A Trigger/Timing Logic Unit (TLU) for AIDA-Innova

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 101004761. Advancement and Innovation for Detectors at Accelerators A Trigger/Timing Logic Unit (TLU) for AIDA-Innova David Cussans BTTB12, April 2024 Outline ⚫What is a TLU? ⚫(Why do I need one?) ⚫What exists now ⚫(What are all those blue boxes?) ⚫Why it needs to be improved ⚫(Why do I need a new blue box) ⚫Implementation ⚫(Front end , back end). A Digression ⚫Without Particles …. ⚫Particle Physics is Philosophy, not Physics By user:shakko - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=5535206 Greek Philosopher Democritus c. 460-370 BCE The universe is made of particles and the void A Digression ⚫Developing detectors is at the heart of Particle Physics. ⚫“It was as if, suddenly, we had broken into a walled orchard, where protected trees had flourished and all kinds of exotic fruits had ripened in great profusion.” ⚫Cecil Powell, 1950 Nobel Prize for “Emulsion Technique” of particle detection. e Back to the TLU ⚫… Returning to the AIDA-Innova TLU ⚫Aiming to make Beam Tests Better. Why a TLU? ⚫May have entirely selfcontained system. ⚫In which case all you need is the beam. ⚫But often want to use existing beamline infrastructure. Why a TLU? ⚫May want a signal to trigger read-out of detector ⚫In which case you need a beam trigger ⚫Can be helpful to have preinstalled scintillators etc. ⚫And trigger logic (AND, OR, VETO, etc.) Why a TLU? ⚫May want to know where each particle hit your detector ⚫In which case you need a beam telescope ⚫Need a way of matching tracks in telescope with hits in your detector ⚫→ Hardware correlation through TLU Why a TLU? ⚫May want particle ID ⚫In which case you need beam instrumentation (e.g. Cherenkov detector) ⚫Want to tag events with PID information (e.g. p/pi/K from threshold Cherenkov) ⚫→ Hardware correlation through TLU This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. AIDA-2020 TLU Asynchronous Interface ⚫Asynchronous “EUDET mode” ⚫No common clock between TLU and DUT. ⚫Trigger/Busy handshake ⚫(Trigger is only released when DUT acknowledges) This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. AIDA-2020 TLU Asynchronous Interface ⚫Asynchronous “EUDET mode” ⚫No common clock between TLU and DUT. ⚫Trigger/Busy handshake (configurable) ⚫DUT can clock out trigger number from TLU ⚫Output on trigger line ⚫Provides event-by-event cross-check This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. Trigger Logic ⚫Inputs clocked at 160MHz (nominal) ⚫Input signals can be delayed and/or stretched in units of 1/160MHz ⚫Signals from the 6 inputs fed into a look-up table ⚫Trigger output synchronized to clock fed to DUT (40MHz nominal) ⚫State of all inputs recorded at point that trigger “fires” −Can be used to tag events – e.g. Cherenkov information. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. Documentation ⚫https://doi.org/10.1088/1748-0221/14/09/p09019 “The AIDA-2020 TLU: a flexible trigger logic unit for test beam facilities” , JINST ⚫Open Hardware project “AIDA-2020 TLU” −https://ohwr.org/project/fmc-mtlu −Hardware design files https://ohwr.org/project/fmc-mtlu-hw/ −Firmware source code https://ohwr.org/project/fmc-mtlu-fw/ ⚫User manual https://ohwr.org/project/fmcmtlu/blob/master/Documentation/Main_TLU.pdf This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. Firmware ⚫Control and readout of time-stamps with UDP/IP 1 Gbit/s Ethernet −IPBus: https://ipbus.web.cern.ch/ ⚫Ipbb build system −Scriptable build. Working on CI ⚫Open Source −https://ohwr.org/project/fmc-mtlu-fw/ This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. Software ⚫All versions of TLU integrated with EUDAQ DAQ software. −Run control ⚫Configuration ⚫Monitoring −Readout of trigger timestamps −https://eudaq.github.io/ This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 654168. Existing - AIDA-2020 ⚫Current production version ⚫6 trigger inputs ⚫4 DUT connections −LVDS on HDMI ⚫But direction of each line can be swapped in hardware to allow different firmware mapping ⚫Low jitter clock ⚫Hardware permits optical distribution of clock/trigger ⚫In small desktop case or rackmount case Why a New TLU? ⚫Increasing need for more precise timing ⚫(AIDA-2020 TLU has ~ 1ns time-stamping accuracy) ⚫User requests for more trigger inputs ⚫(Number of DUT interfaces can be increased in common clock mode using external fanout – up to 30 DUTs) ⚫A “PicoSecond TLU” being developed as part of the AIDAInnova programme. Picosecond TLU ⚫Timing specification: −Clock jitter < 10ps RMS −Timing-stamping of input signals O(10ps) RMS ⚫Backwards compatible with AIDA-2020 TLU −Same signals on DUT connections ⚫trigger/busy/DUT-clk in EUDET-mode ⚫Global-clk, trigger, busy, shutter, T0 in common-clock mode AIDA-2020 TLU connected to beam telescope Picosecond TLU - I/O ⚫Trigger inputs −Probably 8 ⚫(c.f. 6 for AIDA-2020 TLU) −ADC for time-walk correction ⚫(c.f. threshold discriminator in AIDA-2020 TLU) −TDC with O(10ps) bins ⚫Either implemented in FPGA or external PicoTDC (3ps bins) −Aim to contribute less to timing uncertainly than detector. Trigger Inputs Level Comparator (same as AIDA TLU) Trigger Inputs Variable Gain Trigger Inputs Pulse Comparator Trigger Inputs ADC for Time-Walk Correction Trigger Inputs Rising Edge Pulse Stretching Trigger Inputs Falling Edge Pulse Stretching Trigger Inputs TDC AIDA-Innova TLU Schedule ⚫Test board for trigger inputs being produced ⚫Ready June ‘24 ⚫Will be tested with MCP-PMT ⚫Prototype of full hardware ~ October ⚫Initial firmware and integration ~ Jan ‘25 Summary ⚫The AIDA(-2020/Innova) TLU provides a common hardware and software interface to beamlines ⚫AIDA-Innova TLU backwards compatible at the hardware signal level with EUDET / AIDA-2020 / AIDA TLU ⚫Data format different – will be “hidden” by EUDAQ ⚫Pico-second detectors need pico-second infrastructure ⚫Aiming for < 100ps timing Backup