Journal Club 2018-I

2 Jan 2018, 08:00 → 18 May 2018, 18:00 Asia/Shanghai

B324

For Journal Club 2016 http://indico.ihep.ac.cn/event/6420/

For Journal Club 2017 http://indico.ihep.ac.cn/event/6655/ 

Vidyo Info

Room Name JournalClub

Link    http://vidyo.ihep.ac.cn/flex.html?roomdirect.html&key=YZNjIoeWk5bq6yWJfB7IR2ggbQA

Extension 002016100801

Friday, 5 January

1 JC 47

Speaker: Ryuta Kiuchi

Slides 20180105RK.pdf

2 special topic

Speaker: 素玉 肖 (高能所)

Slides 20180105.pdf

3 minutes

Slides Meeting_minutes.pdf

4 JC 48 paper

Speaker: GU Shan (高能所)

Slides PhysRevD.80.072001.pdf

Friday, 12 January

5 Journal Club 48

Speaker: GU Shan (高能所)

Slides JCmeeting_48_gushan.pdf

6 Special Topic 11

Speaker: Mr Kai Liu (Tsinghua University)

Slides resonance_Vs_peaks.pdf

7 Minutes

Speaker: Ms Yu YANG Yuzhen (高能所)

8 JC 49 paper

Speaker: Ms Yu YANG Yuzhen (高能所)

Slides PhysRevLett.94.232002.pdf

Friday, 19 January

9 Journal Club 49

Speaker: Ms Yu YANG Yuzhen (高能所)

Slides 20180119_JC-yuzhen.pdf

10 Special Topic 12

Speaker: 素玉 肖 (高能所)

Slides 20180119.pdf Determination_of_the_number_of_psip_events_at_BESIII.pdf

11 Minutes

Speaker: Ryuta Kiuchi

12 JC 50 paper

Speaker: Ryuta Kiuchi

Slides ATLAS_1-s2.0-S0370269317308511-main.pdf ATLAS_s10052-016-4344-x.pdf

Friday, 26 January

13 Journal Club 50

Speaker: Ryuta Kiuchi

Slides 20180126RK.pdf

14 Special Topic 13

Speaker: Mr Kai Liu (Tsinghua University)

Slides hc(1P)_at_BESIII.pdf

15 Minutes

Speaker: 茂强 荆 (南华大学)

16 JC 51 paper

Speaker: 茂强 荆 (南华大学)

Slides 0804.4432.pdf

Friday, 2 February

17 Journal Club 51

Speaker: 茂强 荆 (南华大学)

Slides 2018-02-02-Jingmq.pdf

18 Special Topic 14

Speaker: Ms Yu YANG Yuzhen (高能所)

Slides 20180202-yuzhen.pdf

19 Minutes

Speaker: 素玉 肖 (高能所)

Maoqiang:

1. why use E/p to identify particle.

    Maybe Yuzhen could give the answer in the following Journal Club.

2. why can we add bremsstrahlung photon candidates found within a cone of 100mrad?

    To salvage lepton pairs.

 

Yuzhen:

1. why don't we set the size of crystal smaller than 5.2*5.2-6.4*6.4?

    To ensure EMC crystal could absorb all energy .

2. how can PD get information?

    Photon getting into crystal can be go directly or be reflected to PD.

 

20 JC 52

Speaker: 素玉 肖 (高能所)

Slides Search_for_Production_of_Invisible_Final_States_in_Single-Photon_Decays_of_ipsilon(1S).pdf

Friday, 9 February

21 Journal Club 52

Speaker: 素玉 肖 (高能所)

Slides 20180209.pdf

22 Special Topic 15

Speaker: Ryuta Kiuchi

Slides 20180209RK.pdf

23 Minutes

Speaker: Tao Yang (The Institute of High Energy Physics of the Chinese)

Xin:
1.Suyu , What is the specific meanning of word "telltale"？
2.why separate two energy region in fig.2 and fig.3？

YuZhen:
1.Ryuta,is FPGA a kind of ASIC？or What is the specific difference between them？

24 JC 53

Speaker: Tao Yang (The Institute of High Energy Physics of the Chinese)

Paper A-grazing-angle-technique-to-me_2011_Nuclear-Instruments-and-Methods-in-Phys.pdf

Friday, 23 February

25 Journal Club 53

Speaker: Tao Yang (The Institute of High Energy Physics of the Chinese)

Slides 2-23.pdf

26 Special Topic 16

Speaker: 茂强 荆 (南华大学)

Slides 2018-02-23-Jingmq.pdf

27 Minutes

Speaker: Mr Kai Liu (Tsinghua University)

28 JC 54

Speaker: Mr Kai Liu (Tsinghua University)

Slides 04382859.pdf

Friday, 2 March

29 Journal Club 54

Speaker: Mr Kai Liu (Tsinghua University)

Slides triggerbigpicture.pdf

30 Special Topic 17

Speaker: Tao Yang (The Institute of High Energy Physics of the Chinese)

Slides tao.pdf

31 Minutes

Speaker: Suyu XIAO (IHEP)

1. What's the merit of FET compared with transistor?

FET is powered by E field, transistor by real current. So transistor needs more power. And FET can be produced in smaller size.

2. Can we simulate MOSFET under bias?

It doesn't mean too much. But we can do it if necessary.

 

1. What causes beam loss?

One is for bunch out of control crashing into beampipe; the other is for particles in beampipe(but they don't make vacuum out of range) crashing with e+e-.

2. LHC interval is: 25ns(40MHz).

32 JC 55

Speaker: Suyu XIAO (IHEP)

Slides Introduction_to_BESIII_EMC_sub-trigger_system.pdf

Friday, 9 March

Paper 55

Convener: Suyu XIAO (IHEP)

slides 20170309.pdf

Special Topic 18

Convener: 茂强 荆 (南华大学)

slides 2018-03-09-Jingmq.pdf

Minutes

Convener: 茂强 荆 (南华大学)

slides Journal_Club_minute.pdf

Paper 56

Convener: 茂强 荆 (南华大学)

slides etaJpsi_v6.pdf

Friday, 23 March

Paper 56

Convener: 茂强 荆 (南华大学)

slides 2018-03-23-Jingmq.pdf

Special Topic 19

Convener: Ms Suyu XIAO (IHEP)

slides 20170323.pdf

Minutes

Convener: Tao Yang (The Institute of High Energy Physics of the Chinese)

1.Xin : What is the Born-order Cross Section?

Answer：the term usually refers to the calculated cross section at lowest order in perturbation theory.

2.Hao : what are 3C and 4C fit? Why the peak from 4C is a little lower than that from 3C?

Xin answer ：3C->momentum; 4C->momentum+energy. Mass of 4C fit is lowered due to the inclusion of one low energy fake photon but 3C fit is not affected.

3.Xin's suggestion to suyu : develop the slides (or pdf version ) for new commer in the future. 

 

Paper 57

Convener: Tao Yang (The Institute of High Energy Physics of the Chinese)

paper 1-s2.0-S016890021730791X-main.pdf

Friday, 30 March

33 JC 57

Speaker: Tao Yang (The Institute of High Energy Physics of the Chinese)

Slides jc-57.pdf

34 Special Topic

Speaker: Ryuta Kiuchi

Slides 20180330RK.pdf

35 Minutes

Speaker: Lingteng Kong (University of Chinese Academy of Sciences)

Slides jc_minute.txt

36 Paper 58

Speaker: Lingteng Kong (University of Chinese Academy of Sciences)

Paper JC58_RD_path_for_Pixel.pdf

Sunday, 8 April

JC 58: Journal Club 58

Convener: Ms Suyu XIAO (IHEP)

37 JC 58

Speaker: Lingteng Kong (University of Chinese Academy of Sciences)

Slides jc_2018.4.8.pdf

38 Special Topic 21

Speaker: Tao Yang (The Institute of High Energy Physics of the Chinese)

Slides sp.pdf

39 Minutes

Speaker: Ryuta Kiuchi

Q.  What is the meaning of zero suppression ?

A. A hit judgement to pass only "hit" pixels. 
This is usefull or essentil method when the number of units pixels 
are too large to send all of their information.

Q. There is sentece of "In the future, for thin oxides gate leakage and 
voltage swing become a concern, ...." and what does it mean ?

A. Not clear, but maybe increasing of tunnnel effect by thinning the gate,
or reducing of insulation by reducing the thickness.

 

40 Paper 59

Speaker: Ryuta Kiuchi

Slides PoS(VERTEX2015)037.pdf

Friday, 13 April

Journal Club 59

Convener: Ms Suyu XIAO (IHEP)

41 JC 59

Speaker: Ryuta Kiuchi

Slides 20180413RK.pdf

42 Special Topic 22

Speaker: Mr Kai Liu (Tsinghua University)

Slides gc.pdf

43 Minutes

Speaker: 浩 曾 (武汉大学)

Slides minute.txt

44 JC 60

Speaker: 浩 曾 (武汉大学)

Slides MykytaHaranko.pdf

Friday, 20 April

Journal Club 60

Convener: Ms Suyu XIAO (IHEP)

45 JC 60

Speaker: 浩 曾 (武汉大学)

Slides TCT_measurement.pdf

46 Special Topic 23

Speaker: Lingteng Kong (University of Chinese Academy of Sciences)

Slides st_4.20.pdf

47 Minutes

Speaker: Ms Suyu XIAO (IHEP)

Ryuta: Is muon detector designed to be a linear detector in future?

Lingteng: Not a linear detector, but a circular detector. Because the lifetime of muon can be longer due to the relativistic effect.

 

A comment from Ryuta: Because of the fluctuation in time, we usually wait 3 hours to measure.

Suyu: Considering the energy of infra-red and red laser is really low, why do they use these two to study? And lower energy beam can only produce few electron-hole pairs, reaching longer distence in material. High energy beam such as violet laser can produce much more electron-hole pairs, stucking on the surface. If so, photons with high energy cannot go through the vertex detector. But in reality, we do want the photons with high energy can produce some information in EMC. So maybe I misunderstand something.

48 Paper 61

Speaker: Mr Kai Liu (Tsinghua University)

Slides PhysRevLett.116.251802.pdf

Friday, 27 April

Journal Club 61

Convener: Ms Suyu XIAO (IHEP)

49 JC 61

Speakers: Mr Kai Liu (Tsinghua University) , 凯 刘 (Tsinghua University)

Slides jc.pdf

50 Special Topic 24

Speaker: 浩 曾 (武汉大学)

Slides Signal_Development_in_Silicon_Strip_Sensors.pdf

51 Minutes

Speaker: 茂强 荆 (南华大学)

Slides minutes-2018-04-27.txt

52 Paper 62

Speaker: 茂强 荆 (南华大学)

Slides Proceedings_of_WANG_Weiping_for_FAIRNESS2017.pdf

Friday, 4 May

Journal Club 62

Convener: Ms Suyu XIAO (IHEP)

53 JC 62

Speaker: 茂强 荆 (南华大学)

Slides 2018-05-04-Jingmq.pdf

54 Special Topic 25

Speaker: Mr Kai Liu (Tsinghua University)

Slides jc5.pdf

55 Minutes

Speaker: Ms Suyu XIAO (IHEP)

1. What's the physical meaning of alpha_lamda_c?

It's a shape parameter.

2. Ryuta: In the Figure 1, there are 4 red points from BESIII data, and the point at 4574.5 (most left one) shows bigger uncertainty in X-axis (sqrt(s)) direction, compared with the center two (4580.0, 4590.0) though the luminosity is much higher. Is there any specific reason for that ?

For Y-axis, sys. uncertainty contributes much. But for X-axis, we cannot know it well.

3. Xin: On page 5, it says “For signal events, Umiss is expected to peak around zero.” Could you explain why?

Because of the mass of neutrino 0.

56 Paper 63

Speaker: Ms Suyu XIAO (IHEP)

Slides combined_estimation.pdf

Friday, 11 May

Journal Club 63

Convener: Ms Suyu XIAO (IHEP)

57 JC 63

Speaker: Ms Suyu XIAO (IHEP)

Slides 20170510.pdf

58 Special Topic 26

Speaker: Ryuta Kiuchi

Slides 20180511RK.pdf

59 Minutes

Speaker: Ryuta Kiuchi

Q. What does the toy Monte Carlo mean ?
A. MC with toy models which has simple (or in other words, only mechanism) form,
and sometimes covers the wider parameter spaces than the reality. 

Q. What is the role of the PMOS in the APS ?
It might be that the circuit including only NMOS can be also called as CMOS,
as if it utilizes the PMOS. 

 

60 Paper 64

Speaker: Ryuta Kiuchi

Slides SOI_for_ILC.pdf

Wednesday, 16 May

Journal Club 64

Convener: Ms Suyu XIAO (IHEP)

61 JC 64

Speaker: Ryuta Kiuchi

Slides 20180518_JC64.pdf

62 Special Topic 27

Speaker: Ms Suyu XIAO (IHEP)

Slides 20170518.pdf

63 Minutes

------ by Suyu

 

Q： For the requirements for ILC vertex detector, time resolution to identify a single bunch crossing every 554ns for
1300 bunches. Is 554ns the time interval of train or bunch?
A: Bunch.

Q: Is the S/N to every pixel or cluster?
A: Pixel. Pixel with S/N > 64 as a seed.

 

Q: This work is done on CLEO-c. So they have single gamma trigger?
A: They didnot choose events by single gamma, but pi+pi-gam.

Q: Can we give a upper limit distribution for J/psi->invisible?
A: I don't think we can. Because energy of invisible in this case is in a range(energy of gam is in a range), for our
J/psi->invisible, the invariant mass of invisible is a certain value. We can only give a value for upper limit.
But for Chic's case, maybe we can try to give an upper limit distribution.

 

64 Paper 65

Speaker: Mr Kai Liu (Tsinghua University)

Slides 1805.05613.pdf