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Full Chain Tests. A report on the Full Chain Tests recently performed at LNF Starring: Walter R., Valerio, Sandro C., Rafael, Alessandro B., Adriano. The place. A large experimental hall (2x3 m 2 ) with all possible comforts. Some facilities:. Happy operators. Off-the-shelf components.
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Full Chain Tests Adriano Lai A report on the Full Chain Tests recently performed at LNF Starring: Walter R., Valerio, Sandro C., Rafael, Alessandro B., Adriano
The place Adriano Lai A large experimental hall (2x3 m2) with all possible comforts Some facilities: Happy operators Off-the-shelf components Spare monitors Spectators’ chairs (for guided tours) Automated wheeled table Lumber room
Test components and setup Adriano Lai Pattern generator Input to the chain were given either by a Pattern Generator (12 channels) or via the “pattern facility” inside DIALOG When given by the PG the other channels were masked inside DIALOG 12 channels TTL-LVDS board DIALOG KVASER board DIALOG DIALOG 32 channels DIALOG NI interface ODE BP PWR SB PC (console) TB D-Router x4 IB 8 channels CLKgen Scope Opt-Rx 3 channels TB TTCvi NIM LVDS-NIM ODE TTCvx Power Supply NI interface VME
Step 1 Adriano Lai • 4 DIALOG on the same branch (same ELMB), • 1 SB (out crate) • 4 DIALOG on the same branch, 1 SB (in crate) • 4 DIALOG in 2 different branches • Cables of very different lengths (from few cm to 15 m) • Tested using programmable patterns on DIALOG • Unused inputs may cause noise on outputs … Test program accessing DIALOG via KVASER and SB
Step 2 Adriano Lai • TB and IB • 4 DIALOG 8 outputs each (32 channels to IB) • OR2 on DIALOG • OR4 on IB (M2R3 style – “worm” order!) channels 0,1 … 7 • 8 outputs from IB (3 out of seen on the scope) ORs (pulses on different DIALOG outputs are delayed by 25 ns one with respect to the other) Time Re-aligned ORs (by DIALOG) Time Re-aligned and shaped ORs (by DIALOG)
Note Adriano Lai TB connectors M2R3 The “OR-ing”scheme in the IB is not trivial … By the way: Do you know that DIALOG can make OR ONLY starting from corresponding CARIOCA channels ?? 0 – 0 1 – 1 2 – 2 … 7 – 7 (see 1st DIALOG note, since 2001, and further releases …) We hope you know …
Step 3 Adriano Lai • ODE (and its TB) inserted (7 SYNC-b plugged on) • 8 IB outputs were given to the ODE • The inputs were moved among different ODE (SYNC) inputs and • the relevant channel histograms (inside SYNC) read back • directly by the internal ELMB
Step 4 Adriano Lai • The OptRx board is inserted in the chain • Data written on the L0 derandomizer (random trigger) are read • by the ODE controller and sent to the OptRx via the optical link • Data are read from the OptRx interface and visualized (correctly) • on the PC screen • A few combinations were tested
Conclusions and Plans Adriano Lai • The chain test went reasonably well • All the prototypes and the all the one-to-one modules’ connections were already deeply tested so: • Time was spent more to cure minor “linking” setup problems than debugging conceptually the system • Further steps: • test of the L0 trigger transmission (we need a simple trigger emulator or a better PG) • test the ODE in its full equipped setup (24 SYNC on the board) • Load the crates with a higher number of boards to test if problems on the back-plane arise • Insert the FE boards on the chain or even a complete chamber (without gas at the beginning) • test the L0 trigger receiver (Marseille) • test with chamber and cosmic rays • This tests have to be concluded by next June • We need a safe (and large enough) place to install “permanently” the chain. • The larger efforts are in setting-up all the connections every time we start a new test. • The installed chain have to be constantly available to add and test new pieces of the system. • The possibility of a remote connection would be opportune. • Cannot LNF find a better logistic solution (in short time) ? • Should we look for another place ?