ATLAS?????????????????????????

1
ATLAS?????????????????????????

• ???????????(D3)
• ?? ?

LHC Project
CMS
ALICE
ATLAS Detector
LHC-B
ATLAS
????????? ????????????????? --????????? 2005?5?11
?
2
Physics potential at LHC

• Higgs, SUSY?????????1TeV?????????????????????????
  ?
• t, b?W/Z??????????(??????)

Event rate at low luminosity (1033/cm2/s)
Higgs discovery sensitivity
5 sigma
100 GeV
1 TeV
3
ATLAS Detector

• ???????
• ??????? 14TeV
• Luminosity 1034/cm2/s (at high lumi.)
• ?????????
• 40MHz (25ns)
• 20 Interactions/bunch(min. bias)

????????????????? ????????????????????? (Level-1
Trigger40MHz ?75kHz)
H ? ??

• Inner Tracker
• Calorimeter(EM, Hadron)
• Muon Spectrometer
• ???????
• Thin Gap Chamber(TGC) ????????
• Resistive Plate Chamber(RPC) ????
• ?????
• Monitored Drift Tube(MDT)

ATLAS Detector
Event Display without pile-up (at high lumi.)
Event Display with pile-up (at high lumi.)
4
ATLAS Trigger System
3??? Trigger Selection Trigger???
?????????? (Trigger) (Readout)
ATLAS Trigger System

• Level-1 Trigger
• ????????(40MHz)?????Pipeline???
• ???????(Muon, Calo.)?????????????????75kHz?????
  (max100kHz)
• Bunch ID ????
• ??Latency2µs
• ??????????????Pipeline Memory ????????? Readout
• Level-2 Trigger
• Level-1 Trigger ??????RoI???????(RoI Mechanism)
• Event Filter
• Computer Farm ?????

75kHz?
5
Thin Gap Chamber(TGC)
Pick-up strip ???? ?????????
???(T7 type)
???
17 41
1365
1245
??mm

• ????
• wire potential 3.1kV
• gas mixture CO2-n-pentane(5545)
• gas amplification 106
• ???????
• time jitter ? 25ns
• efficiency gt 99
• rate capability gt 100Hz/cm2
• long term stability 10 years

1200
????
9 57
2????????
??????????
6
TGC Trigger System
R
??

• ??????????finding
• ?????????(pT)??

3???????????(M1, M2, M3)
On-Detector Electronics
????????? (????M3????) ?????????

• ?? 320,000 channels ???
• ???????????????????????????????????????On-Detector
  (????) ???????(channel ????????!)
• ???????????????????????????(100m)????

• Low-pT ??
• M2???????(R, f)
• High-pT??
• M1???????(R, f)
• R-f??

7
TGC Electronics
3?????? (1)Trigger Level-1 ???????????? ??
(40MHz??pipeline ??) (2)Readout Level-1
?????????? ???????? (??75kHz) (3)Control ?????????
??????? ?? (slow control)
PS Board


ASD
????? (?????)
??? ???
????(100m)
SL
ROD
HPT
SSW
HSC
PS Board

• ????ASD(Amp.-Shaper-Discri.), PP(Patch Panel
  ?????????)?????????(????)???

CCI
8
?????????????????
???? ?? ??
????IC(74??????) ?????? ???????? ?????????????????????? ??????????????????????????????? ?????????????????
Complex Programmable Logic Device (CPLD) ????? ?-??????????(VME, CAMAC????????????????????) ????(latency???) ????????? ????????????????? FPGA???????? ????Flash/EPROM(configuration memory)???????????????????
Field Programmable Gate Array(FPGA) ASIC???????????????????????????? CPLD???????????? ????????? ????????????????????????(??Flash/EPROM??) ?????????????CPLD/ASIC???????????
Application Specific IC(ASIC) ??????????? ????????????????????????????? IO?????????????(???????(TTL/LVDS??)) ?????????????????????????????????? ???????????????????????????????? ?????????????
9
TGC????????????????

• TGC ??????????????????????10??
• 23.8krad (????????????)
• 5.6x1011 hadrons/cm2
• ????????????????
• (Safety Factor??)

??????
?????
?????????????? ?

• Single Event Effect (SEE) ?????????? ?
  5.6x1011 hadrons/cm2
• ??????????????(TGC?????????????????1???)
• FPGA/CPLD?configuration data(???????SRAM???)??????
  ??????????????
• Total Ionizing Doze(TID) ????????? ? 23.8krad
• ?????(???????????????)?
• ??????????????????(????????)
• CPLD??????? Flash/EPROM???????????????????????????
  ??????????????????

gtFPGA/CPLD??????!
10
?????????????????

???? ?? ??
????IC(74??????) ?????? ???????? ?????????????????????? ??????????????????????????????? ?????????????????
Complex Programmable Logic Device (CPLD) ????? ?-??????????(VME, CAMAC????????????????????) ????(latency???) ????????? ????????????????? FPGA???????? ????Flash/EPROM(configuration memory)???????????????????
Field Programmable Gate Array(FPGA) ASIC???????????????????????????? CPLD???????????? ????????? ????????????????????????(??Flash/EPROM??) ?????????????CPLD/ASIC???????????
Application Specific IC(ASIC) ??????????? ????????????????????????????? IO?????????????(???????(TTL/LVDS??)) ?????????????????????????????????? ???????????????????????????????? ?????????????
11
Anti-Fuse FPGA

• Anti-Fuse FPGA(Actel, QuickLogic)
• ?????? configuration memory ?????Open
  ???Anti-Fuse? Short?????????????(???????????????)?
  
• ??????????????FPGA?????????
• ?????????????????ASIC????SEU?????????????????????
  ?????(Voting Logic, TMR)???????????????

Anti-Fuse
12
???????
PS-Pack
HSC Crate
??????
?????
13
ASIC Development (SLB ASIC)

• 4???????
• Input (mask, delay??)
• JTAG(???????)
• Trigger(Low-pT?? 40MHz??)
• Readout(????? 75kHz????)
• ROHM ? 0.35mm CMOS
• ?????ASIC (3metal1poly)
• ????? 9.86mm x 9.86mm
• I/O ??? 256 (QFP)
• 800K?????
• ???????? 200K???
• ??? 600K??? (56kbit)
• 160bit???(405)bit???

14
SLB ASIC??????????

• ?????????????????(?????????????)????
• ?????gt??????????Flip-Flop????????(Setup/Hold)?????
  ???
• ??????????
• ????????
• ??fanout??????
• Etc...

15
?????gt?????????

• ?????????????????????????????
• ???????????????????????????????

???????D-Flip Flop ?????D-Flip
Flop?????????Master-Slave??????
clock
clock
????
????
data clock
data clock
setup hold
setup hold
16
???????

• ??Design Compiler (2000.05)?????????
• ?module ?????????D-Flip Flop ? clock ????clock
  ?????????2??????????????????
• ????Flip Flop ??????????????????????Clock Tree
  ????????????????????

• ??
• ???????30MHz????????????

clock tree??
17
Summary
TGC????????????

• ????????320,000ch????????????????????????????????
  ?????On-Detector(????) ??????
• ?????????????????latency?????(lt2ms)???????????????
  ??????
• On-detector???????????????????????????????????????
  ???FPGA/CPLD??????????????????????????

ASIC Development
ASIC ??????????????????????? Master-Slave
????????????????????ASIC??????????????? ??????????
??????????????????????Anti-Fuse?FPGA??????????
18
CMOS ASIC(Rohm 0.35 um)

• ?????? (TID, ??????)
• 50krad??????????????????
• VCO(PLL????? ??????????????????)??30krad?????????
  ???
• ???????????????????????????

23krad
23krad
VCO Voltage(V)
0 20 40 60 80
100 Absorbed Dose(krad)
0 20 40 60 80
100 Absorbed Dose(krad)