	<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
179	80	398320	12	74	421530	11	80	409044	12	13-JUN-07

Thr_Max in register units for M3R4-179

Thr_Max in register units for M3R4-179

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	83	84	90	75	85	78	85	77	83	74	79	75	84	76	69	84
FEB-2	81	76	76	66	74	69	75	64	78	67	81	74	88	71	81	70
FEB-3	82	78	79	84	79	79	79	85	73	82	78	84	79	75	84	77

Noise rate at Thr_Max [counts/sec] for M3R4-179

Noise rate at Thr_Max [counts/sec] for M3R4-179

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	358998	356957	377900	395544	635387	396152	347217	266380	331819	286526	400719	418367	496522	398604	404909	501111
FEB-2	554396	468769	559861	408862	350459	279428	406283	251605	309690	219674	518649	307798	366697	368522	452243	921542
FEB-3	339268	569653	336338	358508	331987	417927	432171	289085	523984	279135	278432	279740	328115	799761	422810	557789