	<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
163	74	522828	13	71	509570	14	79	433627	11	05-JUN-07

Thr_Max in register units for M3R4-163

Thr_Max in register units for M3R4-163

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	77	79	73	65	65	81	75	74	70	79	72	77	69	75	73	75
FEB-2	68	77	69	77	66	73	72	68	70	64	74	73	71	75	72	73
FEB-3	69	80	85	85	75	85	75	89	73	90	69	84	68	80	72	81

Noise rate at Thr_Max [counts/sec] for M3R4-163

Noise rate at Thr_Max [counts/sec] for M3R4-163

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	379029	624992	684980	452230	536715	516453	414968	456004	378315	434319	381942	519814	486755	655122	655726	787881
FEB-2	652433	617333	529551	467400	404080	435860	632300	411042	375320	497528	429308	468739	480121	538625	588279	625197
FEB-3	595200	547896	489036	588113	342130	440001	437821	255010	355857	306775	312438	363360	290766	426282	486800	700542