	<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
109	82	422567	12	75	372993	12	81	438620	13	04-JUL-07

Thr_Max in register units for M3R4-109

Thr_Max in register units for M3R4-109

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	82	91	76	84	85	83	84	86	75	85	82	81	77	87
FEB-2	86	72	84	87	70	81	70	82	74	73	66	79	63	70	72	76
FEB-3	85	88	80	80	74	74	85	74	86	81	82	77	86	80	80	86

Noise rate at Thr_Max [counts/sec] for M3R4-109

Noise rate at Thr_Max [counts/sec] for M3R4-109

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	481080	542690	427211	428966	388272	384213	277736	282070	265637	567394	324831	346061	343356	502328	591685	607548
FEB-2	303601	554220	247758	399804	259097	320524	343871	323151	275231	443392	389106	339179	362357	369918	481296	555384
FEB-3	399910	523644	433280	423297	358833	456957	365249	302007	408421	499315	328761	404576	503550	431583	497076	681453