# Presentation: 604639

## L1 SciFi Trigger (CTT/CPS/FPS) Commissioning

- System overview
- status of components
- (Fred's) plans for installation
- software needs
- commissioning

- Was ist der Mensch, daß er Pläne macht !
-  Brief des Lord Chandos an Francis Bacon, Hugo von Hofmannsthal

- Trigger  Meeting

- June 21, 2000

## Overview SciFi & Preshower Trigger System

- Basic scheme:
- Analog front-end
- Mixer crate
- Digital front-end w/ controller
- Collector/Broadcaster system (octant/sextant/quadrant)
- Trigger Term (singlet) board
- (Muon) trigger manager
- Links:
- Internal all LVDS
- Serial copper (AMCC) for 80 sector links to muon
- Serial fiber (g-link) to L2, L3

- Trigger  Meeting

- June 21, 2000

## The Digital Board

- Digital Board daughtercards are application-dependent:
- Axial trigger (DFE)
- Collector ('octet')
- Concentrator ('singlet')
- Roman pot trigger

- DFE Daughtercard

- Trigger  Meeting

- June 21, 2000

## L1 SciFi  HW/FW status

- Hardware/firmware status:
- common DFE/COL/BRC/TT motherboard: prototype working.
- DFE daughtercard: prototype working.
- special 'datapump' I/O board: working with DFE.
- other daughtercards: firmware well advanced (except for STT broadcaster), but no hardware prototypes yet adapt firmware to DFE card for 'first chain' milestone ??? Probably not.
- Crates, backplanes & power supplies: prototype working; only one DFE type crate needed for 'first chain' milestone.
- Master clock interface: SCL-_AFE_-DFE  this part of AFE still needs to be tested.
- cables:
- SVX/Sequencer on hand (not needed for DFE-and-up chain).
- optical fibers on hand (L1-L3 and L1-L2 paths).
- LVDS: prototypes on hand; sufficient for 'first chain' test ?
- CTT-internal Hardware/firmware tests: for detailed description see notes by Fred; loopback tests with varying number of boards in loop; DFE-only test is implemented and running.

-    Ja, mach nur einen Plan
-     Sei nur ein grosses Licht!
-     Und mach dann noch'nen zweiten Plan
-     Gehn tun sie beide nicht
- Aus dem Lied von der Unzulaenglichkeit menschlichen Strebens, Dreigroschenoper, Bert Brecht

- Trigger  Meeting

- June 21, 2000

## L1 SciFi Trigger Installation 

- crates: as needed over the next few months:
- Platform: 7 DFE, 1 Mixer, 1 MTM (PC03, PC04, PC19, PC20, PW02, PW03).
- MCH: VRB crate; MTM L3 R/O crate
- power supplies: ditto; need to adapt some old muon PS.
-   boards: as they become available; usefulness of adapting other firmware to run on DFE daughtercard just for August 1 milestone questionable.
-   cables: bulk (long haul fiber optics, AFE-Sequencer) during next month, internal LVDS after crates are populated.

- Ein perfekter Plan, so perfekt, daß eine nichtige Komplikation genügte, um ihn platzen zu lassen.
- Wenn ein Reisender in einer Winternacht, Italo Calvino

- Trigger  Meeting

- June 21, 2000

## L1 SciFi  Trigger Software

- Und allen Plänen gegenüber begleitet mich die Frage: "Was soll der Unsinn?"
-     Eine Frage, die überhaupt  ganz und gar von mir Besitz zu nehmen droht.
-                                                                                                  Theodor Fontane

- Trigger  Meeting

- June 21, 2000

## L1 SciFi Trigger Commissioning 

- I was in a warm bed, and suddenly I'm part of a plan.
-   Shadows and Fog, Woody Allen

- Now until August: First Step(s): closed loops of various sizes; minimal needs beyond JTAG firmware download: datapump + PC control
- August: Minimal DØ-integrated solution for 'first chain' test: download and init DFE-type boards via JTAG; special firmware for DFE's to generate static trigger pattern;  need working Muon TriggerManager - Framework communication     we will share the existing MTM prototype with the Muon system.
- assuming that VRB software (download, control, R/O to buffer for Examine) can be 'borrowed' (adapted) from SciFi waveguide commissioning.
- Install production boards and enlarge system under test as boards become available.
- Mid-September: If sufficient (pre)production quantities of AFE's available: try to setup simple cosmic trigger ? Difficult without mixer crate. Probably SciFi cosmics for detector commissioning need to rely on Muon trigger.
- switch over to our own Trigger Manager crate.
- November: Cassette + AFE + Mixer systems complete: finish hookup, implement SciFi cosmic trigger with special DFE firmware.

- Trigger  Meeting

- June 21, 2000

## L1 SciFi Trigger Integration 

- Integration with Muon L1 and CTT L2:
- cables:
- 80 Muon sector cables: could go in early (July ?); preferred after DFE are in place.
- CTT/CPS/FPS L2: optical fibers; to be installed soon.
- protocols: are defined.
- Test pattern generation: with special DFE firmware.
- Test pattern verification: needs special software (Muon/L2) ?
- Cosmic running: ditto
- Integration with Trigger Framework:
- all upstream communication through Muon Trigger Manager ('plug and play' - Fred B.)
- SCL interface through AFE.
- Integration into Readout to L3:
- protocol/data patterns are specified.
- VRB control: hopefully not so different from other readout tasks.
- L3 unpacking: needs to be done.
- Monitoring: needs to be written.

- "Ihr werdet schon sehen, wenn ihr im Leben steht,
-     ohne Organisieren kommt ihr nicht weiter"
- Die gerettete Zunge, Elias Canetti

- Trigger  Meeting

- June 21, 2000