clock and trigger distribution for na62
DESCRIPTION
Clock and Trigger Distribution for NA62. Mari á n Krivda, Cristina Lazzeroni University of Birmingham, UK. Summary of LTU production and tests. 20 LTU boards are available 19 boards o.k. 1 board has a wire patch -> use it only in lab !. LTU firmware ver.6. Temp (temperature on board) - PowerPoint PPT PresentationTRANSCRIPT
Clock and Trigger Distribution for NA62
Marián Krivda, Cristina LazzeroniUniversity of Birmingham, UK
14/12/2011 1
Summary of LTU production and tests
• 20 LTU boards are available– 19 boards o.k.– 1 board has a wire
patch -> use it only in lab !
14/12/2011 2
LTU firmware ver.6
14/12/2011 3
• Temp (temperature on board)• BUSY (choke/error - enable/disable)• TTCvi (coding and serialization for TTC ch. B)• VME FIFO• Short, long broadcast option (only from VME FIFO) • L0 processor Emulator • Start signal (RND, BC, Pulser edge/level, Soft
trigger)• Counters
Test setup I.
LTU(emulates trigger seq’s) TTCex (feeds optical link) TTCit (monitors optical link)
VME processor LTU TTCex TTCit 14/12/2011 4
Data bits
Hamming bits
Strobed data
B-channel short broadcast test
8 bit data data[0] and data[1] have special meaningeffectively only data[7:2] can be used for the message
Test: data messages set by LTU softwareLTU-->TTCex --> TTCit
14/12/2011 5
Test setup II.
• Installation of new VME processor VP717 and VME RCC driver -> successful• Test for more LTUs in one VME crate (15 LTUs !!!) -> successful
14/12/2011 6
TTCex II (ver.2)
14/12/2011 7
• After extensive tests, TTC group (PH-ESE) has found a component (PLL) which hasn`t constant delay after power-up.
• PH-ESE will change PLL for different type and redo TTCex boards
• Solution:- now: 5 TTCex (any kind) + 1 TTCex (mark I) or good-
quality mark II)- for 2012 runs (not later than April 2012): 2 TTCex
(mark I) + 3 TTCex (mark I or good-quality mark II)
14/12/2011 8
TTC network – final version
Optical splitters
14/12/2011 9
• After a negotiations with INFRACTIVE we got a better price:– 1:4 -> 145 EUR– 1:8 -> 165 EUR– 1:16 -> 225 EUR
• They use cheaper metal box• Offer is valid only 1 month, so
WE NEED TO ORDER THEM SOON IF WE WANT A GOOD PRICE
Next plans
14/12/2011 10
• Implement SSM functionality (firmware)• Implement a timing synchronization(software), RC circuit is on
the board:• LTU -> TTCex• L0processor -> LTU
Summary• We have 20 LTU boards and ??? TTCex boards• 6 LTUs are ready for distribution – now (request from
Marco Sozzi)• Other LTUs can be picked-up at 53-R-008, but please
send me email before coming• TTC network is defined• Optical splitters order (???)• We have 3 TTCit boards for NA62 -> necessary to test
them
14/12/2011 11