1 / 12

Trigger System Status

Trigger System Status. Adele Di Cicco. T600 pixel definition. 28.8 cm. 86.4 cm. 9.6 cm. Trigger System. Adele Di Cicco Napoli 4 Febbraio 2004. LTCU. Main technical specification. Trigger definitions. TCU gives Global trigger when a MAJORITY condition is met in PMT logic.

landis
Download Presentation

Trigger System Status

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Trigger System Status Adele Di Cicco

  2. T600 pixel definition 28.8 cm 86.4 cm 9.6 cm

  3. Trigger System Adele Di CiccoNapoli 4 Febbraio 2004

  4. LTCU

  5. Main technical specification

  6. Trigger definitions TCU gives Global trigger when a MAJORITY condition is met in • PMT logic. • AWS logic. TCU gives Local Triggeraccording to data recorded during drift time.

  7. GLOBAL/LOCAL trigger BUSY logic • After a trigger request TS gives the DRIFT signal to all v789 boards • During a DRIFT, TCU doesn’t accept any other trigger request and decides globality/locality of event. • After the DRIFT time, TS according to topology of event gives global trigger to all crate or local trigger to fired crates . • during a GLOBAL_BUSY (DAQ dead time for acquisition data download from all chambers) it accepts only a Local Trigger request

  8. Flow Chart PMT AWS LTCU - PMT AWS - LTCU Discriminator Discriminator PMT Trigger condition logic Wire planes coincidence Logic (pixel fired) No Trigger request PMT local trigger request? Global trigger request Local trigger request PMT-pixels coincidences logic TCU Pixels Majority/Pattern logic Global drift or busy? Local drift or busy? Acquire only fired pixels No trigger Acquire all crates TS

  9. General Idea on Partial majority Rack 13 Rack 11 • Each 100 msTCU makespictures of detector • Window runs on the detector • Majority condition is checked for each window • If majority condition (>1) is verified,horizontal scanning will start.

  10. Freeze detector It Sums pixels in the stripe and it stores pixels in shift register It Sums two adjacent stripes Majority Condition is verified? end ACC=0 Start horizontal scanning It sums two adjacent pixels end ACC equal Total pix Sum equal 0? ACC=0 ACC=ACC+RowSum Spot detection

  11. PIPELINE CLK ADDR[4:0] ADDRESS GENERATOR FLASH 9 A0_B[4:0] AND BLK INA SYNC BLK AA A1_B[5:1] MASK A2_B[6:2] 9 9 A3_B[7:3] ENC REG A A4_B[8:4] FLASH 13 A5_B[9:5] MASK A6_B[10:6] SYNC BLK BB A7_B[11:7] REG B INB A8_B[12:8] 1 13 13 PISO BLK 5 ACC SUM REG 5 Central Unit

  12. Status of all system • LTCU prototype is finished and tested in the SER • Tests on DAQare going on these days (Pietro,Paolo,Adele). • The board’s documentation has been done (Adele,Maurizio). • Test will be finished at the end of February • Test at the CERN will be start on beginning of March (Adele) • TCU block scheme definition is in progress • New scheme can be proposed

More Related