Institutional Repository of Institute of Modern Physics, CAS
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Development of Silicon Microstrip Detector
No full text硅微条探测器是一种性能优异的半导体位置灵敏探测器。芯片主要制作工艺包括清
洗、氧化、光刻、刻蚀（或腐蚀）、注入、退火、金属化、合金，需要在硅片上反复进
行操作，要求非常严格。通常使用表面电阻率5000-20000 Ω•cm 的高阻硅片（进口，
区熔法生长）制作。工艺前后通过多种光学、电气手段严格检测工艺效果和质量。后端
封装工艺主要包括划片、胶粘、键合。
我们自行建造了一条小型柔性微电子工艺线，拥有主要工艺及条件设备，基本电气、
光学检测设备。利用该工艺线制作了国内第一块硅微条探测器芯片。此双面二维硅微条
探测器芯片（50 mm·50 mm，P 面、N 面各96 条），金属化前利用探针测试台测得单条
反向电阻超过200 MΩ；测量能量5.486 MeV 的α能谱（241Am），能量分辨率平均约为3%，
最高为1.8%。该芯片为实验片，使用国产硅片（电阻率较低，缺陷较多）制作，测试在
大气下进行，入射粒子没有经过准直。正式芯片将使用进口高阻硅片制作，金属化并完
成封装后，在真空下测试，采用新型电子学插件，入射粒子经过准直，能量分辨率将有
很大提高
用于重离子辐照器件的多维定位装置
No full text本实用新型涉及一种用于重离子辐照器件的定位装置。一种用于重离子辐照器件的多维定位装置，包括有工作台(1)，其上设有底座(3)，其主要特点是在底座(3)上设有与工作台(1)垂直的滑轨(2)；在滑轨(2)上设有升降工作台(5)。本实用新型的优点是在重离子辐照实验中，快速地根据预先测定好的位置进行定量的切换定位装置，实现了在重离子辐照实验中微电子器件的三维平动和一维转动。对于采集数据和获得数据的质量以及提高实验效率、节省束流时间具有重要的意义。操作简单方便，位置精度高，结构新颖、简单并实现了定量调整和控制，为今后进一步实现计算机自动控制打下了结构基础
HIRFL-CSR FACILITY STATUS AND DEVELOPMENT*
No full textAbstract<br />The HIRFL-CSR facility come into operation by the<br />end of 2007. During operation in recent years, CSR<br />supplied beam for experiments at several terminals and<br />inside both CSRm and CSRe rings. The experiments<br />covers high resolution mass measurement, cancer therapy<br />research, neutron wall, atomic physics using electron<br />target and internal gas target, using injection beam<br />mainly from the SFC of cyclotron injector. New methods<br />and further developments are required to improve the<br />performance of CSR system including multi-gradients<br />measurement method for beam spot commissioning and<br />beam transfer, nonlinear effect correction and stabilization<br />of isochronous mode of CSRe. For suppling of heverier<br />ion beam with proper ernergy, the cyclotron complex<br />should be enhanced and new injector is proposed to<br />replace SFC as injector of SSC
EXTRACTION SYSTEM OF A COMPACT CYCLOTRON
No full textBased on the beam orbit and dynamics simulations, the<br />extraction system of a compact cyclotron is determined,<br />and the beam parameters of the extracted beam are<br />calculated
KHARKOV COMPACT CYCLOTRON CV-28: PRESENT
No full textReported are the present and future statuses of the<br />Kharkov Compact Cyclotron CV-28 donated to the<br />National Science Center - Kharkov Institute of Physics &<br />Technology (NSC KIPT) by the Forschungszentrum<br />Juelich (Germany). The cyclotron configuration and<br />special features of new installation at the NSC KIPT are<br />described. Consideration is given to the use of the<br />cyclotron beam as a promising means for investigation<br />and development of materials for fusion reactors and<br />generation-IV nuclear reactors, investigation and<br />production of medical radionuclides, possible applications<br />of a high-energy neutron source based on a deuteron<br />beam and a thick beryllium target
25 YEARS OF CONTINUOUS OPERATION OF THE SEATTLE CLINICAL
No full textThe clinical cyclotron facility at the University of<br />Washington Medical Center has now been in continuous<br />operation for over 25 years. It is highly reliable, and fast<br />neutron therapy remains its primary application, mostly<br />for salivary gland tumors. Neutron therapy accounts for<br />about 85% of the facility use time. In cases where the<br />tumor involves the base of the skull, significant<br />improvements of patient outcome have been achieved by<br />combining the neutron treatment with a Gamma Knife®<br />boost to areas where the neutron dose is limited by<br />adjacent healthy tissue
STUDIES OF ECRIS ION BEAM FORMATION AND QUALITY AT THE DEPARTMENT OF PHYSICS, UNIVERSITY OF JYV¨ ASKYL¨A∗
No full textDuring the last couple of years a lot of effort has been<br />put into studies concerning the ion beam formation and<br />beam quality of electron cyclotron resonance ion sources<br />(ECRISs) at the Department of Physics, University of<br />Jyv¨askyl¨a (JYFL). The effects of microwave frequency fine<br />tuning on the performance of JYFL 14 GHz ECRIS have<br />been studied with multiple experiments in collaboration<br />with INFN-LNS (Instituto Nazionale di Fisica Nucleare,<br />Laboratori Nazionali del Sud). Also, a number of measurements<br />have been carried out to study the effects of space<br />charge compensation of ion beams on the beam quality. In<br />order to proceed further with these studies, a modified version<br />of the beam potential measurement device developed<br />at LBNL (Lawrence Berkeley National Laboratory) is under<br />development. Simulations are used to study the possibility<br />to improve the beam quality by biasing the beginning<br />of the beam line upstream from m/q separation. With<br />high voltage biasing the beam energy could be increased<br />temporarily over the limit of the injection system of the accelerator.<br />Latest results and current status of these projects<br />will be presented and discussed.IMP;Chinese Academy of Science
MEDIAN PLANE EFFECTS AND MEASUREMENT METHOD FOR RADIAL COMPONENT OF MAGNETIC FIELD IN AVF CYCLOTRONS
No full textThe median plane of the magnetic field in AVF
cyclotrons rather often does not coincide with the midplane
of their magnetic system. The idea of an effective
median plane formulated by J.I.M.Botman and
H.L.Hagedorn [1] for the central region of the cyclotron is
extended to the entire working region and tolerances for
the horizontal components of the magnetic field are
estimated. Equipment based on the search coils is
proposed and used for measurement of the radial
component of the magnetic field and for correction of the
magnetic field median plane.IMP;Chinese Academy of Science
POST-ACCELERATION OF HIGH INTENSITY RIB THROUGH THE CIME CYCLOTRON IN THE FRAME OF THE SPIRAL2 PROJECT AT GANIL
No full textThe cyclotron CIME is presently used at GANIL for
the acceleration of SPIRAL1 radioactive beams. One of
the goals of the SPIRAL2 project is to produce, postaccelerate
and use in the existing experimental areas
much higher intensity secondary beams induced by
uranium fission like neutron-rich krypton, xenon, tin
isotopes, and many others. Intensity may reach 1010 pps.
Specific developments are needed for secondary beam
diagnostics. Improvement of mass separation is also
necessary, and the Vertical Mass Separator (VMS) is
specially developed for this purpose.
However, the main concern is related to the high
radioactivity linked to RIB high intensity. Safety and
radioprotection issues will require modifications of the
installation with special care for the maintenance of the
cyclotron. The experience of the SPIRAL1 beams, in
terms of beam losses and equipment contamination, is
especially useful to define the necessary modificationsIMP;Chinese Academy of Science
PROGRESS ON CONSTRUCTION OF CYCIAE-100
No full textBeijing Radioactive Ion-beam Facility (BRIF) is being
built at China Institute of Atomic Energy (CIAE). As a
driving accelerator for ion beam production, CYCIAE-
100 will provide proton beam of 75MeV～100MeV with
an intensity of 200μA～500μA. At present, the design for
each system has been accomplished and an overall
progress has been made for the CYCIAE-100 project. The
manufacture of the main magnet has entered into the final
assembly stage. Two main magnet coils have been
completed, two 100kW RF amplifiers are tested with full
output power, the main vacuum chamber and main
magnet lift system will be completed soon. The
construction designs and suppliers surveys for other
systems are finished and ready for purchase. Some key
design and technology experiments are in process and
significant results have been achieved in verifications.
The “Central Region Model Test Stand for High Intensity
Cyclotron Development” (CYCIAE-CRM) has
successfully passed the formal certification held by the
competent authorities. A full scale experimental RF
cavity has been fabricated, on which the frequency and Q
value measured coincide well with the numerically
calculation. The verification test of vacuum cryo-panel
structure has provided valuable information to cryo-panel
structure design. The key technical problems related to
CYCIAE-100 project are being solved along with the
progress.IMP;Chinese Academy of Science