	<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
80	75	494652	14	78	516413	12	81	415933	12	13-MAR-07

Thr_Max in register units for M3R4-80

Thr_Max in register units for M3R4-80

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	70	80	72	73	73	78	76	80	72	75	75	80	66	71	83	77
FEB-2	77	84	71	77	72	81	81	78	86	79	80	71	80	74	77	80
FEB-3	78	80	74	89	82	83	77	84	75	81	84	79	79	88	79	77

Noise rate at Thr_Max [counts/sec] for M3R4-80

Noise rate at Thr_Max [counts/sec] for M3R4-80

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	420086	607160	382646	673865	284423	723919	525929	402988	291963	555494	321837	515438	352321	677190	445468	733700
FEB-2	443460	726066	467963	492598	338451	394097	592697	635371	684227	412126	546923	312422	467715	551736	492169	704586
FEB-3	589430	513494	344482	346892	314352	330460	285134	429388	284859	613403	339933	387244	381799	401787	498153	594121