1. Nanobeacon Calibration in DU2
Avaliable data from DataBase: Calibration Curves
Test in Naples
First analysis
Next Operation
15/01/2016
G. Riccobene

2. Nanobeacon Calibration in DU2
Calibration Curves from DataBase
All nanobeacon curves are in the database but it seems we have 2 populations
DOM 1:6
DOM 7:18
(typ, DOM1)
(typ, DOM 11)
15/01/2016
G. Riccobene

3. Nanobeacon Calibration in DU2
Test in Naples
Voltage set = 7V
DOM # - Rate/10 [kHz] nanobeacon off - Rate/10 [kHz] nanobeacon ON
NO Nanobeacon
(7V) 3800(8V)
See elog entry
15/01/2016
G. Riccobene

4. Nanobeacon Calibration in DU2
Test in Naples (CLB swissknife screenshot)
15/01/2016
G. Riccobene

5. Runs Performed First Runs: aim optimising nanobeacon voltage
(maximum power avoiding PMT saturation and High Rate Veto)
We use JavaGUI tool first to find the optima settings for
The nanobeacon voltage.
A run setup will be defined after these tests
The procedure on how to operate is described on the Operation wiki page

6. Runs Performed

7. Runs Performed http://elog.km3net.de/Operations+IT/2049
The voltage settings were changed to reach a rate on channel 0 of ~13 kHz,
in order not to blind the DOMs.
1649: DOM3, mV = 6600
1651: DOM4, mV = 6000
1653: DOM5, mV=5800
1655: DOM6, mV= 7000
DOM7 mV= 8500
1693 DOM 8 mV= 7100
1695 DOM 9 mV = DOM9 mV= 6800
The other settings were:
pulse period 6251 (10 kHz)
pulse count 9500
pulse duration 1 (change of pulse duration has no effect)
DOMs 1, 2, 10 and 11 skipped

8. Runs Performed
Cumulative DOM rate
DOM 3 and 4
DOM 3 and 4

9. Runs Performed
Cumulative DOM rate
DOM 4 and 5

10. Strategy
Use Channel0 [3,4]of the emittng DOM as reference and measure delay of LED emission (width 16 ns, expected delay wrt PPS ca. 1 ns)
Measure arrival time distribution of photons to downward looking PMTs of upper DOM (modulo 10 kHz)
Increase LED power and check that this delay is constant, then run at higher power