	<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
164	77	404676	13	73	420223	12	84	420399	12	07-JUN-07

Thr_Max in register units for M3R4-164

Thr_Max in register units for M3R4-164

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	75	74	76	67	87	83	79	71	84	73	72	82	80	80	78	69
FEB-2	67	77	75	79	73	76	75	74	79	69	66	70	70	66	75	79
FEB-3	84	77	86	84	84	92	80	88	80	89	86	79	77	83	86	83

Noise rate at Thr_Max [counts/sec] for M3R4-164

Noise rate at Thr_Max [counts/sec] for M3R4-164

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	466263	571590	486283	456936	343729	300369	250550	472159	281241	306874	322958	336859	393532	450337	410351	624778
FEB-2	448699	482925	367333	487075	374547	425044	309263	405842	318330	361914	402531	299646	234854	442906	616752	745910
FEB-3	503300	518508	355625	400937	338928	403918	264375	376557	285846	572342	310440	368233	410602	445240	533929	637606