	<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
197	84	626847	15	78	564091	14	85	489571	13	24-JAN-07		Sens=7.5mV/fc Th=15fc

Thr_Max in register units for M3R4-197

Thr_Max in register units for M3R4-197

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	79	86	83	80	86	86	85	79	88	78	90	86	80	86	100	76
FEB-2	81	77	76	82	69	82	79	78	77	74	82	74	81	71	80	78
FEB-3	77	94	82	88	75	92	80	93	82	89	80	89	86	82	86	87

Noise rate at Thr_Max [counts/sec] for M3R4-197

Noise rate at Thr_Max [counts/sec] for M3R4-197

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	574668	610649	521648	691946	816609	680682	426818	560334	500708	531100	748101	548169	682779	595610	771253	768473
FEB-2	572835	595255	536801	605863	419335	415419	900114	509524	575738	344944	599958	406552	585241	581169	774342	602359
FEB-3	546325	579111	432259	391766	392928	423468	444337	274593	699655	276217	503089	375054	500756	492057	801918	699607