	<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
12	81	575947	14	82	477608	12	78	452383	12	27-JUN-07

Thr_Max in register units for M3R4-12

Thr_Max in register units for M3R4-12

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	78	75	79	94	77	81	76	78	76	85	79	82	80	81	86	83
FEB-2	85	78	80	81	82	81	78	87	84	88	77	80	86	87	83	82
FEB-3	80	81	78	78	80	75	81	76	83	78	80	75	82	77	67	79

Noise rate at Thr_Max [counts/sec] for M3R4-12

Noise rate at Thr_Max [counts/sec] for M3R4-12

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	554723	664735	546943	627632	589722	464865	421610	385717	482782	519817	543266	646626	568240	656072	669402	873001
FEB-2	662788	747028	478098	254973	453564	344455	461647	333317	399275	310019	554700	263205	773296	314807	729688	560867
FEB-3	581740	551590	487379	331164	390646	359842	509105	299174	395132	384222	594093	245343	479434	380728	610230	638298