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Nuclear Instruments and Methods in Physics Research最新文献

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Study of resolution for a large array of drift chambers 大阵列漂移室的分辨率研究
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-09-01 DOI: 10.1016/0167-5087(84)90086-3
Ulrich Becker
{"title":"Study of resolution for a large array of drift chambers","authors":"Ulrich Becker","doi":"10.1016/0167-5087(84)90086-3","DOIUrl":"10.1016/0167-5087(84)90086-3","url":null,"abstract":"<div><p>Three drift chambers arranged to represent the cross section of the LEP L3 muon detector were used for track measurements. Displacing the middle chamber by 3.8 mm, corresponding to the sagitta of a 45 GeV muon in 5.1 kG, measurements with UV laser tracks 3 m long yield an equivalent momentum resolution of 1.5%.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 3","pages":"Pages 456-462"},"PeriodicalIF":0.0,"publicationDate":"1984-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90086-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79525366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
List of paticipants 参加者名单
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-09-01 DOI: 10.1016/0167-5087(84)90082-6
{"title":"List of paticipants","authors":"","doi":"10.1016/0167-5087(84)90082-6","DOIUrl":"https://doi.org/10.1016/0167-5087(84)90082-6","url":null,"abstract":"","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 3","pages":"Pages viii-ix"},"PeriodicalIF":0.0,"publicationDate":"1984-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90082-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137055741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
List of industries 行业列表
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-09-01 DOI: 10.1016/0167-5087(84)90083-8
{"title":"List of industries","authors":"","doi":"10.1016/0167-5087(84)90083-8","DOIUrl":"https://doi.org/10.1016/0167-5087(84)90083-8","url":null,"abstract":"","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 3","pages":"Page x"},"PeriodicalIF":0.0,"publicationDate":"1984-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90083-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137055742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectrometry of the photon beam from an X-ray tube by X-ray fluorescence 用x射线荧光对x射线管中的光子光束进行光谱分析
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90280-1
L. González , P. Morán , V. Delgado , E. Vañó , A. López-Fraguas
{"title":"Spectrometry of the photon beam from an X-ray tube by X-ray fluorescence","authors":"L. González ,&nbsp;P. Morán ,&nbsp;V. Delgado ,&nbsp;E. Vañó ,&nbsp;A. López-Fraguas","doi":"10.1016/0167-5087(84)90280-1","DOIUrl":"10.1016/0167-5087(84)90280-1","url":null,"abstract":"<div><p>A method to perform the measurement of photon beam spectra from X-ray tubes is described. It consists of exciting the fluorescence of elements with their K-binding energies lying within the energetic range of the bremsstrahlung spectrum, using the tube photon beam, and a <sup>241</sup>Am excitation source as a reference, to normalize individual results of each element. According to the numerical treatment described in this article, uncertainties in relative photon flux determinations range from 10% to 2% depending on the photon energies. This method overcomes the difficulties associated with the detection of high photon rates produced by an X-ray tube.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 413-417"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90280-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78490185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The QDMDQ magnetic spectrograph “RAIDEN” (II) Correction of kinematic line broadening QDMDQ磁谱仪“雷电”(II)运动线展宽的修正
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90266-7
Y. Fujita , S. Morinobu, M. Fujiwara, I. Katayama, T. Yamazaki, H. Ikegami
{"title":"The QDMDQ magnetic spectrograph “RAIDEN” (II) Correction of kinematic line broadening","authors":"Y. Fujita ,&nbsp;S. Morinobu,&nbsp;M. Fujiwara,&nbsp;I. Katayama,&nbsp;T. Yamazaki,&nbsp;H. Ikegami","doi":"10.1016/0167-5087(84)90266-7","DOIUrl":"10.1016/0167-5087(84)90266-7","url":null,"abstract":"<div><p>Kinematic line broadening of the image was corrected by using multipole magnetic fields for the spectrograph “RAIDEN” at the Research Center for Nuclear Physics (RCNP).</p><p>Arrival positions of the collimated rays with various angles of incidence were measured at the focal line as a function of strengths of the multipole magnetic fields. Measurements were performed for various values of the kinematic factor of nuclear particles scattered from the target nucleus. Strengths of the multipole fields which achieved the best directional focussing were extracted from the measured results. The strengths were proportional to the kinematic factor and the kinematic line broadening was corrected up to higher order in the median plane.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 298-307"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90266-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74074324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Track fitting with multiple scattering: A new method 多重散射航迹拟合:一种新方法
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90274-6
Pierre Billoir
{"title":"Track fitting with multiple scattering: A new method","authors":"Pierre Billoir","doi":"10.1016/0167-5087(84)90274-6","DOIUrl":"10.1016/0167-5087(84)90274-6","url":null,"abstract":"<div><p>An analytical calculation of the variance is performed, in some simple case, for standard least-squares estimators of track parameters (accounting for independent measurement errors only); comparison is made with optimal estimators (accounting also for scattering errors, correlated between one point and the following ones). A new method is proposed for optimal estimation: the points measured on the track are included backwards, one by one, in the fitting algorithm, and the scattering is handled locally at each step. The feasibility of the method is shown on real events, for which the geometrical resolution is improved. The algorithm is very flexible and allows fast programmation; moreover the computation time is merely proportional to the number of measured points, contrary to the other optimal estimators.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 352-366"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90274-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83427653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 145
Data acquisition system with encoder and buffer memory modules 数据采集系统具有编码器和缓冲存储器模块
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90273-4
M. Ikeno, S. Inaba, T. Inagaki, T. Sato, K. Takamatsu, T. Tsuru, Y. Yasu, K. Imai, Y. Inagaki, T. Nakamura, J. Shirai, N. Tamura, K. Ohmi, A. Itano, S. Kobayashi, A. Murakami, R. Takashima
{"title":"Data acquisition system with encoder and buffer memory modules","authors":"M. Ikeno,&nbsp;S. Inaba,&nbsp;T. Inagaki,&nbsp;T. Sato,&nbsp;K. Takamatsu,&nbsp;T. Tsuru,&nbsp;Y. Yasu,&nbsp;K. Imai,&nbsp;Y. Inagaki,&nbsp;T. Nakamura,&nbsp;J. Shirai,&nbsp;N. Tamura,&nbsp;K. Ohmi,&nbsp;A. Itano,&nbsp;S. Kobayashi,&nbsp;A. Murakami,&nbsp;R. Takashima","doi":"10.1016/0167-5087(84)90273-4","DOIUrl":"10.1016/0167-5087(84)90273-4","url":null,"abstract":"<div><p>A data acquisition system which consists of encoder and buffer memory modules has been developed for the meson spectroscopy experiment of E64 at KEK. It is simple, flexible and has a high rate performance. The adapted on-line program has a flexible structure and is powerful in monitoring the data acquisition process.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 347-351"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90273-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83963244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The response of BGO scintillation detectors to light charged particles BGO闪烁探测器对轻带电粒子的响应
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90271-0
E.A. Bakkum, C.P.M. van Engelen, R. Kamermans, T.A. Teeling, L.J.M. Timmerman
{"title":"The response of BGO scintillation detectors to light charged particles","authors":"E.A. Bakkum,&nbsp;C.P.M. van Engelen,&nbsp;R. Kamermans,&nbsp;T.A. Teeling,&nbsp;L.J.M. Timmerman","doi":"10.1016/0167-5087(84)90271-0","DOIUrl":"10.1016/0167-5087(84)90271-0","url":null,"abstract":"<div><p>Measurements of the response of BGO crystals to protons in the energy range from 6 to 13 MeV and to alpha particles in the range from 6 to 19 MeV are discussed. Results were obtained with a photomultiplier tube and a photodiode readout. A comparison is made with the response of a NaI(Tl) crystal to 13 MeV protons.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 330-334"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90271-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79037130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
Application of iron-filtered neutrons to radiography of a copper step within a large iron block and to computer tomography of metallic cylinders 铁过滤中子在大铁块内铜台阶的射线照相和金属圆柱体的计算机断层摄影中的应用
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90283-7
Shuji Yamamoto, Kenji Yoneda, Shu A. Hayashi, Katsuhei Kobayashi, Itsuro Kimura, Takashi Suzuki , Hiroshi Nishihara, Satoshi Kanazawa
{"title":"Application of iron-filtered neutrons to radiography of a copper step within a large iron block and to computer tomography of metallic cylinders","authors":"Shuji Yamamoto,&nbsp;Kenji Yoneda,&nbsp;Shu A. Hayashi,&nbsp;Katsuhei Kobayashi,&nbsp;Itsuro Kimura,&nbsp;Takashi Suzuki ,&nbsp;Hiroshi Nishihara,&nbsp;Satoshi Kanazawa","doi":"10.1016/0167-5087(84)90283-7","DOIUrl":"10.1016/0167-5087(84)90283-7","url":null,"abstract":"<div><p>A time-of-flight technique and iron-filtered neutrons were applied to neutron radiography and to computer tomography. By making use of iron-filtered neutrons, the existence of 1 mm thick copper within an iron block of 20 cm thickness could be clearly distinguished. To investigate the possibility of neutron computer tomography using iron-filtered neutrons, two cylindrical metallic samples made of CuFePb and CuFeAl were used. From the reconstructed image of the samples, we could clearly see the internal structures.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 439-444"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90283-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86641744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Enhanced electron transfer in Penning gases 彭宁气体中增强的电子转移
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-15 DOI: 10.1016/0167-5087(84)90270-9
H.E. Schwarz, J. Thornton, I.M. Mason
{"title":"Enhanced electron transfer in Penning gases","authors":"H.E. Schwarz,&nbsp;J. Thornton,&nbsp;I.M. Mason","doi":"10.1016/0167-5087(84)90270-9","DOIUrl":"10.1016/0167-5087(84)90270-9","url":null,"abstract":"<div><p>We present the discovery of the enhanced transfer of electrons produced in avalanches through metal grids in Penning gas mixtures.</p><p>Measurements are presented showing the enhancement which is particularly dramatic at very low transfer fields. With electric fields on either side of the grid in the ratio of 0.015 the transfer ratio is 0.11, representing an increase of a factor of 7 over that predicted and observed in a conventional gas by Bunemann et al. [1]</p><p>We propose a model for this phenomenon and we show that both a uniform electric field and the Penning effect [2] are necessary for this transfer to occur. We also identify a possible reason why other workers have not obtained similar results in Penning mixtures.</p><p>The application of this “Penning transfer” to a position sensitive X-ray detector (the Penning Gas Imager or PGI [3]) is discussed.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 325-329"},"PeriodicalIF":0.0,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90270-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76430218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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