	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
64	80	449789	12	82	449359	12	76	413548	12	15-JUN-07

Thr_Max in register units for M3R4-64

Thr_Max in register units for M3R4-64

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	81	82	77	80	77	84	79	81	77	85	76	80	82	82	80	79
FEB-2	81	79	68	82	85	88	76	85	80	88	83	87	83	88	79	86
FEB-3	76	74	78	73	70	74	65	85	74	78	70	81	81	84	72	87

Noise rate at Thr_Max [counts/sec] for M3R4-64

Noise rate at Thr_Max [counts/sec] for M3R4-64

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	395913	698483	395550	563794	265927	564485	290535	439763	277011	385725	286558	381836	440951	598816	565360	645914
FEB-2	456865	516786	360187	517417	317093	528273	313887	532784	230427	546296	338541	344174	403526	574414	506282	702797
FEB-3	433538	538464	421430	356687	344936	465396	337272	367828	354700	360536	311612	357941	441228	387625	490860	646714