	<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
67	81	446127	12	73	505991	13	76	427785	12	03-JUL-07

Thr_Max in register units for M3R4-67

Thr_Max in register units for M3R4-67

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	78	79	85	75	89	83	82	76	85	75	85	75	88	76	89
FEB-2	71	72	71	76	70	76	71	76	72	73	69	75	75	75	80	66
FEB-3	67	75	69	79	75	77	70	82	77	78	77	79	72	82	77	78

Noise rate at Thr_Max [counts/sec] for M3R4-67

Noise rate at Thr_Max [counts/sec] for M3R4-67

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	427836	557857	376682	430232	523570	362374	425541	258912	443018	355481	346406	750841	348478	510210	397831	622757
FEB-2	640769	539401	420380	604628	378875	444426	498842	527245	490719	382041	434397	334414	493598	535715	612294	758106
FEB-3	606525	506923	378906	451769	261423	503914	299160	384923	212392	356835	493244	360529	355067	567388	461908	643655