	<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
74	80	427461	13	86	512838	13	82	504956	13	11-MAR-07

Thr_Max in register units for M3R4-74

Thr_Max in register units for M3R4-74

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	77	79	85	79	83	80	82	77	74	86	83	85	84	77	78
FEB-2	86	88	83	89	77	90	78	94	85	101	86	88	76	91	78	83
FEB-3	82	82	69	92	76	86	81	90	79	88	79	84	82	80	76	85

Noise rate at Thr_Max [counts/sec] for M3R4-74

Noise rate at Thr_Max [counts/sec] for M3R4-74

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	333541	485919	552947	322414	352517	350699	446403	367564	360276	353946	613388	350846	339642	443202	542685	623380
FEB-2	440544	692624	445935	470249	362617	565581	397184	501005	380352	540065	344771	540692	453717	633070	614511	822483
FEB-3	430844	482099	559742	514747	452838	388460	423081	474636	402951	389680	543597	512848	636178	537222	694416	635962