	<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
171	77	481312	12	82	451263	12	81	397780	11	19-JUN-07

Thr_Max in register units for M3R4-171

Thr_Max in register units for M3R4-171

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	76	79	82	80	74	82	79	76	81	74	75	76	74	69	76	75
FEB-2	79	85	87	79	83	84	86	73	84	82	88	77	87	79	78	79
FEB-3	77	79	81	82	88	75	95	80	86	79	87	75	84	77	85	73

Noise rate at Thr_Max [counts/sec] for M3R4-171

Noise rate at Thr_Max [counts/sec] for M3R4-171

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	521889	533076	348640	441906	363529	337537	340757	439723	662926	319648	628286	424690	444223	544189	634033	715942
FEB-2	431698	525151	401988	275388	403731	291090	636619	327884	379241	241456	545450	280959	447286	364052	685229	982982
FEB-3	361138	465608	451013	367352	560733	341277	265930	296514	238562	289092	487401	450034	458617	375900	381732	573579