	<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
79	78	441636	13	73	436623	12	79	505694	12	13-MAR-07

Thr_Max in register units for M3R4-79

Thr_Max in register units for M3R4-79

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	70	79	82	72	75	77	79	76	78	78	80	76	81	76	92	74
FEB-2	69	75	76	81	77	74	67	70	65	74	68	67	76	78	85	73
FEB-3	74	84	77	84	82	81	82	80	79	86	73	79	76	76	81	76

Noise rate at Thr_Max [counts/sec] for M3R4-79

Noise rate at Thr_Max [counts/sec] for M3R4-79

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	410724	652294	385606	466531	312362	406079	389128	326198	383396	437784	398195	363402	333681	584069	595543	621188
FEB-2	449500	486398	499005	322708	544839	350014	372817	515729	531089	310687	360183	465219	408184	273955	556070	539573
FEB-3	598415	580860	691274	604796	909621	444501	489197	308705	453173	350906	339732	327813	475807	421966	574002	520342