	<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
38	79	459012	12	75	440764	12	80	326521	10	22-JUN-07

Thr_Max in register units for M3R4-38

Thr_Max in register units for M3R4-38

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	75	83	79	75	74	80	81	82	72	85	76	83	72	86	77	84
FEB-2	78	84	77	81	66	80	69	76	74	78	74	74	72	74	76	70
FEB-3	84	79	89	81	81	78	81	77	86	70	79	77	85	74	78	76

Noise rate at Thr_Max [counts/sec] for M3R4-38

Noise rate at Thr_Max [counts/sec] for M3R4-38

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	383657	557801	450726	410941	365758	675546	410892	492839	308959	349363	391990	445789	367080	407598	569867	755380
FEB-2	510500	550963	402060	520099	298863	393648	342518	307662	387265	452009	549792	345020	417158	552041	532264	490362
FEB-3	268737	490323	325450	306875	262841	456395	182583	327027	208344	423389	296462	253803	250724	314536	391242	465598