	<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
99	80	577863	12	81	448896	12	82	516646	13	11-JUL-07

Thr_Max in register units for M3R4-99

Thr_Max in register units for M3R4-99

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	74	84	73	79	80	79	80	77	82	77	86	81	84	81	88	82
FEB-2	81	82	72	82	83	85	78	85	79	79	84	80	83	76	85	78
FEB-3	84	84	86	80	82	84	87	77	92	78	77	85	80	78	79	79

Noise rate at Thr_Max [counts/sec] for M3R4-99

Noise rate at Thr_Max [counts/sec] for M3R4-99

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	483656	715753	584497	573493	407800	611088	591814	450388	570854	631794	522642	385685	550797	714882	622360	828305
FEB-2	732331	454829	565241	343856	692870	320082	394016	270496	384768	269112	435659	316514	460596	402566	507419	631988
FEB-3	474124	533271	473529	543475	722122	554898	472058	417302	374114	414137	570338	343919	476406	583650	671654	641333