INFN wiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
======TIMING======
**Service to the user**
The user have a 2-channel arbitrary delay generator system {{:strutture:lnf:da:btf:dispositivi:dg535m.pdf|Stanford DG535m}}\\
remotely controlled in BTF control room with the respecive bypass in BTF Hall.
User customizable trigger signal (source LINAC SYS)
**{{:strutture:lnf:da:btf:dispositivi:dg535m.pdf|STANFORD Delay Generator DDG535m}}**

__BTF Setup Menu (**BSM**)__\\
-> **Go Forever** = lets the DAFNE injection rejected pulses (till the Odoscope one) to be delivered at set frequency to BTF\\
-> **Single Shot** = only one pulse delivered to BTF, after the DAFNE injection pulses\\
\\
__General Timing Status (**GTS**)__\\
-> **Normal** = cutoff trigger signal @ BTF (the DHPTB101 still works!!!)\\
-> **BTF** = gives trigger signal @ BTF and implements BTF status setup (**BSM**)\\
-> **BTF one shot** = gives trigger signal @ BTF and implements BTF status setup for one shot per second or manual shot\\
\\
__ODOSCOPE setup (**ODO**)__\\
-> **DAFNE** = cutoff the DHPTB101 \\
-> **DAFNE+BTF** = permits DHPTB101 to pulse\\
\\
\\

**__DAFNE+BTF status__**\\
\\
**MANUAL SHOT**\\
**GTS** -> BTF 1 shot\\
**BSM** -> Single shot\\
**ODO** -> DAFNE + BTF\\
Press RUN BTF button and it fires one pulse\\
\\
**One shot per second**\\
**GTS** -> BTF 1 shot\\
**BSM** -> Go Forever and number of impulses = 1\\
**ODO** -> DAFNE + BTF\\
Press RUN BTF button and it fires at 1 Hz (two pulses per second in DAFNE injection)\\
\\
** Maximun shot rate**\\
**GTS** -> BTF\\
**BSM** -> Go forever and number of impluses = 49\\
**ODO** -> DAFNE + BTF\\
\\

==== BTF Signals ====

**Q4 signal || BTF word signal** => Syncro word (~8usec before gun pulse) 
    Cable panel n.11(inside) SlowControl rack's hall in the BTF Control Room -> output from trg board send to 11(inside)-1
\\
**BTFTG1**//(user)// signal => Delayed signal (~8usec as before + 6usec delivering time + user delta time) to match the bunch arrival time in btf hall 
    Cable panel n.11 in BTF Control Room (near BTF Hall concrete wall) -> output from 11-1, delayed by Stanford C && !D, send to 11-3, from 11(inside)-3 send to a cable TG1BTF in BTF Hall
\\ 
**BTFTG2**//(user)// signal => Delayed signal (~8usec as before + 6usec delivering time + user delta time) to match the bunch arrival time in btf hall 
    Cable panel n.11 in BTF Control Room (near BTF Hall concrete wall) -> output from 11-1, delayed by Stanford A && !B, send to 11-2, from 11(inside)-2 send to a cable TG2BTF in BTF Hall
\\
**BTFTG0 A/B**//(btf staff)// signal => output from trg board, delayed by Stanford C && !D, send to a cable TG0BTF in BTF Hall
**BTFTG0 C/D**//(btf staff)// signal => output from trg board, delayed by Stanford C && !D, send to a cable TG0BTF in BTF Hall
\\

==Stanford BTF Setup==
** TRG EXT Setup **\\
THreshold = -0.5V\\
Slope = Negative\\
Trigger Term = 50Ohm\\
\\
** GPIB addr **\\
User = 14\\
\\
\\
\\
A = 15.79 usec\\
B = A + 200 nsec (as gate)\\
C = 15.79 usec\\
D = C + 200 nsec (as gate)\\
\\
**BTFDAQ Timing Unit**\\
DAQ Delay ~200nsec\\
\\


==== Additional Triggers ====

There are additional triggers available for the users:

** BTF &&  LINAC state **\\
it is possible to select an electron/positron only TTL trigger signal (see the purple signal on the scope screen). 
This trigger starts 60 ns after the LINAC trigger.\\
{{:strutture:lnf:da:btf:dispositivi:tempi_btf_stato.png?400|}}

** BTF && Calorimeter **\\
it generates a TTL trigger signal only if there is a LINAC trigger AND a signal in the calorimeter (see the purple signal on the scope screen). This Trigger starts 450 ns after the LINAC trigger.\\
{{:strutture:lnf:da:btf:dispositivi:tempi_btfandcalo.png?400|}}