Welcome to the LHCb Upgrade Silicon Tracker page

This twiki collects information about the LHCb upgrade silicon TT and upgrade silicon IT

UT (TT Upgrade)

The information in this section has been moved/reorganized below


SVN repository

Outline and editors (last update 2014.01.07)

Section Editors Num. pages
UT   57
Experience from TT Steinkamp 3
Requirements Stone 5
Geometry Wang 3
Sensor Artuso,Steinkamp 3
SALT ASIC Idzik, Szumlak 6
Electronics Jawahery 8
UT DAQ integration Saornil 4
Mechanics Mountain 8
Cooling Neri 4
Integration and testing Blusk, Skwarnicki 6
Project organization Artuso, Stone 6

Documents for framework TDR

For reference and "inspiration":

R&D towards TDR Project management, cost and technical issues

Project Organization

Software for TT Upgrade

  • This is a repository of useful information for code development to optimize the UT detector use in the tracking software.
  • script_performanceStudy.tar.gz: Set of scripts for performance studies, and optimization studies






Useful documentation

Power Supply

A set of useful document is linked here, Daniel's thesis is essentially a very useful manual to the HV and LV of the TT


TFC commands

Our SOL40 boards will transmit 8 TFC information bits repeated 8 or 10 times in each SOL40 GBT frame:

  • FE reset
  • BXID reset
  • BX Veto OR Header Only : Single signal as the ASIC needs to perform the same way for both.
  • NZS
  • Calibration
  • Synch
  • Snapshot
  • Extra bit : We can have a second calibration bit, or the LSB of the BXID
For each GBT master 8 or 10 eLinks at 320Mbps will send the data to the FE. Each eLink contains all the necessary TFC information.


Most of the detector monitoring and configuration will be done using the SOL40 boards with GBT-SCA chips. The exceptions are:

  • HV PS : OPC server
  • LV PS : OPC server
  • Cooling : TBD
  • TELL40 : CCPC server
The main SCA interfaces are:

  • SALT I2C
  • Data GBTx I2C
  • Temperature and humidity sensors ADC
  • LV regulators ADC
  • GPIO for LV regulators inhibit
  • JTAG for FPGA (if present)

  • SALT : Status registers (LDO, DLL, PLL, ADC, DSP, Buffer, SEU, etc.), TFC counters
  • data GBTs status
  • Hybrid temperature sensors
  • Box humidity sensors
  • Balcony electronics temperature
  • Master GBTx status
  • LV regulators output voltage
  • HV PS current and voltage
  • LV PS current and voltage
  • Cooling temperature
  • TELL40 status

Detector Safety System

PLC sensors will have to be deployed around the detector:

  • Box temperature and humidity
  • Balcony electronics temperature
  • Cooling
  • HV interlock
  • Smoke detection
  • Water leak detection
  • Gas flow in the box
  • If we plan to cool the Balcony electronics with air, we need to know if the air is flowing or not.
Failure or alarm in those sensors should trigger either an alarm to the expert on call and a power cut when there is immediate danger for the electronics. The smoke detection should also trigger an alarm to the fire brigade.


  • Mechanical requirements document for UT here (R. Mountain, et al., v2, rev.5/6/2013), updated here (v3, 10/7/2013).

  • Beam pipe interface design studies and tests: talk1 (Kaan Vatansever, LHCb Upgrade Silicon Tracker meeting, 5-dec-2012), EDMS report.


gathering the edms documents concerning the cooling plants...

Irradiation Plans

This section includes talks and material about irradiation plans of SALT, sensors, etc...

Test Beam

ASIC functionality test, Flex cable test and electronics slice test

Integration and Testing

Costs and Schedule

Picture of the current TT

IT Upgrade


Silicon modules R&D: Simulation:
Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatods ECS_TFC_numerology.ods r2 r1 manage 30.0 K 2014-02-04 - 12:01 SandraSaornil Number related to ECS and TFC
Texttxt InstructionsOnHowToRunWithModFieldandNoRICH1.txt r5 r4 r3 r2 r1 manage 1.3 K 2013-03-19 - 18:02 StevenBlusk  
PDFpdf TT-cost-rev1.pdf r1 manage 42.6 K 2012-04-09 - 16:47 MarinaArtuso breakdown of 4 plane upgrade TT cost
PDFpdf TTinspection_12Aug2013.pdf r1 manage 25731.5 K 2013-11-14 - 21:27 PaoloGandini  
PDFpdf UT_MECH_REQUIREMENTS_DOCUMENT_v2.pdf r2 r1 manage 1986.7 K 2013-05-06 - 23:15 RayMountain mechanical requirements doc for UT
PDFpdf UT_MECH_REQUIREMENTS_DOCUMENT_v3b.pdf r1 manage 909.7 K 2013-10-09 - 00:21 RayMountain updated mechanical requirements doc for UT
Unknown file formatxlsx UT_numbers.xlsx r1 manage 87.9 K 2013-09-30 - 18:04 JianchunWang Numerology of UT
Unknown file formatxlsx UT_numbers_rev2.xlsx r1 manage 91.4 K 2013-11-08 - 21:18 JianchunWang This is with revised electronics performance and a few other changes
Unknown file formatxlsx UT_numbers_rev3.xlsx r1 manage 167.8 K 2013-12-17 - 18:21 JianchunWang After revision of event format and higher luminosity
Unknown file formatxlsx UT_numbers_rev4.xlsx r1 manage 169.8 K 2014-01-10 - 19:43 JianchunWang Add GBTx count and comments
Unknown file formatxlsx UT_numbers_rev5.xlsx r1 manage 103.8 K 2014-04-05 - 01:28 JianchunWang Update to corporate with new FPGA on AMC40
Unknown file formatxlsx UT_numbers_rev6.xlsx r1 manage 112.5 K 2015-01-16 - 04:45 JianchunWang Update of data format for TELL40 firmware optimization
PDFpdf st_common_chip_specs_v3.pdf r1 manage 74.6 K 2012-02-08 - 22:15 MarinaArtuso  
PDFpdf st_common_chip_specs_v4.pdf r1 manage 88.0 K 2012-06-14 - 11:21 MarinaArtuso new version of the TT electronics specifications, requirement on on chip regulator added
PDFpdf tt-design-evolution.pdf r1 manage 23.4 K 2012-04-09 - 17:00 MarinaArtuso draft of TT note
Unknown file formatxlsx tt-upgrade-cost-ma.xlsx r1 manage 47.4 K 2012-04-09 - 16:56 MarinaArtuso excel sheet documenting cost estimate
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Topic revision: r62 - 2015-01-23 - SheldonStone
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