source electrode, some of the electrons as they travel within the ion source electrode striking an ionizable gas to create ions.
摘要翻译： 用于粒子加速器的离子源包括至少一个阴极。 所述至少一个阴极具有纳米尺寸突起的阵列和与纳米尺寸突起阵列相邻的栅极阵列。 纳米尺寸突起阵列和栅极阵列具有第一电压差，使得阴极中的电场使电子从纳米尺寸突起阵列发射并加速下游。 在至少一个阴极的下游存在离子源电极，并且至少一个阴极和离子源电极施加相同的电压，使得电子进入由离子源电极包围的空间中，一些电子就像它们 在离子源电极内行进进入可电离气体以产生离子。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.015 秒)
