期刊:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2021年1008:165430 ISSN:0168-9002
通讯作者:
Hongbang Liu<&wdkj&>Xiangming Sun
作者机构:
[Xiao, Le; Sun, Xiangming; Li, Zili; Gao, Chaosong] Cent China Normal Univ, PLAC, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;[Zhang, Jin; Cai, Xinchen; Feng, Huanbo; Liu, Hongbang; Huang, Xuefeng; Feng, Zuke; Su, Jiaqi] Guangxi Univ, Guangxi Key Lab Relativist Astrophys, Sch Phys Sci & Technol, Nanning 530004, Peoples R China.;[Liu, Qian] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.
通讯机构:
[Hongbang Liu] G;[Xiangming Sun] P;Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning 530004, China<&wdkj&>PLAC, Key Laboratory of Quark & Lepton Physics (MOE), Central China Normal University, Wuhan 430079, China
摘要:
We present the assembly and preliminary results of a prototype detector, which was developed to evaluate the performance of the Topmetal-II- for application in Soft X-ray Polarimeter (SXP). SXP is used to measure the polarization of X-rays emitted from randomly occurring gamma-ray bursts (GRBs) and other specific dense celestial bodies. The Topmetal-II- is a silicon pixel sensor designed to directly track charged particles. The test was conducted on a gas mixture of Ne and DME at 0.8 atm pressure, and the Topmetal-II- sensor was used to image the photoelectron tracks. Typical real X-ray tracks obtained under four conditions are presented in this paper. The modulation factor derived from the tracks of 100% polarized 4.5 keV X-rays reached similar to 29% at similar to 53% signal efficiency, with a residual modulation of the order of similar to 2% for unpolarized 5.9 keV X-rays.
摘要:
We present a distributed, self-organizing and fault-tolerant readout network Application Specific Integrated Circuit (ASIC) for the high-density electrode array targeting at neutrinoless double-beta decay search in Time Projection Chamber (TPC). A meter-sized plane tiled by approximately 1 x 10(5) single-electrode Topmetal-S sensors with a pitch of 5 similar to 10 mm is utilized to realize charge readout plane in a ton-scale high-pressure gaseous TPC. A sensor network is proposed under the premise of ensuring the tightness and radioactive purity of the high-pressure TPC. As a node of the network, each sensor not only generates and transmits its own data but also forwards the data from its adjacent sensors. Therefore, a Readout and Data-Routing Circuit (RDRC) is integrated into each sensor. To realize the RDRC, a distributed readout network ASIC is fabricated in a 130 nm CMOS Technology. A routing algorithm called Fault-Tolerance XY (FT-XY) is implemented to avoid the faulty sensors from disabling large sections of the network. A single ASIC and a 3 x 3 network have been tested. The test results show that the throughput of the 3 x 3 network reaches 110.52 Mbit/s.
期刊:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2020年978:164424 ISSN:0168-9002
通讯作者:
Zhao, Chengxin
作者机构:
[Yang, Haibo; Yu, Deyang; Li, Xianqin; Gao, Liling; Feng, Yongchun; Zhang, Yuezhao; Zhang, Honglin; Liu, Junliang; Zhao, Chengxin; Jin, Ying] Chinese Acad Sci, Inst Modern Phys, 509 Nanchang Rd, Lanzhou 730000, Peoples R China.;[Yang, Haibo; Yu, Deyang; Zhang, Honglin; Liu, Junliang; Zhao, Chengxin; Jin, Ying] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China.;[Sun, Xiangming] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Peoples R China.;[Sun, Wenjian; Peng, Peng] Northwest Normal Univ, Coll Phys & Elect, Lanzhou 730070, Peoples R China.;[Guan, Dinghao] Cent South Univ, Sch Geosci & Infophys, Changsha 410083, Peoples R China.
通讯机构:
[Zhao, Chengxin] C;Chinese Acad Sci, Inst Modern Phys, 509 Nanchang Rd, Lanzhou 730000, Peoples R China.
关键词:
Low-energy heavy ion beam;Residual gas ionization profile monitor;Pixelated microchannel plate detector;Compensation fields
摘要:
In this paper, a Pixelated Residual Gas Ionization Profile Monitor (RGIPM) has been proposed for the 320 kV High-Voltage Platform at the Institute of Modern Physics, Chinese Academy of Sciences. Beam profile monitoring in both the horizontal and vertical directions is realized in one-meter length. A compact microchannel plate (MCP) detector with an array of the Topmetal-II- pixel ASIC as the anode is proposed for the device. The spatial resolution of the detector is expected to be comparable to the intrinsic pixel size of the anode. Compensation electric and magnetic fields have been integrated into the RGIPM to minimize the influence of the measurement fields on the transportation of low energy ion beams. This paper presents the test results of a prototype of the MCP detector and the study on the electric and magnetic fields.
摘要:
This paper presents a novel six-transistor (6T) Static Random Access Memory (SRAM) cell, which uses only one bit line and applies an additional switch to cut the competition path during the write access. The proposed 6T SRAM cell has been applied in a pixel array detector to configure a digital-to-analog converter in each pixel to improve the charge threshold uniformity. Compared to the conventional 6T SRAM cell, the proposed 6T SRAM cell features lower power consumption and smaller area. Simulation results show the power consumption is reduced by about 43% and all the transistors are designed by minimum size to reduce the area but without the performance degradation. The test results show that the novel 6T SRAM cell works very well.
通讯机构:
[Sun, XM; Yang, P] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Peoples R China.
关键词:
CMOS monolithic active pixel sensor;CEPC;Zero-suppression data-driven readout;ENC;SEL;SEU
摘要:
The Circular Electron Positron Collider (CEPC) is proposed as a Higgs factory to produce adequate events, which are the basis for high-precision measurements of the Higgs boson. The vertex detector in the CEPC should meet the requirements of a low material budget, high spatial resolution, fast readout speed and low power consumption. A monolithic active pixel sensor (MAPS) has been selected as the most promising technology for the vertex detector. The MIC4 sensor is the first prototype developed within the preliminary R&D activities of the CEPC vertex detector. It has been implemented in the TowerJazz 180 nm CMOS image sensor (CIS) process. It measures 3.1 mm x 4.6 mm and features a 128 row x 64 column pixel array with a pixel pitch of 25 mu m. In this work, a binary front-end has been designed for a compact pixel combined with a sparsified readout circuitry. Each pixel is composed of an amplifier, a shaper, a discriminator and digital logic. A new asynchronous zero-suppression data-driven readout circuit architecture is proposed and implemented in MIC4. We have performed some initial tests on this chip and obtained detailed results. The front-end features a peaking time below 1 mu s, a shaping time less than 3 mu s, a charge threshold of approximately 100 e(-), an average temporal noise (TN) of 6 e(-) and a fixed pattern noise (FPN) of 36 e(-). The addresses of the fired pixels can be readout in the digital part of the chip at a clock running at 30 MHz with the new data-driven readout circuit architecture. The hit map under Fe-55 X-ray exposure shows that the sensor designed in MIC4 works well. The probability of single event latch-up (SEL) sigma(SEL) is 1.02 x 10(-6) cm(2) at a linear energy transfer (LET) of 20.05 MeV cm(2)/mg.
摘要:
Single-event latchups (SELs) are easily triggered when high-energy heavy ions attack the sensitive parts of integrated circuits (ICs). The main strategy to improve the ability of ICs to resist SELs is to thoroughly evaluate the sensitivities of all parts, which requires that the SEL be located with high accuracy. We have proposed a method of using silicon pixel sensors as the positioning chips to track single heavy ions and obtain the hit points attacked on an IC through analysis of ion tracks. The method can locate SELs and obtain a distribution map of sensitive parts with high accuracy. In this paper, we present the first image of a single heavy ion in our prototype detector using Topmetal-II-sensors as the positioning chips. The test results show that the detector can locate heavy ions with a position resolution better than 7 mu m and angular resolution better than 0.3 degrees. The maximum measurable flux of the heavy ion beam can reach 10(5) ions/(cm(2).s) in future if a high-readout rate positioning chip is adopted.
会议名称:
11th International Hiroshima Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD) in conjunction with 2nd Workshop on SOI Pixel Detector (SOIPIX)
会议时间:
DEC 11-15, 2017
会议地点:
Okinawa Inst sci & Technol Grad Univ, Okinawa, JAPAN
会议主办单位:
Okinawa Inst sci & Technol Grad Univ
关键词:
Serial link transmitter;MAPS;Radiation tolerance;Reed-Solomon code;Serializer;FEC
通讯机构:
[Huang, GM; Sun, XM] C;Ctr China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Hubei, Peoples R China.
会议名称:
11th International Hiroshima Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD) in conjunction with 2nd Workshop on SOI Pixel Detector (SOIPIX)
会议时间:
DEC 11-15, 2017
会议地点:
Okinawa Inst sci & Technol Grad Univ, Okinawa, JAPAN
会议主办单位:
Okinawa Inst sci & Technol Grad Univ
关键词:
Topmetal;Pixel;Low noise readout chip;CdZnTe;Leakage current;Induced signal simulation
摘要:
In order to solve the leakage current saturation of Topmetal-II- and to maintain its low noise, Topmetal-IIa has been designed. The new chip has the same Rolling-Shutter module as Topmetal-II-. It contains a charge-collection electrode and a metal layer surrounding it, called guard ring. This new design contains three different sections. Section A has the same structure as Topmetal-II-, in that the electrode is exposed and guard ring is covered by insulating layer. Section B has both electrode and guard ring exposed. Section C has guard ring exposed but electrode covered by insulating layer. Preliminary experiments show that if coupled with CdZnTe detector, Section C of the Topmetal-IIa chip is capable of solving the leakage current saturation. Meanwhile, the electrode receives induced signal. Moreover, the charge induction efficiency is influenced by several parameters, such as thickness of adhesive epoxy resin, collecting electrode size, etc. Thus, the optimization of parameters for induction efficiency is studied by simulations. According to the simulation results, it can be concluded that thinner epoxy resin thickness and bigger anode size contribute to higher induction efficiency.
摘要:
为了验证MIC4(MAPS In CCNU 4)像素传感器数字读出系统功能和提高测试平台的重用性,结合UVM验证方法学的高效性及UVM验证平台可重用性的特点,搭建了层次化的模块级验证平台由于该测试平台是层次化的模块级验证平台,只需修改验证平台中个别的元件达到重用的目的.验证结果分析表明,MIC4像素传感器读出系统验证平台移植到UVM中,可以提高验证的效率.