	<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
16	80	469648	12	78	492720	12	84	512418	13	27-JUN-07

Thr_Max in register units for M3R4-16

Thr_Max in register units for M3R4-16

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	80	78	80	82	82	81	76	80	77	89	76	90	69	83	88
FEB-2	76	80	79	82	68	82	76	83	74	72	77	90	66	84	76	79
FEB-3	81	89	84	80	81	87	84	87	81	84	87	79	83	85	83	91

Noise rate at Thr_Max [counts/sec] for M3R4-16

Noise rate at Thr_Max [counts/sec] for M3R4-16

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	568961	548497	512799	424967	326966	600879	428622	310185	432936	502585	283542	505527	374450	493731	470493	729221
FEB-2	557689	482183	518421	721839	343459	299248	395595	347379	352239	463899	453696	490920	655239	507994	557891	735835
FEB-3	470460	695568	451229	391239	471016	476470	569820	441859	416608	473552	502272	455768	485905	594171	503752	799003