HRS Optics Run

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1. Multifoil target:
   1. one DIS run without sieve for y-target calibration
   2. sieve on, take a long DIS run for theta, phi calibration
2. Hydrogen target: elastic peak check (move RHRS to a larger angle), and delta scan at +-2%, +-4% of elastic peak

Optics Study Page (Back to Tritium-Main) Back to Commissioning Page

Run Info

LHRS optics runs

Step L1: Procedure with Sieve-slit

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	Multi-foil carbon	Yes	Off
	15cm LH2	Yes	2 x 2 mm2
	Multi-foil carbon	Yes	Off

Step L2: Delta Scan with Proton Elastic (with sieve slit)

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=-4%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=-2%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=0%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=+2%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=+4%;

Step L3: Dummy Target Runs (with sieve slit)

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	15cm dummy	Yes	2 x 2 mm2				+4% delta scan setting

Step L4: Proton Elastic Kinematics

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	Single-foil carbon	No	Off
	15cm dummy	No	2 x 2 mm2
	15cm LH2	No	2 x 2 mm2

RHRS optics runs

Step R1: Procedure with Sieve-slit

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	Multi-foil carbon	Yes	Off
	15cm LH2	Yes	2 x 2 mm2
	Multi-foil carbon	Yes	Off

Step R2: Delta Scan with Proton Elastic (with sieve slit)

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=-4%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=-2%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=0%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=+2%;
	15cm LH2	Yes	2 x 2 mm2				Delta scan ΔP=+4%;

Step R3: Dummy Target Runs (with sieve slit)

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	15cm dummy	Yes	2 x 2 mm2				+4% delta scan setting

Step R4: Proton Elastic Kinematics

Run number	Target	Sieve	Raster	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	Single-foil carbon	No	Off
	15cm dummy	No	2 x 2 mm2
	15cm LH2	No	2 x 2 mm2