	<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
168	75	581351	14	82	512620	13	79	565406	14	07-JUN-07

Thr_Max in register units for M3R4-168

Thr_Max in register units for M3R4-168

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	72	76	72	75	81	77	75	75	78	71	73	78	75	70	74	83
FEB-2	79	87	83	79	89	74	80	86	83	86	80	79	79	79	84	84
FEB-3	83	80	77	70	82	75	84	74	93	70	78	81	79	82	82	79

Noise rate at Thr_Max [counts/sec] for M3R4-168

Noise rate at Thr_Max [counts/sec] for M3R4-168

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	725110	662804	491698	681144	476937	477938	466580	485702	448283	557892	474101	539186	558171	696025	699675	860362
FEB-2	490492	535053	552740	488994	463831	433698	480491	341896	490850	644021	416304	389423	535347	628115	561909	748748
FEB-3	506371	715455	501220	945818	421594	705434	361743	465341	446527	538200	374876	771960	354551	476800	648104	812503