	<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
159	79	453639	13	79	343752	11	73	357839	11	08-JUN-07

Thr_Max in register units for M3R4-159

Thr_Max in register units for M3R4-159

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	73	80	75	81	76	85	81	79	72	81	76	80	75	84	75	84
FEB-2	81	81	77	73	82	81	79	77	83	73	85	79	85	71	72	77
FEB-3	84	76	72	74	70	73	66	78	68	79	70	72	68	79	69	74

Noise rate at Thr_Max [counts/sec] for M3R4-159

Noise rate at Thr_Max [counts/sec] for M3R4-159

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	413117	436066	449827	393466	503089	388022	482257	278663	462375	266859	512224	421529	435366	328284	687534	799540
FEB-2	449879	358261	336154	346382	336319	260816	294279	314810	253669	300776	304526	309061	311534	321581	454848	547130
FEB-3	389230	509671	390906	342246	272356	381606	264944	304490	382089	260277	339576	224578	365449	293060	639000	365940