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F-ESR-ARC.06

Requirement details, history, relationships and interfaces associated with requirement F-ESR-ARC.06

CURRENT RECORD

Record Date: 02/24/2025 18:26
Identifier:	F-ESR-ARC.06	WBS:	6.04
Date Modified:		TBD:	FALSE
Status Date:		Status:	Approved
Description:	The polarity of the ESR center bending magnet shall be capable of being wired in reverse to control the beam emittance and to damp the beam. The polarity will be dictated by the beam energy.
Comments:

ARCHIVE RECORDS

Record Date: 01/27/2025 16:43
Identifier:	F-ESR-ARC.6	WBS:	6.04
Date Modified:		TBD:	FALSE
Status Date:		Status:	Reviewed
Description:	The polarity of the center bending magnet shall be capable of being wired in reverse to control the beam emittance and to damp the beam. The polarity will be dictated by the beam energy.
Comments:

RELATIONSHIPS

Parents
G-ESR.03	The ESR shall provide electron bunches having the bunch parameters specified in the MPT. [Document#:EIC-SEG-RSI-005]
Children
P-ESR-MAG-D13.01.01	The magnet shall be a single function dipole with a vertical field direction.
P-ESR-MAG-D13.01.02	The magnet shall be equipped with trim coils which are capable of trimming the field within +/-3.5 (%) of the Peak main bus field. (See figure P-ESR-MSG-D13.01.02-1)
P-ESR-MAG-D13.01.03	To operate at a fixed bus current for 5GeV,10GeV and 18GeV the magnet shall be designed to accommodate turns. (See figure P-ESR-MSG-D13.01.03-1)
P-ESR-MAG-D13.01.06	The physical magnet length shall be <2.73 (m).
P-ESR-MAG-D13.01.10	The magnet pole gap height and width shall be H=52 (mm), W=140(mm)
P-ESR-MAG-D13.01.11.02	Magnet installation tolerances, the magnet install center and install alignment must be within a translational value of +/-150(um) and a rotational alignment value of +/-0.5(mrad).
P-ESR-MAG-D13.02.01	The magnet shall be able to deliver an absolute nominal integrated dipole field ranging from Bmin=0(T.m) to Bmax=0.79(T.m) (See figure P-ESR-MSG-D13.02.01-1)
P-ESR-MAG-D13.02.06	The magnet-to-magnet variability shall be < 0.1%.
P-ESR-MAG-D13.02.07	Magnetic field position and alignment within the magnet, the magnetic field, center and alignment, within the magnet must be known to within a translational value of +/-50 (um) and a rotational alignment value of +/-0.5(mrad).
P-ESR-MAG-D13.03.01	The field shall be measured at 4 locations (see figure P-ESR-MSG-D13.03.01-1) as follows Harmonic Measurements region 1; Rref1=13mm centered at (-14,0) mm, Harmonic Measurements region 2; Rref2=13mm centered at (0,0) mm, Harmonic Measurements region 3; Rref3=13mm centered at (14,0), Relative field Measurements region 4; Relative to the central field at B(0,0), sampled in an Annulus 25mm>dRvol3>31mm
P-ESR-MAG-D13.03.02	The reference field for the different design energies shall be Measurement 1; Bref1=0.07 (T) at R1 Measurement 2; Bref2=0.13 (T) at R2 Measurement 3; Bref3=0.284 (T) at R2 Measurement 4; Bref4=0.284(T) at R=0
P-ESR-MAG-D13.03.03	The magnet bore field shall have a field homogeneity in region 4, of better than dB/B<10-3 with respect to the central field at R(0,0) and shall meet the following harmonic multipole content in regions 1, 2 and 3. (Note: The following calculated multipoles values are given for reference radius of 17mm and centered on axis at x=0, y=0. *The multipole values need to be scaled accordingly in regions 1 and 3 with appropriate off axis values.)
P-ESR-MAG-D13.03.03.01	Region 1: b1 = 10000, Region 2: b1 = 10000, Region 3: b1 = 10000,
P-ESR-MAG-D13.03.03.02	Region1: -4<b2<4, Region2: -4<b2<4, Region3: -4<b2<4
P-ESR-MAG-D13.03.03.03	Region 1: -0.5<b3<0.6, Region 2: -0.5<b3<0.6, Region 3: -0.5<b3<0.6,
P-ESR-MAG-D13.03.03.04	Region 1: -1<b4< 0.5, Region 2: -1<b4< 0.5, Region 3: -1<b4< 0.5
P-ESR-MAG-D13.03.03.05	Region 1: -0.5<b5 <0.5, Region 2: -0.5<b5 <0.5, Region 3: -0.5<b5 <0.5
P-ESR-MAG-D13.03.03.06	Region 1: -0.5<b6 <0.5, Region 2: -0.5<b6 <0.5, Region 3: -0.5<b6 <0.5
P-ESR-MAG-D13.03.03.07	Region 1: -0.5<b7 <0.5, Region 2: -0.5<b7 <0.5, Region 3: -0.5<b7 <0.5
P-ESR-MAG-D13.03.03.08	Region 1: -0.5<b8 <0.5, Region 2: -0.5<b8 <0.5, Region 3: -0.5<b8 <0.5
P-ESR-MAG-D13.03.03.09	Region 1: -0.5<b9 <0.5, Region 2: -0.5<b9 <0.5, Region 3: -0.5<b9 <0.5
P-ESR-MAG-D13.03.03.10	Region 1: -0.5<b10 <0.5, Region 2: -0.5<b10 <0.5, Region 3: -0.5<b10 <0.5
P-ESR-MAG-D13.03.03.11	Region 1: -0.5<b11 <0.5, Region 2: -0.5<b11 <0.5, Region 3: -0.5<b11 <0.5
P-ESR-MAG-D13.03.03.12	Region 1: -0.5<b12 <0.5, Region 2: -0.5<b12 <0.5, Region 3: -0.5<b12 <0.5
P-ESR-MAG-D13.03.03.13	Region 1: -0.5<b13 <0.5, Region 2: -0.5<b13 <0.5, Region 3: -0.5<b13 <0.5
P-ESR-MAG-D13.03.03.14	Region 1: -0.5<b14 <0.5, Region 2: -0.5<b14 <0.5, Region 3: -0.5<b14 <0.5
P-ESR-MAG-D13.03.03.15	Region 1: -0.5<b15 <0.5, Region2: -0.5<b15 <0.5, Region 3: -0.5<b15 <0.5
P-ESR-MAG-D13.03.03.16	Region 1: -0.5<b16 <0.5, Region2: -0.5<b16 <0.5, Region 3: -0.5<b16 <0.5
P-ESR-MAG-D13.04	The magnet shall not be designed to limit CrossTalk requirements.
P-ESR-MAG-D13.05	The magnet fringe field shall not exceed 10 Gauss at a radial distance greater than 900mm from the magnet centerline
P-ESR-MAG-D13.09	The magnet design and verification process shall ensure the final magnet will meet the reliability needs of the EIC over it planned operational life of >20 Years.
P-ESR-MAG-D13.10	The magnet shall be designed to operate reliably given the cumulative radiation dose it will experience over the lifetime of the EIC >20 Years.
P-ESR-MAG-D2.01	The magnet shall be a single function dipole with a vertical field direction.
P-ESR-MAG-D2.01.02	The magnet shall be equipped with trim coils which are capable of trimming the field within +/- 2.8(%) of the Peak main bus field. (See figure P-ESR-MSG-D2.01.02-1)
P-ESR-MAG-D2.01.03	To operate at a fixed bus current for 5GeV,10GeV and 18GeV the magnet shall be designed to accommodate turns. (See figure P-ESR-MSG-D2.01.03-1)
P-ESR-MAG-D2.01.06	The physical magnet length shall be <1.13 (m).
P-ESR-MAG-D2.01.10	The magnet pole gap height and width shall be H=52 (mm), W=140(mm).
P-ESR-MAG-D2.09	The magnet design and verification process shall ensure the final magnet will meet the reliability needs of the EIC over it planned operational life of >20 Years.
P-ESR-MAG-D2.01.11.02	Magnet installation tolerances, the magnet install center and install alignment must be within a translational value of +/-150(um) and a rotational alignment value of +/-0.5(mrad).
P-ESR-MAG-D2.02.01	The magnet shall be able to deliver an absolute nominal integrated dipole field ranging from Bmin=0(T.m) to Bmax=0.33(T.m). (See figure P-ESR-MSG-D2.02.01-1)
P-ESR-MAG-D2.02.04	The magnet good field aperture dAx required shall be 35.0345 mm.
P-ESR-MAG-D2.02.06	The magnet-to-magnet variability shall be < 0.1%.
P-ESR-MAG-D2.02.07	Magnetic field position and alignment within the magnet, the magnetic field, center and alignment, within the magnet must be known to within a translational value of +/-50 (um) and a rotational alignment value of +/-0.5(mrad).
P-ESR-MAG-D2.03.01	The field shall be measured at 4 locations (See figure P-ESR-MSG-D2.03.01-1) as follows Harmonic Measurements region 1; Rref1=13mm centered at (-14,0) mm, Harmonic Measurements region 2; Rref2=13mm centered at (0,0) mm, Harmonic Measurements region 3; Rref3=13mm centered at (14,0), Relative field Measurements region 4; Relative to the central field at B(0,0), sampled in an Annulus 25mm>dRvol3>31mm
P-ESR-MAG-D2.03.02	The reference field for the different measurements shall be Measurement 1; Bref1=-0.375 (T) in Region1, Region2 and Region3 Measurement 2; Bref2=0.12 (T) in Region1, Region2 and Region3 Measurement 3; Bref2=0.23 (T) in Region1, Region2 and Region3 Measurement 3; Bref3=0.23 (T) in Region4
P-ESR-MAG-D2.03.03	The magnet bore field shall have a field homogeneity in region 4, of better than dB/B<10-3 with respect to the central field at R(0,0) and shall meet the following harmonic multipole content in regions 1, 2 and 3. (Note: The following calculated multipoles values are given for reference radius of 17mm and centered on axis at x=0, y=0. *The multipole values need to be scaled accordingly in regions 1 and 3 with appropriate off axis values.)
P-ESR-MAG-D2.03.03.01	Region1: b1 = 10000, Region2: b1 = 10000, Region3: b1 = 10000
P-ESR-MAG-D2.03.03.02	Region 1: -6<b2<6, Region 2: -6<b2<6, Region 3: -6<b2<6
P-ESR-MAG-D2.03.03.03	Region1: -0.5<b3<0.6, Region2: -0.5<b3<0.6, Region3: -0.5<b3<0.6
P-ESR-MAG-D2.03.03.04	Region1: -1<b4< 0.5, Region2: -1<b4< 0.5, Region 3: -1<b4< 0.5
P-ESR-MAG-D2.03.03.05	Region 1: -0.5<b5 <0.5, Region 2: -0.5<b5 <0.5, Region 3: -0.5<b5 <0.5
P-ESR-MAG-D2.03.03.06	Region 1: -0.5<b6 <0.5, Region 2: -0.5<b6 <0.5, Region 3: -0.5<b6 <0.5
P-ESR-MAG-D2.03.03.07	Region 1: -0.5<b7 <0.5, Region 2: -0.5<b7 <0.5, Region 3: -0.5<b7 <0.5
P-ESR-MAG-D2.03.03.08	Region 1: -0.5<b8 <0.5, Region 2: -0.5<b8 <0.5, Region 3: -0.5<b8 <0.5
P-ESR-MAG-D2.03.03.09	Region 1: -0.5<b9 <0.5, Region 2: -0.5<b9 <0.5, Region 3: -0.5<b9 <0.5
P-ESR-MAG-D2.03.03.10	Region 1: -0.5<b10 <0.5, Region 2: -0.5<b10 <0.5, Region 3: -0.5<b10 <0.5
P-ESR-MAG-D2.03.03.11	Region 1: -0.5<b11 <0.5, Region 2: -0.5<b11 <0.5, Region 3: -0.5<b11 <0.5
P-ESR-MAG-D2.03.03.12	Region 1: -0.5<b12 <0.5, Region 2: -0.5<b12 <0.5, Region 3: -0.5<b12 <0.5
P-ESR-MAG-D2.03.03.13	Region 1: -0.5<b13 <0.5, Region 2: -0.5<b13 <0.5, Region 3: -0.5<b13 <0.5
P-ESR-MAG-D2.03.03.14	Region 1: -0.5<b14 <0.5, Region 2: -0.5<b14 <0.5, Region 3: -0.5<b14 <0.5
P-ESR-MAG-D2.03.03.15	Region 1: -0.5<b15 <0.5, Region 2: -0.5<b15 <0.5, Region 3: -0.5<b15 <0.5
P-ESR-MAG-D2.03.03.16	Region 1: -0.5<b16 <0.5, Region 2: -0.5<b16 <0.5, Region 3: -0.5<b16 <0.5
P-ESR-MAG-D2.04	The magnet shall not be designed to limit CrossTalk requirements.
P-ESR-MAG-D2.05	The magnet fringe field shall not exceed 10 Gauss at a radial distance greater than 900mm from the magnet centerline
P-ESR-MAG-D2.10	The magnet shall be designed to operate reliably given the cumulative radiation dose it will experience over the lifetime of the EIC of >20 Years.

INTERFACES

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