	<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
63	85	529145	14	80	502324	12	80	481294	13	15-JUN-07

Thr_Max in register units for M3R4-63

Thr_Max in register units for M3R4-63

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	82	91	87	81	96	89	88	81	88	82	88	79	77	86	81	83
FEB-2	76	87	76	73	80	75	79	83	75	83	73	86	80	90	82	81
FEB-3	76	92	78	83	78	85	73	76	77	70	80	82	83	77	80	82

Noise rate at Thr_Max [counts/sec] for M3R4-63

Noise rate at Thr_Max [counts/sec] for M3R4-63

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	591051	467266	478418	433967	518755	401876	485420	302892	723518	379749	653390	577795	458428	519031	721625	753144
FEB-2	665002	510300	579888	578172	431498	462889	326439	394969	448796	627946	468960	302615	483194	444647	677647	634223
FEB-3	397725	631724	324965	504617	510462	413202	402609	392501	427973	550607	453928	418746	432373	596300	585848	657122